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Dodge Colt GT 1990 - 1990-91 ENGINE PERFORMANCE Self-Diagnostics - 1.5L, 1.6L, 1.8L, 2.0L (Except Laser & Talon)
Dodge Colt GT 1990 - INTRODUCTION
If no faults were found while performing BASIC TESTING , proceed with self-diagnostics. If no fault codes or only pass codes are present after entering self-diagnostics, proceed to TESTS W/O CODES article for diagnosis by symptom (i.e. ROUGH IDLE, NO START, etc.).
Dodge Colt GT 1990 - SELF-DIAGNOSTIC SYSTEM
Use Chrysler Motors code charts when using Chrysler's Diagnostic Readout Box (DRB-II). If DRB-II is not available or if working on a Mitsubishi Motors vehicle, system diagnosis can only be accomplished using a voltmeter or appropriate scan tester. To diagnose Chrysler Motors and Mitsubishi models using a voltmeter, see ENTERING ON-BOARD DIAGNOSTICS (USING VOLTMETER) in this article.
Dodge Colt GT 1990 - SYSTEM DIAGNOSIS SYSTEM DIAGNOSIS DESCRIPTION
NOTE: Chrysler Motors recommends using DRB-II to diagnose system. Voltmeter usage has limited diagnostic capabilities but can be used if DRB-II is not available or if working on a Mitsubishi Motors vehicle.
The Engine Control Unit (ECU) monitors several different engine control system circuits. If an abnormal input signal occurs, a fault code is stored in ECU memory and given a fault code number. Each circuit has its own fault number and message. A specific fault code indicates a particular system failure, but it DOES NOT indicate that cause of failure is necessarily within system. A fault code DOES NOT condemn any specific component; it simply points out a probable malfunctioning area. If a critical fault code is set, the ECU will turn on CHECK ENGINE light. All fault codes except speed sensor are considered critical.
Fault codes can be confirmed by using a voltmeter on Chrysler Motors and Mitsubishi models or Chrysler's Diagnostic Readout Box (DRB-II) on Chrysler Motors vehicles. See ENTERING ON-BOARD DIAGNOSTICS (USING VOLTMETER) or ENTERING ON-BOARD DIAGNOSTICS (USING DRB-II) . By using the DRB-II, the self-diagnostic capabilities of this system can simplify testing and reduce diagnostic time.
System malfunctions encountered are identified as either hard failures or intermittent failures as determined by the ECU.
Dodge Colt GT 1990 - HARD FAILURES
Hard failures cause CHECK ENGINE light to illuminate and remain on until the malfunction is repaired. If light comes on and remains on (light may flash) during vehicle operation, cause of malfunction must be determined by using DIAGNOSTIC FAULT CHARTS (if testing with voltmeter) or diagnostic CODE CHARTS (if testing with DRB-II). If a sensor fails, ECU will use a substitute value in its calculations to continue engine operation. In this condition, vehicle is functional, but loss of good driveability may result.
Dodge Colt GT 1990 - INTERMITTENT FAILURES
Intermittent failures may cause CHECK ENGINE light to flicker or illuminate and go out after the intermittent fault goes away. However, the corresponding trouble code will be retained in ECU memory. If related fault does not reoccur within a certain time frame, related trouble code will be erased from ECU memory. Intermittent failures may be caused by a sensor, connector or wiring related problems. See INTERMITTENTS in TESTS W/O CODES article.
Dodge Colt GT 1990 - PRETEST INSPECTION
Before proceeding with diagnosis, the following precautions must be followed:
- Vehicle must have a fully charged battery and functional charging system.
- Visually inspect connectors and circuit wiring being worked on.
- DO NOT disconnect battery or ECU. This will erase any fault codes stored in ECU.
- DO NOT cause short circuits when performing electrical tests.
This will set additional fault codes, making diagnosis of original problem more difficult.
- DO NOT use a test light in place of a voltmeter.
- When checking for spark, ensure coil wire is NO more than 1/4" from ground. If coil wire is more than 1/4" from ground, damage to vehicle electronics and/or ECU may result.
- DO NOT prolong testing of fuel injectors. Engine may hydrostatically (liquid) lock.
- When a vehicle has multiple fault codes, always repair lowest number fault code first.
- If DRB-II is being used to diagnose system, always perform verification test after repairs are made.
Dodge Colt GT 1990 - ENTERING ON-BOARD DIAGNOSTICS (USING VOLTMETER)
- Before entering on-board diagnostics, refer to PRETEST INSPECTION in this article. Turn ignition switch to OFF position. Locate self-diagnostic connector. See SELF-DIAGNOSTIC TEST CONNECTOR LOCATION table. Using an analog voltmeter, connect voltmeter positive lead to self-diagnostic connector terminal No. 1 and negative lead to terminal No. 12 (ground). See Fig. 6 .
- Turn ignition switch to ON position and disclosure of ECU memory will begin. If 2 or more systems are non-functional, they are indicated by order of increasing code number. Indication is made by 12-volt pulses of voltmeter pointer. A constant repetition of short 12-volt pulses indicates system is normal. If system is abnormal, voltmeter will pulse between zero and 12 volts.
- Signals will appear on voltmeter as long and short 12-volt pulses. Long pulses represent tens; short pulses represent ones. For example 4 long pulses and 3 short pulses indicates Code 43. See Fig. 1 and Fig. 2 . After recording abnormal code(s), perform necessary repair.
- After repair, turn ignition off and disconnect negative battery cable for 10 seconds to erase ECU memory. Reconnect power supply and repeat self-diagnostics to confirm repair.
Dodge Colt GT 1990 SELF-DIAGNOSTIC TEST CONNECTOR LOCATION
Application Location Colt, Colt 200, Colt Wagon & Summit 1.5L Next to fuse block 1.6L Right kick panel Colt Wagon & Colt Vista 1.8L & 2.0L SOHC Next to fuse block Eclipse Next to fuse block Galant Left kick panel Mirage Left kick panel Montero Inside top of glove box Precis Left kick panel 
Fig. 1: Dodge Colt GT 1990 - Component Locations - Diagnostic Fault Chart (1 of 2)
Fig. 2: Dodge Colt GT 1990 - Component Locations - Diagnostic Fault Chart (2 of 2)
Dodge Colt GT 1990 - DIAGNOSTIC PROCEDURE (USING DRB-II) DRB-II PROCEDURE
NOTE: When using diagnostic code charts, DO NOT skip any steps in chart or incorrect diagnosis may result. Always check related Technical Service Bulletins (TSB's).
- ENTERING ON-BOARD DIAGNOSTICS (USING DRB-II) to retrieve fault codes. If fault codes are NOT present and/or DRB-II is used, proceed to one of the following tests:
- Go to NO START TEST 1 (NS-1) chart if a no-start condition exists or engine stalls after start-up. Perform indicated VERIFICATION PROCEDURE chart after repairs. Ensure charts apply to engine being tested.
- Go to DRIVEABILITY TEST 1 (DR-1) chart if engine runs but has performance problems. Perform indicated VERIFICATION PROCEDURE chart after repairs. Ensure charts apply to engine being tested.
Dodge Colt GT 1990 - DRB-II KEY FUNCTIONS
- YES or Down Arrow & NO or Up Arrow
Keys will move lines on screen up or down allowing you to choose an item or scroll through all selections available. - F1 & F2 Keys
Keys are used to scroll through sensor displays. - ATM Key
Key will return you to previous screen. - ENTER Key
Allows you to select a test or display. The flashing arrow must be on the display you wish to select. Pressing ENTER in the sensor state will cause display to change from a 3-line display to a 1-line display. - F3 Key
Key is used to display a help screen. This key may be used at any time. - Number Keys
Keys are used for choosing a display or test by the number for the test or display. - READ/HOLD Key
Key is used to freeze any sensor display. - MODE & ATM Key
Pressing MODE and ATM key at the same time will cause DRB-II to reset to copyright screen.
Dodge Colt GT 1990 - ENTERING ON-BOARD DIAGNOSTICS (USING DRB-II)
- Before entering on-board diagnostics, refer to PRETEST INSPECTION . Turn ignition off. Locate self-diagnostic connector. See SELF-DIAGNOSTIC TEST CONNECTOR LOCATION table in this article. Using appropriate Mitsubishi cartridge and adapter, connect DRB-II to diagnostic connector.
- Ensure all accessories are off. Turn ignition on. All character positions will illuminate and copyright information will appear on screen for a few seconds.
- If DRB-II screen displays an error message, refer to DRB-II ERROR SCREENS in this article. The DRB-II will offer 4 menus: VEHICLES TESTED, HOW TO USE, CONFIGURE and SELECT VEHICLE.
Dodge Colt GT 1990 - VEHICLES TESTED
Press "1" key or ENTER key when VEHICLES TESTED appears on DRB-II. DRB-II shows models covered by cartridge. Screen will display for 5 seconds and return to DRB-II menu. To return to DRB-II menu sooner, press ATM key.
Dodge Colt GT 1990 - HOW TO USE
Press "2" key or press down arrow to display HOW TO USE option and press ENTER. Press and hold F3 key. DRB-II displays instructions for cartridge usage. To return to DRB-II menu, press ATM key.
Dodge Colt GT 1990 - CONFIGURE
Press "3" key or press down arrow to display CONFIGURE option and press ENTER. Configure allows user to customize DRB-II display. For example, If metric system is more useful, select METRIC from the menu. All selections in CONFIGURE option remain active until user changes selection.
Dodge Colt GT 1990 - SELECT VEHICLE
- This allows the user to enter information about vehicle being tested. Usually, this option has more than one display screen. Use ENTER key to enter vehicle information.
- When all information about vehicle is entered, DRB-II will display an information summary the technician has entered. DRB-II will show an additional option marked CONFIRM. If information is correct, press CONFIRM. DRB-II will display MAIN MENU.
Dodge Colt GT 1990 - MAIN MENU
The MAIN MENU represents all diagnostic functions available. Functions are SYSTEM TESTS, READ FAULTS, STATE DISPLAYS, ACTUATOR TESTS and ADJUSTMENTS. SYSTEM TESTS is NOT available.
Dodge Colt GT 1990 - READ FAULTS
This allows technician to read fault codes stored in ECU memory.
Dodge Colt GT 1990 - STATE DISPLAYS
- This allows technician to view conditions at signal level. The 2 types of signals are analog and digital. Analog signals are monitored at pins corresponding to vehicle harness splices (e.g. fuel pump relay).
- Digital signals correspond to data transmitted by the system controllers. Both signals are displayed in common units (e.g. temperature). Use up and down arrow keys on DRB-II to scroll through displays available.
- The following ENGINE state displays are available on DRB-II:
- Module Information
This mode allows technician to read ECU part number and application. - Engine Sensors
This mode allows technician to look at various engine sensors during engine operation. - Inputs/Outputs
This mode allows technician to read input and output states of various switches and sensors. - Custom Display
This screen allows technician to set up his/her own custom display. Two custom display screens can be programmed into DRB-II. - Minimum/Current/Maximum
The MIN/CURRENT/MAX display shows a history of conditions for a specific sensor. When this option is selected, maximum, current (static) and minimum values can be displayed for a specific sensor. To reset sensors to a zero value, simply press ENTER key. This display may be used to isolate intermittent faults. The MIN/CURRENT/MAX display allows technician to observe operation of 6 different sensor values. Information is displayed as a 3-digit number. The first value displayed is the minimum reading, the second number is the current reading and third valve is the maximum reading. Typically sensors range between 2-252. Values less than 2 or greater than 252 will usually indicate that a sensor is shorted or disconnected. Watch minimum and maximum values to help diagnose intermittent problems. - Monitors
This screen shows technician sensors and system controllers which affect fuel control, spark advance, RPM and A/C relay. There are 4 different screens available. As an example, screen No. 1 will show: airflow sensor, O2 sensor, battery and fuel injector. All of these inputs affect fuel control.
- Module Information
Dodge Colt GT 1990 - Actuator Tests
This mode allows technician to actuate injectors, fuel pump, purge control, EGR solenoid, fuel pressure solenoid and wastegate.
Dodge Colt GT 1990 - Adjustments
This option provides a means for erasing fault code information stored in ECU. Follow DRB-II instructions to accomplish this task.
Dodge Colt GT 1990 - DRB-II ERROR SCREENS SYSTEM FAULT ROM CHECK SUM XXXX MESSAGE
Cartridge or DRB-II failure.
Dodge Colt GT 1990 - SYSTEM FAULT KEYBOARD FAILURE MESSAGE
Restart DRB-II. Ensure DRB-II keys are not pressed during power up. Another possibility is DRB-II failure.
Dodge Colt GT 1990 - SYSTEM FAULT ROM FAILURE XXXX
DRB-II failure.
Dodge Colt GT 1990 - SYSTEM FAULT EEPROM FAILURE
DRB-II failure.
Dodge Colt GT 1990 - SYSTEM FAILURE, COMMUNICATION FAILURE, REFER TO DIAGNOSTIC PROCEDURES MESSAGE
Perform diagnostic connector test. See DRIVEABILITY TEST No. 8 (DR-8). Failure of Mitsubishi Motor Corporation (MMC) adapter is another possibility.
Dodge Colt GT 1990 - SYSTEM FAILURE NO RESPONSE FROM ADAPTER or SYSTEM FAILURE ADAPTER REQUIRED TO DIAGNOSE WITH THIS CARTRIDGE MESSAGE
Ensure you are using a correct Mitsubishi Motor Corporation cartridge. Failure of MMC adapter is another possibility.
Fig. 3: Dodge Colt GT 1990 - Component Locations - 10-Way ECU Connector
Fig. 4: Dodge Colt GT 1990 - Component Locations - 18-Way ECU Connector
Fig. 5: Dodge Colt GT 1990 - Component Locations - 24-Way ECU Connector
Fig. 6: Dodge Colt GT 1990 - Component Locations - Self-Diagnostic Connector Terminal Identification
Dodge Colt GT 1990 - FAULT CODES
NOTE: If fault codes are NOT present and/or DRB-II is used, see ENTERING ON-BOARD DIAGNOSTICS (USING DRB-II).
Dodge Colt GT 1990 1.5L FAULT CODES
Fault Code System Fault Description 11 Open or short in O2 sensor circuit 12 Open or short in airflow sensor circuit 13 Open or short in intake air temperature sensor circuit 14 Open or short in TPS circuit 15 (1) Open or short in motor position sensor circuit 21 Open or short in coolant temperature sensor circuit 23 No voltage change in TDC sensor circuit 24 (2) No voltage change in vehicle speed sensor signal 25 Open or short in barometric pressure sensor 41 Open or short in injector circuit 42 Open or short in fuel pump drive circuit 43 (3) Open or short in EGR temperature sensor circuit
(1) Except Montero & Sigma.
(2) Will not turn on CHECK ENGINE light.
(3) California only. Except Sigma.
Dodge Colt GT 1990 1.6L FAULT CODES
Fault Code System Fault Description 11 Open or short in O2 sensor circuit 12 Open or short in airflow sensor circuit 13 Open or short in intake air temperature sensor circuit 14 Open or short in TPS circuit 21 Open or short in coolant temperature sensor circuit 22 No voltage change in crank angle sensor signal 23 No voltage change in TDC sensor circuit 24 (1) No voltage change in vehicle speed sensor signal 25 Open or short in barometric pressure sensor 41 Open or short in injector circuit 42 Open or short in fuel pump drive circuit 43 (2) Open or short in EGR temperature sensor circuit 44 (3) Open or short in either ignition coil circuit
(1) Will not turn on CHECK ENGINE light.
(2) California only. Except Sigma.
(3) Chrysler Motors models only.
Dodge Colt GT 1990 1.8L FAULT CODES
Fault Code System Fault Description 11 Open or short in O2 sensor circuit 12 Open or short in airflow sensor circuit 13 Open or short in intake air temperature sensor circuit 14 Open or short in TPS circuit 15 (1) Open or short in motor position sensor circuit 21 Open or short in coolant temperature sensor circuit 22 No voltage change in crank angle sensor signal 23 No voltage change in TDC sensor circuit 24 (2) No voltage change in vehicle speed sensor signal 25 Open or short in barometric pressure sensor 41 Open or short in injector circuit 42 Open or short in fuel pump drive circuit
(1) Except Montero & Sigma.
(2) Will not turn on CHECK ENGINE light.
Dodge Colt GT 1990 2.0L FAULT CODES
Fault Code System Fault Description 11 Open or short in O2 sensor circuit 12 (1) Open or short in airflow sensor circuit 12 (2) Open or short in airflow sensor circuit 13 (1) Open or short in intake air temperature sensor circuit 13 (2) Open or short in intake air temperature sensor circuit 14 Open or short in TPS circuit 21 Open or short in coolant temperature sensor circuit 22 No voltage change in crank angle sensor signal 23 No voltage change in TDC sensor circuit 24 (3) No voltage change in vehicle speed sensor signal 25 (1) Open or short in barometric pressure sensor 25 (2) Open or short in barometric pressure sensor 31 (4) Open or short in detonation sensor circuit 41 Open or short in injector circuit 42 Open or short in fuel pump drive circuit 43 (5) Open or short in EGR temperature sensor circuit 44 (6) Open or short in either ignition coil circuit
(1) Turbo only.
(2) Non-Turbo.
(3) Will not turn on CHECK ENGINE light.
(4) 2.0L Turbo only.
(5) California only. Except Sigma.
(6) Chrysler Motors models only.
Dodge Colt GT 1990 - CLEARING CODES
Using DRB-II, from main menu select ADJUSTMENTS. Enter ERASE FAULTS. Follow DRB-II instructions to accomplish this task. If DRB-II is not available, fault codes may be cleared by disconnecting negative battery cable for at least 10 seconds, allowing ECU to clear fault codes.
Dodge Colt GT 1990 - TEST CHARTS - 1.5L
NOTE: The following charts are supplied for Chrysler Motors vehicles.
Dodge Colt GT 1990 - NS-1: TESTING IGNITION CIRCUIT
Fig. 7: Dodge Colt GT 1990 - Component Locations - Circuit Diagram NS-1 (1.5L) (1 of 2)
Fig. 8: Dodge Colt GT 1990 - Component Locations - Circuit Diagram NS-1 (1.5L) (2 of 2)
Fig. 9: Dodge Colt GT 1990 - Component Locations - Flow Chart NS-1 (1.5L) (1 of 3)
Fig. 10: Dodge Colt GT 1990 - Component Locations - Flow Chart NS-1 (1.5L) (2 of 3)
Fig. 11: Dodge Colt GT 1990 - Component Locations - Flow Chart NS-1 (1.5L) (3 of 3)
Dodge Colt GT 1990 - NS-2: CHECKING FOR FUEL PRESSURE
Fig. 12: Dodge Colt GT 1990 - Component Locations - Circuit Diagram NS-2 (1.5L)
Fig. 13: Dodge Colt GT 1990 - Component Locations - Flow Chart NS-2 (1.5L)
Dodge Colt GT 1990 - NS-3: TESTING FUEL PUMP CIRCUIT
Fig. 14: Dodge Colt GT 1990 - Component Locations - Circuit Diagram NS-3 (1.5L)
Fig. 15: Dodge Colt GT 1990 - Component Locations - Flow Chart NS-3 (1.5L)
Dodge Colt GT 1990 - NS-4: TESTING SELF-DIAGNOSTIC CONNECTOR
Fig. 16: Dodge Colt GT 1990 - Component Locations - Circuit Diagram NS-4 (1.5L)
Fig. 17: Dodge Colt GT 1990 - Component Locations - Flow Chart NS-4 (1.5L)
Dodge Colt GT 1990 - NS-5: TESTING CRANK ANGLE SENSOR CIRCUIT
Fig. 18: Dodge Colt GT 1990 - Component Locations - Circuit Diagram NS-5 (1.5L)
Fig. 19: Dodge Colt GT 1990 - Component Locations - Flow Chart NS-5 (1.5L) (1 of 2)
Fig. 20: Dodge Colt GT 1990 - Component Locations - Flow Chart NS-5 (1.5L) (2 of 2)
Dodge Colt GT 1990 - NS-6: TESTING CONTROL RELAY
Fig. 21: Dodge Colt GT 1990 - Component Locations - Circuit Diagram NS-6 (1.5L)
Fig. 22: Dodge Colt GT 1990 - Component Locations - Flow Chart NS-6 (1.5L)
Dodge Colt GT 1990 - DR-1: CHECKING FOR FAULT CODES
Fig. 23: Dodge Colt GT 1990 - Component Locations - Circuit Diagram DR-1 (1.5L)
Fig. 24: Dodge Colt GT 1990 - Component Locations - Flow Chart DR-1 (1.5L) (1 of 2)
Fig. 25: Dodge Colt GT 1990 - Component Locations - Flow Chart DR-1 (1.5L) (1 of 2)
Dodge Colt GT 1990 - DR-2: CODE 11 OXYGEN SENSOR CIRCUIT
Fig. 26: Dodge Colt GT 1990 - Component Locations - Circuit Diagram DR-2 (1.5L)
Fig. 27: Dodge Colt GT 1990 - Component Locations - Flow Chart DR-2 (1.5L)
Dodge Colt GT 1990 - DR-3: CODE 12 AIRFLOW SENSOR CIRCUIT
Fig. 28: Dodge Colt GT 1990 - Component Locations - Circuit Diagram DR-3 (1.5L)
Fig. 29: Dodge Colt GT 1990 - Component Locations - Flow Chart DR-3 (1.5L) (1 of 3)
Fig. 30: Dodge Colt GT 1990 - Component Locations - Flow Chart DR-3 (1.5L) (2 of 3)
Fig. 31: Dodge Colt GT 1990 - Component Locations - Flow Chart DR-3 (1.5L) (3 of 3)
Dodge Colt GT 1990 - DR-4: CODE 13 INTAKE AIR TEMPERATURE SENSOR CIRCUIT
Fig. 32: Dodge Colt GT 1990 - Component Locations - Circuit Diagram DR-4 (1.5L)
Fig. 33: Dodge Colt GT 1990 - Component Locations - Flow Chart DR-4 (1.5L)
Dodge Colt GT 1990 - DR-5: CODE 14 THROTTLE POSITION SENSOR CIRCUIT
Fig. 34: Dodge Colt GT 1990 - Component Locations - Circuit Diagram DR-5 (1.5L)
Fig. 35: Dodge Colt GT 1990 - Component Locations - Flow Chart DR-5 (1.5L) (1 of 2)
Fig. 36: Dodge Colt GT 1990 - Component Locations - Flow Chart DR-5 (1.5L) (2 of 2)
Dodge Colt GT 1990 - DR-6: CODE 15 MOTOR POSITION SENSOR CIRCUIT
Fig. 37: Dodge Colt GT 1990 - Component Locations - Circuit Diagram DR-6 (1.5L)
Fig. 38: Dodge Colt GT 1990 - Component Locations - Flow Chart DR-6 (1.5L) (1 of 2)
Fig. 39: Dodge Colt GT 1990 - Component Locations - Flow Chart DR-6 (1.5L) (2 of 2)
Dodge Colt GT 1990 - DR-7: CODE 21 COOLANT TEMPERATURE SENSOR CIRCUIT
Fig. 40: Dodge Colt GT 1990 - Component Locations - Circuit Diagram DR-7 (1.5L)
Fig. 41: Dodge Colt GT 1990 - Component Locations - Flow Chart DR-7 (1.5L) (1 of 2)
Fig. 42: Dodge Colt GT 1990 - Component Locations - Flow Chart DR-7 (1.5L) (2 of 2)
Dodge Colt GT 1990 - DR-8: TESTING SELF-DIAGNOSTIC CONNECTOR
Fig. 43: Dodge Colt GT 1990 - Component Locations - Circuit Diagram DR-8 (1.5L)
Fig. 44: Dodge Colt GT 1990 - Component Locations - Flow Chart DR-8 (1.5L)
Dodge Colt GT 1990 - DR-9: CODE 23 TOP DEAD CENTER SENSOR CIRCUIT
Fig. 45: Dodge Colt GT 1990 - Component Locations - Circuit Diagram DR-9 (1.5L)
Fig. 46: Dodge Colt GT 1990 - Component Locations - Flow Chart DR-9 (1.5L)
Dodge Colt GT 1990 - DR-10: CODE 24 VEHICLE SPEED SENSOR CIRCUIT
Fig. 47: Dodge Colt GT 1990 - Component Locations - Circuit Diagram DR-10 (1.5L)
Fig. 48: Dodge Colt GT 1990 - Component Locations - Flow Chart DR-10 (1.5L) (1 of 2)
Fig. 49: Dodge Colt GT 1990 - Component Locations - Flow Chart DR-10 (1.5L) (2 of 2)
Dodge Colt GT 1990 - DR-11: CODE 25 BAROMETRIC PRESSURE SENSOR CIRCUIT
Fig. 50: Dodge Colt GT 1990 - Component Locations - Circuit Diagram DR-11 (1.5L)
Fig. 51: Dodge Colt GT 1990 - Component Locations - Flow Chart DR-11 (1.5L) (1 of 2)
Fig. 52: Dodge Colt GT 1990 - Component Locations - Flow Chart DR-11 (1.5L) (2 of 2)
Dodge Colt GT 1990 - DR-12: CODE 41 INJECTOR CIRCUIT
Fig. 53: Dodge Colt GT 1990 - Component Locations - Circuit Diagram DR-12 (1.5L)
Fig. 54: Dodge Colt GT 1990 - Component Locations - Flow Chart DR-12 (1.5L) (1 of 2)
Fig. 55: Dodge Colt GT 1990 - Component Locations - Flow Chart DR-12 (1.5L) (2 of 2)
Dodge Colt GT 1990 - DR-13: CODE 42 FUEL PUMP CIRCUIT
Fig. 56: Dodge Colt GT 1990 - Component Locations - Circuit Diagram DR-13 (1.5L)
Fig. 57: Dodge Colt GT 1990 - Component Locations - Flow Chart DR-13 (1.5L)
Dodge Colt GT 1990 - DR-14: CODE 43 EGR TEMPERATURE SENSOR CIRCUIT
Fig. 58: Dodge Colt GT 1990 - Component Locations - Circuit Diagram DR-14 (1.5L)
Fig. 59: Dodge Colt GT 1990 - Component Locations - Flow Chart DR-14 (1.5L) (1 of 3)
Fig. 60: Dodge Colt GT 1990 - Component Locations - Flow Chart DR-14 (1.5L) (2 of 3)
Fig. 61: Dodge Colt GT 1990 - Component Locations - Flow Chart DR-14 (1.5L) (3 of 3)
Dodge Colt GT 1990 - DR-15: NO FAULT CODE TESTING
Fig. 62: Dodge Colt GT 1990 - Component Locations - Circuit Diagram DR-15 (1.5L)
Fig. 63: Dodge Colt GT 1990 - Component Locations - Circuit Diagram DR-15 (1.5L)
Fig. 64: Dodge Colt GT 1990 - Component Locations - Flow Chart DR-15 (1.5L)
Fig. 65: Dodge Colt GT 1990 - Component Locations - Flow Chart DR-15 (1.5L)
Dodge Colt GT 1990 - DR-16: NO FAULT CODE SENSOR TEST
Dodge Colt GT 1990 DR-16 NO FAULT CODE SYSTEM TEST
DRBII EGR Temp. Display Engine Conditions 160?F Hot Idle 350?F 25 MPH at 3,500 RPM 311?F 55 MPH at 3,500 RPM
Fig. 66: Dodge Colt GT 1990 - Component Locations - Circuit Diagram DR-16 (1.5L) (1 of 2)
Fig. 67: Dodge Colt GT 1990 - Component Locations - Circuit Diagram DR-16 (1.5L) (2 of 2)
Fig. 68: Dodge Colt GT 1990 - Component Locations - Flow Chart DR-16 (1.5L) (1 of 5)
Dodge Colt GT 1990 DR-16 NO FAULT CODE SYSTEM TEST
Altitude Baro Reading -1,000 Ft. 31.01" -900 Ft. 30.90" Sea Level 29.92" 500 Ft. 29.38" 1,000 Ft. 28.85" 1,500 Ft. 28.33" 2,000 Ft. 27.82" 3,000 Ft. 26.81" 4,000 Ft. 25.84" 6,000 Ft. 23.97" 8,000 Ft. 22.22" 10,000 Ft. 20.57" 12,000 Ft. 19.02" 14,000 Ft. 17.57"
Fig. 69: Dodge Colt GT 1990 - Component Locations - Flow Chart DR-16 (1.5L) (2 of 5)
Fig. 70: Dodge Colt GT 1990 - Component Locations - Flow Chart DR-16 (1.5L) (3 of 5)
Fig. 71: Dodge Colt GT 1990 - Component Locations - Flow Chart DR-16 (1.5L) (4 of 5)
Fig. 72: Dodge Colt GT 1990 - Component Locations - Flow Chart DR-16 (1.5L) (5 of 5)
Dodge Colt GT 1990 - DR-17: TESTING PURGE SOLENOID CIRCUIT
Fig. 73: Dodge Colt GT 1990 - Component Locations - Circuit Diagram DR-17 (1.5L)
Fig. 74: Dodge Colt GT 1990 - Component Locations - Flow Chart DR-17 (1.5L)
Dodge Colt GT 1990 - DR-18: NO FAULT CODE MECHANICAL TEST
At this point in the driveability test procedure, you have determined that all of the engine control systems are operating as they were designed to. Therefore, they are not the cause of the driveability problem.
The following additional items can not be overlooked as possible causes of a driveability problem.
- THROTTLE VALVE AREA
Dirt or ice buildup causing rough idle and stalling. - ENGINE IGNITION TIMING
Must be set with timing terminal grounded. - ENGINE VACUUM
Must be normal for your altitude. - ENGINE VALVE TIMING
To specifications. - ENGINE COMPRESSION
To specifications. - ENGINE P.C.V. SYSTEM
Must flow freely. - ENGINE EXHAUST SYSTEM
Must be free of any restrictions. - POWER BRAKE BOOSTER
No internal vacuum leaks. - TORQUE CONVERTER CONDITION
May cause very low power at breakaway or high speed (Only 1 condition at a time). - FUEL CONTAMINATION
High alcohol or water content. - FUEL INJECTORS
Rough idle may be caused by injector wiring not connected to correct injector. - ENGINE SECONDARY IGNITION CHECK
Abnormal scope patterns. - TECHNICAL SERVICE BULLETINS
Any that apply to vehicle. - All air intake piping and vacuum hoses must be in place and secure. The proper air filter element must be used.
- FUEL PRESSURE
Must be correct. Specification: With no vacuum at the regulator:- 48 PSI on V6 & non-turbo 4 Cyl. engines
- 36 PSI on turbo engines
Dodge Colt GT 1990 - TEST CHARTS - 1.6L NS-1: TESTING IGNITION CIRCUIT
Fig. 75: Dodge Colt GT 1990 - Component Locations - Circuit Diagram NS-1 (1.6L)
Fig. 76: Dodge Colt GT 1990 - Component Locations - Flow Chart NS-1 (1.6L)
Fig. 77: Dodge Colt GT 1990 - Component Locations - Circuit Diagram NS-1 (1.6L)
Fig. 78: Dodge Colt GT 1990 - Component Locations - Flow Chart NS-1 (1.6L) (1 of 4)
Fig. 79: Dodge Colt GT 1990 - Component Locations - Flow Chart NS-1 (1.6L) (2 of 4)
Fig. 80: Dodge Colt GT 1990 - Component Locations - Flow Chart NS-1 (1.6L) (3 of 4)
Fig. 81: Dodge Colt GT 1990 - Component Locations - Flow Chart NS-1 (1.6L) (4 of 4)
Dodge Colt GT 1990 - NS-2: TESTING CRANK ANGLE SENSOR CIRCUIT
Fig. 82: Dodge Colt GT 1990 - Component Locations - Circuit Diagram NS-2 (1.6L)
Fig. 83: Dodge Colt GT 1990 - Component Locations - Flow Chart NS-2 (1.6L)
Dodge Colt GT 1990 - NS-3: TESTING FUEL SYSTEM
Fig. 84: Dodge Colt GT 1990 - Component Locations - Circuit Diagram NS-3 (1.6L)
Fig. 85: Dodge Colt GT 1990 - Component Locations - Circuit Diagram NS-3 (1.6L)
Fig. 86: Dodge Colt GT 1990 - Component Locations - Flow Chart NS-3 (1.6L) (1 of 3)
Fig. 87: Dodge Colt GT 1990 - Component Locations - Flow Chart NS-3 (1.6L) (2 of 3)
Fig. 88: Dodge Colt GT 1990 - Component Locations - Flow Chart NS-3 (1.6L) (3 of 3)
Dodge Colt GT 1990 - NS-4: TESTING FUEL PUMP CIRCUIT
Fig. 89: Dodge Colt GT 1990 - Component Locations - Circuit Diagram NS-4 (1.6L)
Fig. 90: Dodge Colt GT 1990 - Component Locations - Circuit Diagram NS-4 (1.6L)
Fig. 91: Dodge Colt GT 1990 - Component Locations - Flow Chart NS-4 (1.6L) (1 of 2)
Fig. 92: Dodge Colt GT 1990 - Component Locations - Flow Chart NS-4 (1.6L) (2 of 2)
Dodge Colt GT 1990 - NS-5: TESTING CONTROL RELAY CIRCUIT
Fig. 93: Dodge Colt GT 1990 - Component Locations - Circuit Diagram NS-5 (1.6L)
Fig. 94: Dodge Colt GT 1990 - Component Locations - Flow Chart NS-5 (1.6L)
Dodge Colt GT 1990 - NS-6: TESTING SELF-DIAGNOSTIC CONNECTOR
Fig. 95: Dodge Colt GT 1990 - Component Locations - Circuit Diagram NS-6 (1.6L)
Fig. 96: Dodge Colt GT 1990 - Component Locations - Flow Chart NS-6 (1.6L)
Dodge Colt GT 1990 - DR-1: CHECKING FOR FAULT CODES
Fig. 97: Dodge Colt GT 1990 - Component Locations - Circuit Diagram DR-1 (1.6L)
Fig. 98: Dodge Colt GT 1990 - Component Locations - Flow Chart DR-1 (1.6L) (1 of 2)
Fig. 99: Dodge Colt GT 1990 - Component Locations - Flow Chart DR-1 (1.6L) (2 of 2)
Dodge Colt GT 1990 - DR-2: FAULT CODE TESTS
Fig. 100: Dodge Colt GT 1990 - Component Locations - Flow Chart DR-2 (1.6L) (1 of 2)
Fig. 101: Dodge Colt GT 1990 - Component Locations - Flow Chart DR-2 (1.6L) (2 of 2)
Dodge Colt GT 1990 - DR-3: CODE 11 OXYGEN SENSOR CIRCUIT
Fig. 102: Dodge Colt GT 1990 - Component Locations - Circuit Diagram DR-3 (1.6L)
Fig. 103: Dodge Colt GT 1990 - Component Locations - Flow Chart DR-3 (1.6L) (1 of 2)
Fig. 104: Dodge Colt GT 1990 - Component Locations - Flow Chart DR-3 (1.6L) (2 of 2)
Dodge Colt GT 1990 - DR-4: CODE 12 AIRFLOW SENSOR CIRCUIT
Fig. 105: Dodge Colt GT 1990 - Component Locations - Circuit Diagram DR-4 (1.6L)
Fig. 106: Dodge Colt GT 1990 - Component Locations - Flow Chart DR-4 (1.6L) (1 of 3)
Fig. 107: Dodge Colt GT 1990 - Component Locations - Flow Chart DR-4 (1.6L) (2 of 3)
Fig. 108: Dodge Colt GT 1990 - Component Locations - Flow Chart DR-4 (1.6L) (3 of 3)
Dodge Colt GT 1990 - DR-5: CODE 13 INTAKE AIR TEMPERATURE SENSOR CIRCUIT
Fig. 109: Dodge Colt GT 1990 - Component Locations - Circuit Diagram DR-5 (1.6L)
Fig. 110: Dodge Colt GT 1990 - Component Locations - Flow Chart DR-5 (1.6L) (1 of 2)
Fig. 111: Dodge Colt GT 1990 - Component Locations - Flow Chart DR-5 (1.6L) (2 of 2)
Dodge Colt GT 1990 - DR-6: CODE 14 THROTTLE POSITION SENSOR CIRCUIT
Fig. 112: Dodge Colt GT 1990 - Component Locations - Circuit Diagram DR-6 (1.6L)
Fig. 113: Dodge Colt GT 1990 - Component Locations - Flow Chart DR-6 (1.6L) (1 of 3)
Fig. 114: Dodge Colt GT 1990 - Component Locations - Flow Chart DR-6 (1.6L) (2 of 3)
Fig. 115: Dodge Colt GT 1990 - Component Locations - Flow Chart DR-6 (1.6L) (3 of 3)
Dodge Colt GT 1990 - DR-7: CODE 21 COOLANT TEMPERATURE CIRCUIT
Fig. 116: Dodge Colt GT 1990 - Component Locations - Circuit Diagram DR-7 (1.6L)
Fig. 117: Dodge Colt GT 1990 - Component Locations - Flow Chart DR-7 (1.6L) (1 of 2)
Fig. 118: Dodge Colt GT 1990 - Component Locations - Flow Chart DR-7 (1.6L) (2 of 2)
Dodge Colt GT 1990 - DR-8: CODE 22 CRANK ANGLE SENSOR CIRCUIT
Fig. 119: Dodge Colt GT 1990 - Component Locations - Circuit Diagram DR-8 (1.6L)
Fig. 120: Dodge Colt GT 1990 - Component Locations - Flow Chart DR-8 (1.6L)
Dodge Colt GT 1990 - DR-9: CODE 23 TOP DEAD CENTER SENSOR CIRCUIT
Fig. 121: Dodge Colt GT 1990 - Component Locations - Circuit Diagram DR-9 (1.6L)
Fig. 122: Dodge Colt GT 1990 - Component Locations - Flow Chart DR-9 (1.6L) (1 of 2)
Fig. 123: Dodge Colt GT 1990 - Component Locations - Flow Chart DR-9 (1.6L) (2 of 2)
Dodge Colt GT 1990 - DR-10: CODE 24 VEHICLE SPEED SENSOR CIRCUIT
Fig. 124: Dodge Colt GT 1990 - Component Locations - Circuit Diagram DR-10 (1.6L)
Fig. 125: Dodge Colt GT 1990 - Component Locations - Flow Chart DR-10 (1.6L) (1 of 2)
Fig. 126: Dodge Colt GT 1990 - Component Locations - Flow Chart DR-10 (1.6L) (2 of 2)
Dodge Colt GT 1990 - DR-11: CODE 25 BAROMETRIC PRESSURE SENSOR CIRCUIT
Fig. 127: Dodge Colt GT 1990 - Component Locations - Circuit Diagram DR-11 (1.6L)
Fig. 128: Dodge Colt GT 1990 - Component Locations - Flow Chart DR-11 (1.6L) (1 of 2)
Fig. 129: Dodge Colt GT 1990 - Component Locations - Flow Chart DR-11 (1.6L) (2 of 2)
Dodge Colt GT 1990 - DR-12: CODE 41 INJECTOR CIRCUIT
Fig. 130: Dodge Colt GT 1990 - Component Locations - Circuit Diagram DR-12 (1.6L)
Fig. 131: Dodge Colt GT 1990 - Component Locations - Flow Chart DR-12 (1.6L) (1 of 5)
Fig. 132: Dodge Colt GT 1990 - Component Locations - Flow Chart DR-12 (1.6L) (2 of 5)
Fig. 133: Dodge Colt GT 1990 - Component Locations - Flow Chart DR-12 (1.6L) (3 of 5)
Fig. 134: Dodge Colt GT 1990 - Component Locations - Flow Chart DR-12 (1.6L) (4 of 5)
Fig. 135: Dodge Colt GT 1990 - Component Locations - Flow Chart DR-12 (1.6L) (5 of 5)
Dodge Colt GT 1990 - DR-13: CODE 42 FUEL PUMP CIRCUIT
Fig. 136: Dodge Colt GT 1990 - Component Locations - Circuit Diagram DR-13 (1.6L)
Fig. 137: Dodge Colt GT 1990 - Component Locations - Flow Chart DR-13 (1.6L) (1 of 2)
Fig. 138: Dodge Colt GT 1990 - Component Locations - Flow Chart DR-13 (1.6L) (2 of 2)
Dodge Colt GT 1990 - DR-14: CODE 43 EGR TEMPERATURE SENSOR CIRCUIT
Fig. 139: Dodge Colt GT 1990 - Component Locations - Circuit Diagram DR-14 (1.6L)
Fig. 140: Dodge Colt GT 1990 - Component Locations - Flow Chart DR-14 (1.6L) (1 of 2)
Fig. 141: Dodge Colt GT 1990 - Component Locations - Flow Chart DR-14 (1.6L) (2 of 2)
Dodge Colt GT 1990 - DR-15: CODE 44 IGNITION COIL CIRCUIT
Fig. 142: Dodge Colt GT 1990 - Component Locations - Circuit Diagram DR-15 (1.6L)
Fig. 143: Dodge Colt GT 1990 - Component Locations - Flow Chart DR-15 (1.6L) (1 of 4)
Fig. 144: Dodge Colt GT 1990 - Component Locations - Flow Chart DR-15 (1.6L) (2 of 4)
Fig. 145: Dodge Colt GT 1990 - Component Locations - Flow Chart DR-15 (1.6L) (3 of 4)
Fig. 146: Dodge Colt GT 1990 - Component Locations - Flow Chart DR-15 (1.6L) (4 of 4)
Dodge Colt GT 1990 - DR-16: NO FAULT CODE TESTS
Fig. 147: Dodge Colt GT 1990 - Component Locations - Circuit Diagram DR-16 (1.6L)
Fig. 148: Dodge Colt GT 1990 - Component Locations - Circuit Diagram DR-16 (1.6L)
Fig. 149: Dodge Colt GT 1990 - Component Locations - Flow Chart DR-16 (1.6L) (1 of 3)
Fig. 150: Dodge Colt GT 1990 - Component Locations - Flow Chart DR-16 (1.6L) (2 of 3)
Fig. 151: Dodge Colt GT 1990 - Component Locations - Flow Chart DR-16 (1.6L) (3 of 3)
Dodge Colt GT 1990 - DR-17: NO FAULT CODE SENSOR TESTS
Fig. 152: Dodge Colt GT 1990 - Component Locations - Circuit Diagram DR-17 (1.6L) (1 Of 6)
Fig. 153: Dodge Colt GT 1990 - Component Locations - Circuit Diagram DR-17 (1.6L) (2 Of 6)
Fig. 154: Dodge Colt GT 1990 - Component Locations - Circuit Diagram DR-17 (1.6L) (3 Of 6)
Fig. 155: Dodge Colt GT 1990 - Component Locations - Circuit Diagram DR-17 (1.6L) (4 Of 6)
Fig. 156: Dodge Colt GT 1990 - Component Locations - Circuit Diagram DR-17 (1.6L) (5 Of 6)
Fig. 157: Dodge Colt GT 1990 - Component Locations - Circuit Diagram DR-17 (1.6L) (6 Of 6)
Fig. 158: Dodge Colt GT 1990 - Component Locations - Flow Chart DR-17 (1.6L) (1 of 6)
Fig. 159: Dodge Colt GT 1990 - Component Locations - Flow Chart DR-17 (1.6L) (2 of 6)
Fig. 160: Dodge Colt GT 1990 - Component Locations - Flow Chart DR-17 (1.6L) (3 of 6)
Fig. 161: Dodge Colt GT 1990 - Component Locations - Flow Chart DR-17 (1.6L) (4 of 6)
Fig. 162: Dodge Colt GT 1990 - Component Locations - Flow Chart DR-17 (1.6L) (5 of 6)
Fig. 163: Dodge Colt GT 1990 - Component Locations - Flow Chart DR-17 (1.6L) (6 of 6)
Dodge Colt GT 1990 - DR-18: NO FAULT CODE FUEL PRESSURE TEST
Fig. 164: Dodge Colt GT 1990 - Component Locations - Flow Chart DR-18 (1.6L)
Dodge Colt GT 1990 - DR-19: NO FAULT CODE EGR SYSTEM TEST - 1.6L
Fig. 165: Dodge Colt GT 1990 - Component Locations - Circuit Diagram DR-19 (1.6L)
Fig. 166: Dodge Colt GT 1990 - Component Locations - Flow Chart DR-19 (1.6L)
Dodge Colt GT 1990 - DR-20: NO FAULT CODE PURGE CONTROL CIRCUIT TEST
Fig. 167: Dodge Colt GT 1990 - Component Locations - Flow Chart DR-19 (1.6L)
Dodge Colt GT 1990 - DR-21: NO FAULT CODE MECHANICAL TEST
At this point in the driveability test procedure, you have determined that all of the engine control systems are operating as they were designed to. Therefore, they are not the cause of the driveability problem.
The following additional items can not be overlooked as possible causes of a driveability problem.
- ENGINE IGNITION TIMING
Must be set with timing terminal grounded. - ENGINE VACUUM
Must be normal for your altitude. - ENGINE VALVE TIMING
To specifications. - ENGINE COMPRESSION
To specifications. - ENGINE P.C.V. SYSTEM
Must flow freely. - ENGINE EXHAUST SYSTEM
Must be free of any restrictions. - POWER BRAKE BOOSTER
No internal vacuum leaks. - TORQUE CONVERTER CONDITION
May cause very low power at breakaway or high speed (Only 1 condition at a time). - FUEL CONTAMINATION
High alcohol or water content. - FUEL INJECTORS
Rough idle may be caused by injector wiring not connected to correct injector. - ENGINE SECONDARY IGNITION CHECK
Abnormal scope patterns. - TECHNICAL SERVICE BULLETINS
Any that apply to vehicle. - All air intake piping and vacuum hoses must be in place and secure. The proper air filter element must be used.
- FUEL PRESSURE
Must be correct. Specification: With no vacuum at the regulator:- 48 PSI on V6 & non-turbo 4 Cyl. engines
- 36 PSI on turbo engines
Dodge Colt GT 1990 - NS-VER: NO START VERIFICATION PROCEDURE
Fig. 168: Dodge Colt GT 1990 - Component Locations - Flow Chart NS-VER (1.6L)
Dodge Colt GT 1990 - DR-VER: DRIVEABILITY VERIFICATION PROCEDURE
Fig. 169: Dodge Colt GT 1990 - Component Locations - Flow Chart DR-VER (1.6L)
Dodge Colt GT 1990 - TEST CHARTS - 1.8L NS-1: TESTING IGNITION CIRCUIT
Fig. 170: Dodge Colt GT 1990 - Component Locations - Circuit Diagram NS-1 (1.8L) (1 Of 2)
Fig. 171: Dodge Colt GT 1990 - Component Locations - Circuit Diagram NS-1 (1.8L) (2 Of 2)
Fig. 172: Dodge Colt GT 1990 - Component Locations - Flow Chart NS-1 (1.8L) (1 of 3)
Fig. 173: Dodge Colt GT 1990 - Component Locations - Flow Chart NS-1 (1.8L) (2 of 3)
Fig. 174: Dodge Colt GT 1990 - Component Locations - Flow Chart NS-1 (1.8L) (3 of 3)
Dodge Colt GT 1990 - NS-2: TESTING FOR FUEL
Fig. 175: Dodge Colt GT 1990 - Component Locations - Flow Chart NS-2 (1.8L)
Dodge Colt GT 1990 - NS-3: CODE 42 FUEL PUMP CIRCUIT
Fig. 176: Dodge Colt GT 1990 - Component Locations - Circuit Diagram NS-3 (1.8L)
Fig. 177: Dodge Colt GT 1990 - Component Locations - Flow Chart NS-3 (1.8L)
Dodge Colt GT 1990 - NS-4: TESTING DIAGNOSTIC CONNECTOR
Fig. 178: Dodge Colt GT 1990 - Component Locations - Circuit Diagram NS-4 (1.8L)
Fig. 179: Dodge Colt GT 1990 - Component Locations - Flow Chart NS-4 (1.8L)
Dodge Colt GT 1990 - NS-5: CODE 22 CRANK ANGLE SENSOR
Fig. 180: Dodge Colt GT 1990 - Component Locations - Circuit Diagram NS-5 (1.8L)
Fig. 181: Dodge Colt GT 1990 - Component Locations - Flow Chart NS-5 (1.8L) (1 of 2)
Fig. 182: Dodge Colt GT 1990 - Component Locations - Flow Chart NS-5 (1.8L) (2 of 2)
Dodge Colt GT 1990 - NS-6: TESTING CONTROL RELAY
Fig. 183: Dodge Colt GT 1990 - Component Locations - Flow Chart NS-6 (1.8L)
Dodge Colt GT 1990 - DR-1: CHECKING FOR FAULT CODES
Fig. 184: Dodge Colt GT 1990 - Component Locations - Circuit Diagram DR-1 (1.8L)
Fig. 185: Dodge Colt GT 1990 - Component Locations - Flow Chart DR-1 (1.8L) (1 of 2)
Fig. 186: Dodge Colt GT 1990 - Component Locations - Flow Chart DR-1 (1.8L) (2 of 2)
Dodge Colt GT 1990 - DR-2: CODE 11 OXYGEN SENSOR CIRCUIT
Fig. 187: Dodge Colt GT 1990 - Component Locations - Circuit Diagram DR-2 (1.8L)
Fig. 188: Dodge Colt GT 1990 - Component Locations - Flow Chart DR-2 (1.8L)
Dodge Colt GT 1990 - DR-3: CODE 12 AIRFLOW SENSOR CIRCUIT
Fig. 189: Dodge Colt GT 1990 - Component Locations - Circuit Diagram DR-3 (1.8L)
Fig. 190: Dodge Colt GT 1990 - Component Locations - Flow Chart DR-3 (1.8L) (1 of 3)
Fig. 191: Dodge Colt GT 1990 - Component Locations - Flow Chart DR-3 (1.8L) (2 of 3)
Fig. 192: Dodge Colt GT 1990 - Component Locations - Flow Chart DR-3 (1.8L) (3 of 3)
Dodge Colt GT 1990 - DR-4: CODE 13 INTAKE AIR TEMPERATURE SENSOR CIRCUIT
Fig. 193: Dodge Colt GT 1990 - Component Locations - Circuit Diagram DR-4 (1.8L)
Fig. 194: Dodge Colt GT 1990 - Component Locations - Flow Chart DR-4 (1.8L)
Dodge Colt GT 1990 - DR-5: CODE 14 THROTTLE POSITION SENSOR CIRCUIT
Fig. 195: Dodge Colt GT 1990 - Component Locations - Circuit Diagram DR-5 (1.8L)
Fig. 196: Dodge Colt GT 1990 - Component Locations - Flow Chart DR-5 (1.8L) (1 of 2)
Fig. 197: Dodge Colt GT 1990 - Component Locations - Flow Chart DR-5 (1.8L) (2 of 2)
Dodge Colt GT 1990 - DR-6: CODE 15 MOTOR POSITION SENSOR CIRCUIT
Fig. 198: Dodge Colt GT 1990 - Component Locations - Circuit Diagram DR-6 (1.8L)
Fig. 199: Dodge Colt GT 1990 - Component Locations - Flow Chart DR-6 (1.8L) (1 of 2)
Fig. 200: Dodge Colt GT 1990 - Component Locations - Flow Chart DR-6 (1.8L) (2 of 2)
Dodge Colt GT 1990 - DR-7: CODE 21 COOLANT TEMPERATURE SENSOR CIRCUIT
Fig. 201: Dodge Colt GT 1990 - Component Locations - Circuit Diagram DR-7 (1.8L)
Fig. 202: Dodge Colt GT 1990 - Component Locations - Flow Chart DR-7 (1.8L) (1 of 2)
Fig. 203: Dodge Colt GT 1990 - Component Locations - Flow Chart DR-7 (1.8L) (2 of 2)
Dodge Colt GT 1990 - DR-8: TESTING DIAGNOSTIC CONNECTOR
Fig. 204: Dodge Colt GT 1990 - Component Locations - Circuit Diagram DR-8 (1.8L)
Fig. 205: Dodge Colt GT 1990 - Component Locations - Flow Chart DR-8 (1.8L)
Dodge Colt GT 1990 - DR-9: CODE 23 TOP DEAD CENTER SENSOR CONNECTOR
Fig. 206: Dodge Colt GT 1990 - Component Locations - Circuit Diagram DR-9 (1.8L)
Fig. 207: Dodge Colt GT 1990 - Component Locations - Flow Chart DR-9 (1.8L)
Dodge Colt GT 1990 - DR-10: CODE 24 VEHICLE SPEED SENSOR CIRCUIT
Fig. 208: Dodge Colt GT 1990 - Component Locations - Circuit Diagram DR-10 (1.8L)
Fig. 209: Dodge Colt GT 1990 - Component Locations - Flow Chart DR-10 (1.8L) (1 of 2)
Fig. 210: Dodge Colt GT 1990 - Component Locations - Flow Chart DR-10 (1.8L) (2 of 2)
Dodge Colt GT 1990 - DR-11: CODE 25 BAROMETRIC PRESSURE SENSOR CIRCUIT
Fig. 211: Dodge Colt GT 1990 - Component Locations - Circuit Diagram DR-11 (1.8L)
Fig. 212: Dodge Colt GT 1990 - Component Locations - Flow Chart DR-11 (1.8L) (1 of 2)
Fig. 213: Dodge Colt GT 1990 - Component Locations - Flow Chart DR-11 (1.8L) (2 of 2)
Dodge Colt GT 1990 - DR-12: CODE 41 INJECTOR CIRCUIT
Fig. 214: Dodge Colt GT 1990 - Component Locations - Circuit Diagram DR-12 (1.8L)
Fig. 215: Dodge Colt GT 1990 - Component Locations - Flow Chart DR-12 (1.8L) (1 of 5)
Fig. 216: Dodge Colt GT 1990 - Component Locations - Flow Chart DR-12 (1.8L) (2 of 5)
Fig. 217: Dodge Colt GT 1990 - Component Locations - Flow Chart DR-12 (1.8L) (3 of 5)
Fig. 218: Dodge Colt GT 1990 - Component Locations - Flow Chart DR-12 (1.8L) (4 of 5)
Fig. 219: Dodge Colt GT 1990 - Component Locations - Flow Chart DR-12 (1.8L) (5 of 5)
Dodge Colt GT 1990 - DR-15: NO FAULT CODE TESTING
Fig. 220: Dodge Colt GT 1990 - Component Locations - Circuit Diagram DR-15 (1.8L) (1 of 2)
Fig. 221: Dodge Colt GT 1990 - Component Locations - Circuit Diagram DR-15 (1.8L) (2 of 2)
Fig. 222: Dodge Colt GT 1990 - Component Locations - Flow Chart DR-15 (1.8L) (1 of 2)
Fig. 223: Dodge Colt GT 1990 - Component Locations - Flow Chart DR-15 (1.8L) (2 of 2)
Fig. 224: Dodge Colt GT 1990 - Component Locations - Circuit Diagram DR-15 (1.8L) (1 of 2)
Fig. 225: Dodge Colt GT 1990 - Component Locations - Circuit Diagram DR-15 (1.8L) (2 of 2)
Dodge Colt GT 1990 - DR-16: NO FAULT CODE SENSOR TEST
Fig. 226: Dodge Colt GT 1990 - Component Locations - Circuit Diagram DR-16 (1.8L) (1 Of 2)
Fig. 227: Dodge Colt GT 1990 - Component Locations - Circuit Diagram DR-16 (1.8L) (2 Of 2)
Fig. 228: Dodge Colt GT 1990 - Component Locations - Flow Chart DR-16 (1.8L) (1 of 5)
Fig. 229: Dodge Colt GT 1990 - Component Locations - Flow Chart DR-16 (1.8L) (2 of 5)
Fig. 230: Dodge Colt GT 1990 - Component Locations - Flow Chart DR-16 (1.8L) (3 of 5)
Fig. 231: Dodge Colt GT 1990 - Component Locations - Flow Chart DR-16 (1.8L) (4 of 5)
Fig. 232: Dodge Colt GT 1990 - Component Locations - Flow Chart DR-16 (1.8L) (5 of 5)
Dodge Colt GT 1990 - DR-17: PURGE SOLENOID
Fig. 233: Dodge Colt GT 1990 - Component Locations - Circuit Diagram DR-17 (1.8L)
Fig. 234: Dodge Colt GT 1990 - Component Locations - Flow Chart DR-17 (1.8L)
Dodge Colt GT 1990 - DR-18: NO FAULT CODE MECHANICAL TEST
At this point in the driveability test procedure, you have determined that all of the engine control systems are operating as they were designed to. Therefore, they are not the cause of the driveability problem.
The following additional items can not be overlooked as possible causes of a driveability problem.
- THROTTLE VALVE AREA
Dirt or ice buildup causing rough idle and stalling. - ENGINE IGNITION TIMING
Must be set with timing terminal grounded. - ENGINE VACUUM
Must be normal for your altitude. - ENGINE VALVE TIMING
To specifications. - ENGINE COMPRESSION
To specifications. - ENGINE P.C.V. SYSTEM
Must flow freely. - ENGINE EXHAUST SYSTEM
Must be free of any restrictions. - POWER BRAKE BOOSTER
No internal vacuum leaks. - TORQUE CONVERTER CONDITION
May cause very low power at breakaway or high speed (Only 1 condition at a time). - FUEL CONTAMINATION
High alcohol or water content. - FUEL INJECTORS
Rough idle may be caused by injector wiring not connected to correct injector. - ENGINE SECONDARY IGNITION CHECK
Abnormal scope patterns. - TECHNICAL SERVICE BULLETINS
Any that apply to vehicle. - All air intake piping and vacuum hoses must be in place and secure. The proper air filter element must be used.
- FUEL PRESSURE
Must be correct. Specification: With no vacuum at the regulator:- 48 PSI on V6 & non-turbo 4 Cyl. engines
- 36 PSI on turbo engines
Dodge Colt GT 1990 - TEST CHARTS - 2.0L NS-1: IGNITION CHECK FLOW CHARTS
Dodge Colt GT 1990 - NS-2: CHECKING CRANK ANGLE SENSOR
Fig. 240: Dodge Colt GT 1990 - Component Locations - NS-2 Flow Chart & Circuit Diagram (2.0L)
Dodge Colt GT 1990 - NS-3: FUEL TEST
Dodge Colt GT 1990 - NS-4: CHECKING FUEL PUMP OPERATION
Dodge Colt GT 1990 - NS-5: CHECKING CONTROL RELAY CIRCUIT
Fig. 246: Dodge Colt GT 1990 - Component Locations - NS-5 Flow Chart & Circuit Diagram (2.0L)
Dodge Colt GT 1990 - NS-VER: NO START VERIFICATION TEST
Fig. 247: Dodge Colt GT 1990 - Component Locations - NS-VER Flow Chart & Circuit Diagram (2.0L)
Dodge Colt GT 1990 - DR-1: FAULT CODE CHECK
Dodge Colt GT 1990 - DR-2: CHECKING OXYGEN SENSOR
Dodge Colt GT 1990 - DR-3: CHECKING AIRFLOW SENSOR - TURBO
Dodge Colt GT 1990 - DR-4: CHECKING AIRFLOW SENSOR - NON-TURBO
Dodge Colt GT 1990 - DR-5: CHECKING INTAKE AIR TEMP SENSOR - TURBO
Fig. 257: Dodge Colt GT 1990 - Component Locations - DR-5 Circuit Diagram (2.0L Turbo)
Fig. 258: Dodge Colt GT 1990 - Component Locations - DR-5 Flow Chart (1 of 2) (2.0L Turbo)
Fig. 259: Dodge Colt GT 1990 - Component Locations - DR-5 Flow Chart (2 of 2) (2.0L Turbo)
Dodge Colt GT 1990 - DR-6: CHECKING INTAKE AIR TEMP SENSOR - NON-TURBO
Dodge Colt GT 1990 - DR-7: CHECKING THROTTLE POSITION SENSOR (TPS)
Dodge Colt GT 1990 - DR-8: CHECKING COOLANT TEMPERATURE SENSOR (CTS)
Dodge Colt GT 1990 - DR-9: CHECKING CRANK ANGLE SENSOR
Dodge Colt GT 1990 - DR-10: CHECKING TDC SENSOR
Dodge Colt GT 1990 - DR-11: CHECKING VEHICLE SPEED SENSOR
Dodge Colt GT 1990 - DR-12: CHECKING BAROMETRIC PRESSURE SENSOR - TURBO
Dodge Colt GT 1990 - DR-13: CHECKING BAROMETRIC PRESSURE SENSOR - NON-TURBO
Fig. 274: Dodge Colt GT 1990 - Component Locations - DR-13 Flow Chart & Circuit Diagram (2.0L)
Dodge Colt GT 1990 - DR-14: CHECKING DETONATION SENSOR
Dodge Colt GT 1990 - DR-15: CHECKING INJECTOR CIRCUIT
Dodge Colt GT 1990 - DR-16: CHECKING FUEL PUMP CONTROL CIRCUIT
Dodge Colt GT 1990 - DR-17: TESTING EGR TEMPERATURE SENSOR CIRCUIT
Dodge Colt GT 1990 - DR-18: CHECKING IGNITION COIL CIRCUIT
Dodge Colt GT 1990 - DR-19: NO-FAULT CODE, DRB-II ATM NOT RUNNING TEST
Dodge Colt GT 1990 - DR-20: NO-FAULT CODE, DRB-II SWITCHES NOT RUNNING TEST
Dodge Colt GT 1990 - DR-21: NO-FAULT CODE TEST, DRB-II SENSOR TEST
Dodge Colt GT 1990 - DR-22: NO-FAULT CODE MECHANICAL TEST
At this point in the driveability test procedure you have determined that all of the engine controls systems are operating as they were designed to. Therefore, they are not the cause of the driveability problem. The following additional items should be checked as possible causes:
- ENGINE VACUUM
Must be at least 13 inches in neutral. - ENGINE VALVE TIMING
Set to specifications. - ENGINE COMPRESSION
To specifications. - EXHAUST SYSTEM
Free from any restrictions. - PCV SYSTEM
Must flow freely. - DRIVE SPROCKETS
Camshaft and crank shaft. - TORQUE CONVERTER STALL SPEED
To specifications. - POWER BRAKE BOOSTER
No internal vacuum leak. - FUEL CONTAMINATION
High alcohol and water content. - FUEL INJECTORS
Rough idle may be caused by injector control wire not connected to correct injector. - TECHNICAL SERVICE BULLETINS
Any that may apply to vehicle. - ENGINE SECONDARY IGNITION CHECK
Any abnormal scope pattern. - TECHNICAL SERVICE BULLETINS
Any that apply to vehicle. - All air intake piping and vacuum hoses must be in place and secure. The proper air filter element must be used.
- FUEL PRESSURE
Must be correct. Specification: With no vacuum at the regulator:- 48 PSI on V6 & non-turbo 4 Cyl. engines
- 36 PSI on turbo engines
Dodge Colt GT 1990 - DR-VER: DRIVEABILITY VERIFICATION TEST
Fig. 300: Dodge Colt GT 1990 - Component Locations - DR-VER Flow Chart (2.0L)
Dodge Colt GT 1990 - SUMMARY
If no hard fault codes (or only pass codes) are present, proceed to TESTS W/O CODES article for diagnosis by symptom (i.e. ROUGH IDLE, NO START, etc.) or intermittent diagnostic procedures.