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Dodge Dynasty LE 1991 - 1991 ENGINE PERFORMANCE Self-Diagnostics - 3.0L V6 (VIN3)
Dodge Dynasty LE 1991 - INTRODUCTION
If no faults were found while performing BASIC DIAGNOSTIC PROCEDURES in the BASIC TESTING , proceed with self-diagnostics. If no fault codes or only pass codes are present after entering self-diagnostics, proceed to the TESTS W/O CODES article for diagnosis by symptom (i.e. ROUGH IDLE, NO START, etc.).
Dodge Dynasty LE 1991 - MODEL IDENTIFICATION
Dodge Dynasty LE 1991 VEHICLE BODY IDENTIFICATION
Model Name Body Type Acclaim, LeBaron Sedan & Spirit AA Daytona AG Dynasty AC LeBaron Convertible/Coupe AJ
Dodge Dynasty LE 1991 - SELF-DIAGNOSTIC SYSTEM SYSTEM DIAGNOSIS
The self-diagnostic capabilities of this system, if properly utilized, can simplify testing. The Single Board Engine Controller (SBEC) monitors several different engine control system circuits.
If a problem is sensed with a monitored circuit, a fault code is stored in the SBEC, the CHECK ENGINE light illuminates and SBEC enters limp-in mode. In limp-in mode, SBEC compensates for component failure by substituting information from other sources. This allows vehicle operation until repairs can be made.
Once codes are known, refer to FAULT CODES listed in this article to determine the questionable circuit. Test circuits and repair or replace components as required. If problem is repaired or ceases to exist, the SBEC cancels that fault code after 50 ignition on/off cycles. To clear codes, refer to CLEARING CODES in this article.
A specific fault code results from a particular system failure. It is NOT necessarily the reason for that failure. The fault code does not condemn a specific component. The fault code calls out a probable malfunction area.
Dodge Dynasty LE 1991 - 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 using diagnostic (code) charts. If a sensor fails, SBEC will use a substitute value in its calculations, allowing engine operation in limp-in mode. In this condition, vehicle will run but driveability may be poor.
Dodge Dynasty LE 1991 - Intermittent Failures
Intermittent failures may cause CHECK ENGINE light to flicker or stay on until the intermittent fault goes away. However, the corresponding trouble code will be retained in SBEC memory. If related fault does not reoccur within a certain time frame, related trouble code will be erased from SBEC memory. Intermittent failures can be caused by faulty sensor, bad connector or wiring related problems. See INTERMITTENTS in TESTS W/O CODES article.
Dodge Dynasty LE 1991 - DIAGNOSTIC PROCEDURE
- ENTERING ON-BOARD DIAGNOSTICS to retrieve fault codes. If fault codes are NOT present and/or DRB-II (Diagnostic Readout Box-II) is used, proceed to one of the following tests:
- Go to NO START TEST 1A (NS-1A) 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 1A (DR-1A) chart if engine runs but has performance problems. Perform indicated VERIFICATION PROCEDURE chart after repairs. Ensure charts apply to engine being tested.
NOTE: When using trouble shooting charts for diagnosis, DO NOT skip any steps in chart or incorrect diagnosis may result.
Before proceeding with diagnosis, the following precautions must be followed:
- Vehicle must have a fully charged battery and functional charging system.
- Probe SBEC connector from pin side. DO NOT backprobe SBEC connector.
- 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 SBEC may result.
- DO NOT prolong testing of fuel injectors or engine may hydrostatically (liquid) lock.
- Always repair lowest fault code number (CHECK ENGINE light) or first fault displayed (DRB-II) first.
- Always perform verification procedure test after repairs are made.
- Always disconnect DRB-II after use.
- Always disconnect DRB-II before charging battery.
Dodge Dynasty LE 1991 - ENTERING ON-BOARD DIAGNOSTICS
NOTE: Manufacturer recommends using DRB-II (Diagnostic Readout Box-II) to diagnose the system. CHECK ENGINE light function can be used but has limited diagnostic usage.
Dodge Dynasty LE 1991 - Check Engine Light Diagnostic Mode
- Start engine (if possible). Move transmission shift lever through all positions, ending in Park. Turn A/C switch on, then off (if equipped).
- Turn engine off. Without starting engine again, turn ignition on, off, on, off and on. Record 2-digit fault codes as displayed by flashing CHECK ENGINE light.
- For example, Code 23 is displayed as flash, flash, 4-second pause, flash, flash, flash. After a slightly longer pause, other codes stored are displayed in numerical order.
- When CHECK ENGINE light begins to flash fault codes, it cannot be stopped. If you lose count, it will be necessary to start over. Code 55 indicates end of fault code display.
- - FAULT CODES table to translate trouble code number to a system fault description (DRB-II display). Once trouble area is identified, refer to NO START TEST 1A (NS-1A) or DRIVEABILITY TEST 1B (DR-1B) trouble shooting chart to diagnose problem. Use trouble shooting chart titles to find appropriate chart.
- As an example, a 3.0L engine starts and runs, but has a driveability problem. CHECK ENGINE light indicates a Code 14. - FAULT CODES table to translate trouble code number to a system fault description (DRB-II display).
- When system fault description (DRB-II display) is obtained, refer to DR-1B: DRB-II FAULT MESSAGES since vehicle has a driveability problem. Select fault message and corresponding test from table and proceed to appropriate chart.
Dodge Dynasty LE 1991 - DRB-II Diagnostic Mode
- Turn ignition off. Attach DRB-II to engine diagnostic connector. Connector is located in engine compartment, near SBEC.
- Start engine (if possible). With foot on brake, move transmission shift lever through all positions, ending in Park. Turn A/C switch on, then off (if equipped).
- Turn engine off. Without starting engine again, turn ignition on. Enter FUEL/IGN MENU. To enter FUEL/IGN MENU, see DRB-II TEST FUNCTIONS. At FUEL/IGN MENU, press "2" (READ FAULTS) key. Press ENTER key. After fault codes are accessed, refer to NO START TEST 1A (NS-1A) or DRIVEABILITY TEST 1A (DR-1A) for your engine.
- To erase faults while in this option go to next step. Press ATM key. At DRB-II display, press "2" (ERASE) key. DRB-II will display ERASE FAULTS ARE YOU SURE? (ENTER TO ERASE). Press ENTER key.
- When DRB-II is finished erasing fault codes, it will display FAULTS ERASED. This display will remain until ATM key is pressed. After ATM key is pressed, display will return to FUEL/IGN MENU screen.
Dodge Dynasty LE 1991 - DRB-II TEST FUNCTIONS
NOTE: DO NOT touch DRB-II keypad during DRB-II power-up sequence or an error message will result.
- In order to perform diagnostic tests using the DRB-II, the DRB-II must be in the FUEL/IGN MENU. At the FUEL/IGN MENU, fault codes and DRB-II test functions can be accessed.
- To reach FUEL/IGN MENU, turn ignition off. Attach DRB-II to engine diagnostic connector. Connector is located in engine compartment, near SBEC. Turn ignition switch to RUN position.
- All DRB-II character positions will illuminate and copyright information will appear on screen for a few seconds. If DRB-II screen is blank or any error messages appear, refer to DRB-II PROBLEMS & ERROR MESSAGES in this article.
- After a few seconds DRB-II menu will appear. At DRB-II menu, press "4" (SELECT SYSTEM) key. Press ENTER key. At SELECT SYSTEM menu, press "1" (ENGINE) key. Press ENTER key. DRB-II menu will appear indicating engine year, size, type of transmission and SBEC part number.
- After a few seconds AIR COND menu will appear. Press "1" (WITH A/C) or press "2" (WITHOUT A/C). DRB-II display will change to ENGINE SYSTEMS menu. At ENGINE SYSTEMS menu, press "1" (FUEL/IGNITION) key. Press ENTER key.
- Display will change to FUEL/IGN MENU. At FUEL/IGN menu of engine diagnostic program, specific test functions programmed into DRB-II can be performed. The following DRB-II modes can be accessed: SYSTEM TEST, READ FAULTS, STATE DISPLAYS, ACTUATOR TEST and ADJUSTMENTS.
Dodge Dynasty LE 1991 - System Test Mode
This function is not available in the engine diagnostics program.
Dodge Dynasty LE 1991 - Read Faults Mode
This function allows the user to read and erase fault codes. A fault counter will appear along with fault displayed on DRB-II. As an example, DRB-II will display 1 OF 2 FAULTS. SBEC will store up to 8 fault messages. Faults are numbered in reverse order of setting. The most recent fault to occur will be number one. Vehicles without air conditioning will always have A/C CLUTCH RELAY CKT (circuit) stored in memory. This fault will always be number one if vehicle is not equipped with A/C. If no fault messages are stored, DRB-II will display NO FAULTS DETECTED and start counter will show 0 STARTS SINCE ERS (Erased).
A start counter will appear below DRB-II fault counter display. Start counter counts the number of times vehicle is started since faults were last set, erased, or battery was disconnected. This helps determine if fault is intermittent. Memory space limits start counter to first 3 faults. Start counter of zero equals a hard fault. Start counter of more than zero indicates an intermittent fault. Start counter will count up to 255 starts. If no fault messages are stored, DRB-II will display NO FAULTS DETECTED and start counter will show 0 STARTS SINCE ERS (Erased).
Dodge Dynasty LE 1991 - State Display Mode
This function allows user to read states or values of a variety of sensors, inputs/outputs and components.
The SBEC can only recognize high and low states on switch circuits. SBEC cannot tell the difference between an open or short circuit or a defective switch. If DRB-II displays a change between INPUT HIGH and INPUT LOW, it can be assumed that the entire switch circuit to the SBEC is functioning.
Dodge Dynasty LE 1991 - Actuator Test Mode
This function allows the user to check for proper operation of output circuits or devices, which the SBEC cannot internally recognize. DRB-II allows SBEC to activate these outputs or devices, allowing an observer to verify proper operation.
Most of the tests available in this mode provide an audible or visual indication of device operation (click of relay contacts, spray fuel, etc.). With the exception of an intermittent condition, if a device functions properly during its test, it can be assumed that the device, wiring and its driver circuit are functioning properly.
Dodge Dynasty LE 1991 - Adjustments Mode
This function allows the user to erase fault codes. Function also allows user to reset Emission Maintenance Reminder (EMR) light and mileage (trucks only).
Dodge Dynasty LE 1991 - DRB-II Volt/Ohmmeter Mode
- To access volt/ohmmeter mode of DRB-II, connect Red volt/ohmmeter test lead to Red port, located on right top side of DRB-II.
NOTE: Because DRB-II is grounded through engine diagnostic connector, only one volt/ohmmeter test lead is required when using volt/ohmmeter option. DRB-II volt/ohmmeter should only be used when diagnostic flow charts require the use of this option. - To access voltmeter, press VOLT/OHM key once. DRB-II is now in voltmeter mode. Touch test probe to connector or wire to be measured. Read voltage on DRB-II display. When voltage testing is complete, press VOLT/OHM key 3 times to exit voltmeter mode.
- To access ohmmeter, press VOLT/OHM key twice. DRB-II is now in ohmmeter mode. Touch test probe to connector or wire to be measured. Read resistance to circuit ground on DRB-II display. When resistance testing is complete, press VOLT/OHM key twice to exit ohmmeter mode.
Dodge Dynasty LE 1991 - DRB-II Continuity Meter Mode
Press VOLT/OHM key 3 times. Display will read NO CONTINUITY. Touch test probe to connector or wire to be measured. Read continuity on DRB-II display. When continuity testing is complete, press VOLT/OHM key once to exit continuity meter mode.
Dodge Dynasty LE 1991 - Vehicles Tested Mode
- Vehicles tested mode is used to show what vehicles are covered by DRB-II cartridge. To access vehicles tested mode, turn ignition off. Attach DRB-II to engine diagnostic connector. Connector is located in engine compartment, near SBEC.
- Turn ignition switch to RUN position. All DRB-II character positions will illuminate and copyright information will appear on screen for a few seconds. After a few seconds DRB-II menu will appear.
- At DRB-II menu, press "1" (VEHICLES TESTED) key. Press ENTER key. DRB-II will display vehicles covered by cartridge. Screen will display for 5 seconds and return to DRB-II menu.
Dodge Dynasty LE 1991 - How To Use Mode
Enter DRB-II menu display. - steps 1) and 2) under VEHICLES TESTED MODE. At DRB-II menu, press "2" (HOW TO USE) key. Press ENTER key. A series of screens will be displayed explaining the use of DRB-II keys used to move through engine diagnostic program.
Dodge Dynasty LE 1991 - Configure Mode
- Configure option allows user to customize DRB-II display. For example, if metric system is more useful to use, simply select METRIC from the appropriate menu.
- All selections made under CONFIGURE option remain active until user changes selection. To enter configure mode, enter DRB-II menu display. - steps 1) and 2) under VEHICLES TESTED MODE. At DRB-II menu, press "3" (CONFIGURE) key. Press ENTER key. DRB-II will display CONFIGURE menu.
Dodge Dynasty LE 1991 - DRB-II PROBLEMS & ERROR MESSAGES Blank Message Screen
- Connect DRB-II to a different vehicle. If message screen is still blank, DRB-II or cable adapter are faulty. Substitute to find faulty component.
- If message screen is not blank, DRB-II and cable adapter are functioning properly. Inspect diagnostic connector for proper wire placement, damaged terminals or pushed out pins. Repair as necessary.
- If diagnostic connector is okay, using an ohmmeter, check resistance between Black/White or Black/Yellow wire and ground at engine diagnostic connector. If resistance is greater than 10 ohms, repair open in Black/White or Black/Yellow wire.
Dodge Dynasty LE 1991 - No Response Message
- Connect DRB-II to another vehicle. If DRB-II displays NO RESPONSE message again, DRB-II or cable adapter are faulty. Substitute to find faulty component. If message screen does not display NO RESPONSE, DRB-II and cable adapter are functioning properly. Go to next step.
- Turn ignition off. Disconnect DRB-II. Using an ohmmeter, check Pink or Black/Red wire for resistance between SBEC and engine diagnostic connectors. If resistance is more than 10 ohms, repair open in Pink or Black/Red wire.
- If resistance is less than 10 ohms, check Light Green/Orange or Black/Pink wire for resistance between SBEC and engine diagnostic connectors. If resistance is more than 10 ohms, repair open in Light Green/Orange or Black/Pink wire.
Dodge Dynasty LE 1991 - RAM Test Failure Message
Replace DRB-II.
Dodge Dynasty LE 1991 - Cartridge Error Message
Replace DRB-II cartridge.
Dodge Dynasty LE 1991 - Key Pad Test Failure Message
Power up DRB-II again with fingers off the keypad. If error message returns, replace DRB-II.
Dodge Dynasty LE 1991 - High Or Low Battery Message
Correct condition of vehicle battery and reconnect DRB-II.
Dodge Dynasty LE 1991 - SELF-DIAGNOSTICS FAULT CODES TABLE
Dodge Dynasty LE 1991 SELF-DIAGNOSTICS FAULT CODES
Code Display on DRB-II (1) Fault Condition 11 IGN REFERENCE SIGNAL No distributor reference signal pickup during cranking. 12 NUMBER OF KEY-ONS SINCE LAST FAULT or SINCE FAULTS WERE RELEASED Direct battery input to SBEC was disconnected within last 50 ignition key-ons 13 MAP PNEUMATIC SIGNAL or SLOW CHANGE IN MAP SIGNAL No difference in MAP sensor signal is detected. 13 NO CHANGE IN MAP FROM START TO RUN or MAP PNEUMATIC CHANGE No difference is detected between MAP reading & stored barometric pressure reading. 14 MAP VOLTAGE TOO LOW MAP sensor input less than minimum acceptable voltage. 14 MAP VOLTAGE TOO HIGH MAP sensor input more than maximum acceptable voltage. 15 VEHICLE SPEED SIGNAL No distance sensor signal detected with road load conditions. 17 (2) LOW ENGINE TEMP Coolant temp. stays below normal operating temp. during vehicle operation. 21 O2 SENSOR SIGNAL No rich or lean signal is detected from O2 sensor input. 21 O2 SENSOR SHORTED HI Oxygen sensor input voltage maintained above normal operating range. 22 COOLANT VOLTAGE LOW Coolant temp. sensor input below minimum acceptable voltage. 22 COOLANT VOLTAGE HIGH Coolant temp. sensor input above maximum acceptable voltage. 23 T/B TEMP VOLTAGE LOW Throttle body temp. sensor input below minimum acceptable voltage. 23 T/B TEMP VOLTAGE HI Throttle body temp. sensor input above maximum acceptable voltage. 23 CHARGE TEMP VOLT LOW Charge temp. sensor input below minimum acceptable voltage. 23 CHARGE TEMP VOLT HI Charge temp. sensor input above maximum acceptable voltage. 24 TPS VOLTAGE LOW TPS sensor output less than minimum acceptable voltage. 24 TPS VOLTAGE HIGH TPS sensor output more than maximum acceptable voltage. 25 AIS MOTOR CIRCUITS Shorted condition detected in one or more Auto Idle Speed control circuits. 26 INJECTOR NO. 1 PEAK CURRENT NOT REACHED High Resistance Condition Detected in Injector No. 1 Injector Bank Circuit 26 INJECTOR NO. 2 PEAK CURRENT NOT REACHED High Resistance Condition Detected in Injector No. 2 Injector Bank Circuit 26 INJECTOR NO. 3 PEAK CURRENT NOT REACHED High Resistance Condition Detected in Injector No. 3 Injector Bank Circuit 26 INJECTOR NO. 4 PEAK CURRENT NOT REACHED High Resistance Condition Detected in Injector No. 4 Injector Bank Circuit 27 INJ 1 CONTROL CIRCUIT INJ 1 injector bank output driver stage does not respond correctly to SBEC control signal. 27 INJ 2 CONTROL CIRCUIT INJ 2 injector bank output driver stage does not respond correctly to SBEC control signal. 27 INJ 3 CONTROL CIRCUIT INJ 3 injector bank output driver stage does not respond correctly to SBEC control signal. 27 INJ 4 CONTROL CIRCUIT INJ 4 injector bank output driver stage does not respond correctly to SBEC control signal. 31 PURGE SOLENOID CKT Open or shorted condition is detected in purge solenoid circuit. 32 EGR SOLENOID CIRCUIT Open or shorted condition is detected in EGR solenoid circuit. 32 EGR SYSTEM FAILURE SBEC did not detect required air/fuel change during diagnostic test 33 A/C CLUTCH RELAY CKT Open or shorted condition detected in A/C clutch relay circuit. 34 S/C SERVO SOLENOIDS Open or shorted condition detected in speed control vacuum or vent solenoid circuits. 35 RADIATOR FAN RELAY Open or shorted condition detected in radiator fan relay circuit. 36 WASTEGATE SOLENOID Open or shorted condition detected in turbocharger wastegate control solenoid circuit. 36 VNT SOLENOID #3 CKT Open or shorted condition detected in VNT solenoid No. 3 circuit. 37 PTU SOLENOID CIRCUIT Open or shorted condition detected in torque converter part throttle unlock solenoid circuit. 41 (3) ALTERNATOR FIELD CKT Open or shorted condition detected in alternator field circuit. 42 ASD RELAY CIRCUIT Open or shorted condition detected in ASD relay circuit. 42 NO ASD RELAY VOLTAGE SENSED AT SBEC No ASD Relay voltage sensed when ASD relay is energized. 42 Z1 VOLTAGE SENSE No Battery voltage sensed when ASD relay is energized. 43 Ign Coil No. 1 Primary Ckt Peak Primary Ckt Current Not Achieved With maximum Dwell Time 43 Ign Coil No. 2 Primary Ckt Peak Primary Ckt Current Not Achieved With maximum Dwell Time 43 Ign Coil No. 3 Primary Ckt Peak Primary Ckt Current Not Achieved With maximum Dwell Time 44 (3) BATTERY TEMP SENSOR OUT OF LIMITS Internal Controller Failure With Battery Temp. Sensor Out of Range 45 BOOST LIMIT EXCEEDED MAP reading above overboost limit detected during engine operation. 46 (3) BATTERY VOLTAGE HIGH Battery voltage sense input more than target charging voltage during engine operation. 47 (3) CHARGING OUTPUT LOW Battery voltage sense input less than target charging voltage During engine operation and no significant change in voltage detected during active test of alternator output. 51 LEAN F/A CONDITION or 02 SIGNAL STAYS BELOW CENTER O2 sensor input indicates lean air/fuel ratio during engine operation. 52 RICH F/A CONDITION or 02 SIGNAL STAYS ABOVE CENTER O2 sensor input indicates rich air/fuel ratio during engine operation. 53 INTERNAL SELF-TEST SBEC detects internal failure. 53 INTERNAL SBEC FAILURE or CONTROLLER FAILURE SPI COMM No Internal Communication Between Coprocessors 54 NO SYNC PICK-UP SIGNAL No high data rate detected during engine rotation. 55 (3) N/A Completion of fault code display by check engine light. 61 BARO READ SOLENOID Open or shorted condition detected in baro read solenoid circuit. 62 EMR MILES NOT STORED Unsuccessful attempt to update EMR mileage in SBEC EEPROM (trucks only). 63 EEPROM WRITE DENIED SBEC FAILURE Unsuccessful attempt to write to an EEPROM location by SBEC. 64 VNT SOLENOID #1 CKT Open or shorted condition detected in VNT solenoid No. 1 circuit. 65 VNT SOLENOID #2 CKT Open or shorted condition detected in VNT solenoid No. 2 circuit. 67 VNT A-SIDE CONTROL MAP reading above boost goal for an extended time period. 77 SPEED CONTROL POWER RELAY CIRCUIT Open or Short Detected in the Speed Control Power Relay Circuit
(1) Actual Message Displayed on DRB-II May Vary Between Vehicles
(2) Testing information for Code 17 is not provided by manufacturer. Check thermostat operation.
(3) If Code Is Displayed, Charging System Malfunction Exists. See Appropriate Alternators & Regulators Article in ELECTRICAL Section.
Dodge Dynasty LE 1991 - EMISSION MAINTENANCE REMINDER (EMR) MILEAGE TRANSFER
NOTE: EMR information applies only to trucks, but will be referred to in flow charts.
- When SBEC is replaced, vehicle mileage must be copied from odometer to replacement SBEC memory. Transfer of vehicle mileage will enable new SBEC to operate EMR light properly.
- Using DRB-II, enter FUEL/IGN MENU. See DRB-II TEST FUNCTIONS in this article. At FUEL/IGN menu, press "5" (ADJUSTMENTS) key. Press ENTER key. At ADJUSTMENTS menu, press "3" (EMR MEMORY CHECK) key. Press ENTER key. DRB-II display will read EMR MEMORY CHECK ARE YOU SURE? ENTER TO CONTINUE.
- Press ENTER key. DRB-II will display IS INSTRUMENT PANEL MILEAGE BETWEEN 9953 AND 10051? If vehicle mileage is within specification, EMR memory check is complete. Press YES key. If vehicle mileage is not within specification, go to next step.
- Press NO key. DRB-II will display ENTER MILEAGE SHOWN ON INSTRUMENT PANEL, USE ENTER KEY TO END. Enter vehicle mileage. DO NOT enter tenths. When correct vehicle mileage is entered, press ENTER key.
- DRB-II will ask for verification of mileage entry. If mileage entry was accurate, press ENTER key. DRB-II will display EMR MEMORY CHECK TEST COMPLETE. Vehicle must travel at least 8 miles for reset to occur.
Dodge Dynasty LE 1991 - EMISSION MAINTENANCE REMINDER (EMR) LIGHT RESET PROCEDURE
NOTE: EMR information applies only to trucks, but will be referred to in flow charts.
- The Emission Maintenance Reminder (EMR) light is designed to be a reminder to service the vehicle emissions control system. It is not an emissions warning system, only a reminder to perform emissions servicing.
- The components to be serviced include PCV valve, oxygen sensor and some vacuum-operated components. EMR light will illuminate after a predetermined mileage.
- Using DRB-II, enter FUEL/IGN MENU. See DRB-II TEST FUNCTIONS in this article. At FUEL/IGN menu, press "5" (ADJUSTMENTS) key. Press ENTER key.
- At ADJUSTMENTS menu, press "3" (EMR MEMORY CHECK) key. Press ENTER key. Press F1 or F2 key until display reads RESET EMR LIGHT. Press YES key.
- Display will read RESET EMR LIGHT ARE YOU SURE? YES, NO. Press YES key. When DRB-II is finished resetting EMR light, DRB-II display will read EMR LIGHT RESET.
Dodge Dynasty LE 1991 - CLEARING CODES
NOTE: Fault codes can also be cleared in READ FAULTS option of DRB-II. To ensure that all faults are read, it is advisable to use READ FAULTS option to erase fault codes. See DRB-II DIAGNOSTIC MODE under ENTERING ON-BOARD DIAGNOSTICS in this article.
- If DRB-II is not available, go to step 3). If DRB-II is available, enter FUEL/IGN MENU. See DRB-II TEST FUNCTIONS in this article. At FUEL/IGN menu, press "5" (ADJUSTMENTS) key. Press ENTER key. At ADJUSTMENTS menu, press "1" (ERASE FAULTS) key. Press ENTER key.
- DRB-II will display ERASE FAULTS ARE YOU SURE? (ENTER TO ERASE). Press ENTER key. When DRB-II is finished erasing fault codes, screen will display FAULTS ERASED.
- If DRB-II is not available, fault codes may be cleared by disconnecting negative battery cable for at least 15 seconds, allowing SBEC to clear fault codes.
Dodge Dynasty LE 1991 - SUMMARY
If no hard fault codes or only pass codes are present, driveability symptoms exist or intermittent codes exist, proceed to TESTS W/O CODES article for diagnosis by symptom (i.e. ROUGH IDLE, NO START, etc.) or intermittent diagnostic procedures.
Dodge Dynasty LE 1991 - NO-START TESTS NO START TESTS NS-1A TO NS-13A
NOTE: The Following Flow Charts and Circuit Diagrams Are Courtesy of Chrysler Motors.
Dodge Dynasty LE 1991 - NS-1A: CHECKING FOR IGNITION SPARK & POWER FEED TO COIL
Dodge Dynasty LE 1991 - NS-2A: CHECKING TPS, POWER TO SBEC & MAP SENSOR, THEFT ALARM STATUS & FUEL PRESSURE
Dodge Dynasty LE 1991 - NS-3A: CHECKING FOR WET SPARK PLUGS, VALVE & IGNITION TIMING
Dodge Dynasty LE 1991 - NS-3B: CHECKING VALVE TIMING & COMPRESSION
Fig. 12: Dodge Dynasty LE 1991 - Component Locations - Test NS-3B, Valve Timing & Compression
Dodge Dynasty LE 1991 - NS-4A: CHECKING FUEL FILTER, FUEL PUMP, FUEL PRESSURE & POWER TO FUEL PUMP
Dodge Dynasty LE 1991 - NS-4B: CHECKING FUEL RETURN LINES & PRESSURE REGULATOR
Dodge Dynasty LE 1991 - NS-4C: CHECKING FUEL PUMP & POWER TO FUEL PUMP
Dodge Dynasty LE 1991 - NS-5A: CHECKING FOR DEFECTIVE COIL OR CONTROL CIRCUITRY
Dodge Dynasty LE 1991 - NS-6A: CHECKING SYSTEM FOR FAULTS
Fig. 23: Dodge Dynasty LE 1991 - Component Locations - Test NS-6A, Checking System For Faults
Dodge Dynasty LE 1991 - NS-7A: CHECKING POWER CIRCUIT TO INJECTORS & IGNITION COIL
Dodge Dynasty LE 1991 - NS-8A: CHECKING SYSTEM PWR & GND & OPERATION OF TPS, MAP SENSOR & SBEC
Dodge Dynasty LE 1991 - NS-8B: CHECKING SYSTEM PWR & GND & OPERATION OF TPS, MAP SENSOR & SBEC
Dodge Dynasty LE 1991 - NS-8C: CHECKING SYSTEM POWER & GROUND
Fig. 32: Dodge Dynasty LE 1991 - Component Locations - Test NS-8C, Schematic, System Power & Ground
Fig. 33: Dodge Dynasty LE 1991 - Component Locations - Test NS-8C, (1 of 2) System Power & Ground
Fig. 34: Dodge Dynasty LE 1991 - Component Locations - Test NS-8C, (2 of 2) System Power & Ground
Dodge Dynasty LE 1991 - NS-9A: NO REFERENCE SIGNAL (DTC 11)
Dodge Dynasty LE 1991 - NS-9B: NO REFERENCE SIGNAL
Dodge Dynasty LE 1991 - NS-9C: NO REFERENCE SIGNAL
Fig. 42: Dodge Dynasty LE 1991 - Component Locations - Test NS-9C, Code 11, No Reference Signal
Dodge Dynasty LE 1991 - NS-10A: AUTO SHUTDOWN (ASD) RELAY CIRCUIT (DTC 42)
Dodge Dynasty LE 1991 - NS-11A: NO AUTO SHUTDOWN (ASD) RELAY VOLTAGE SENSED AT SBEC (DTC 42)
Dodge Dynasty LE 1991 - NS-12A: CHECKING IDLE SPEED MOTOR OPERATION
Dodge Dynasty LE 1991 - NS-12B: CHECKING IDLE SPEED MOTOR OPERATION
Fig. 51: Dodge Dynasty LE 1991 - Component Locations - Test NS-12B, Idle Speed Motor Operation
Dodge Dynasty LE 1991 - NS-12C: CHECKING IDLE SPEED MOTOR OPERATION
Fig. 52: Dodge Dynasty LE 1991 - Component Locations - Test NS-12C, Idle Speed Motor Operation
Dodge Dynasty LE 1991 - NS-12D: CHECKING IDLE SPEED MOTOR OPERATION
Fig. 53: Dodge Dynasty LE 1991 - Component Locations - Test NS-12D, Idle Speed Motor Operation
Dodge Dynasty LE 1991 - NS-12E: CHECKING IDLE SPEED MOTOR OPERATION
Fig. 54: Dodge Dynasty LE 1991 - Component Locations - Test NS-12E, Idle Speed Motor Operation
Dodge Dynasty LE 1991 - NS-13A: PERFORMING START & STALL MECHANICAL TEST
At this point in the start-and-stall test procedure, if it has been determined that all engine control systems are operating as designed and are not the cause of a start-and-stall problem, the following additional items should be checked as possible causes:
- Check if any TECHNICAL SERVICE BULLETINS (TSBs) apply to vehicle.
- Check engine compression.
- Check for exhaust system restriction.
- Check camshaft and crankshaft sprockets.
- Check valve timing.
- Check torque converter stall speed.
- Check secondary ignition circuit for abnormal scope pattern.
- Check for fuel contamination.
- Ensure PCV system is functioning properly.
- Ensure injector control wire is connected to correct fuel injector.
Dodge Dynasty LE 1991 - DRIVEABILITY TESTS DR-1A TO DR-47A
NOTE: The Following Flow Charts and Circuit Diagrams Are Courtesy of Chrysler Motors.
Dodge Dynasty LE 1991 - DR-1A: CHECKING SYSTEM FOR FAULTS
NOTE: Battery must be fully charged and at rated capacity before performing any driveability test procedure. If vehicle starts and stalls repeatedly, perform test NS-2A: CHECKING TPS, POWER TO SBEC & MAP SENSOR, THEFT ALARM STATUS & FUEL PRESSURE.
- Connect DRB-II to engine diagnostic connector. Read fault messages. If DRB-II displays fault messages, go to DR-1B: DRB-II FAULT MESSAGES. Go to step 9) if DRB-II displays ENGINE COLD TOO LONG. If DRB-II displays INTERNAL CONTROLLER FAILURE, go to step 8). If DRB-II displays NO FAULTS, go to next step.
- If NO FAULTS message appears on DRB-II display, start engine. Allow engine to reach normal operating temperature. Set engine speed manually (DO NOT use DRB-II to set speed) to 2000 RPM for about 10 seconds. Return engine to idle.
- If vehicle is not equipped with A/C, go to step 5). If vehicle is equipped with A/C, put A/C fan on low speed. Turn A/C on. If engine stalls when A/C is turned on, turn ignition off.
- Disconnect engine controller connector. Inspect engine controller connector for corroded or loose terminals. Repair as required. Turn ignition on. Put DRB-II in voltmeter mode.
- Probe engine controller connector Dark/Blue wire at cavity No. 9. If voltage is less than 10 volts, repair Dark/Blue wire. If voltage is more than 10 volts, replace engine controller. Perform test VER-2: VERIFICATION PROCEDURE 2.
- If vehicle is equipped with A/T, apply brakes and shift through all gears. Return shift lever to Park. Read fault messages displayed on DRB-II.
- If DRB-II still shows NO FAULTS, check TECHNICAL SERVICE BULLETINS (TSB's) for any pertinent information relating to driveability problems. If a TSB exists, perform corrective action. If driveability problem continues after performing TSB procedure or if no TSB information is found, perform test DR-33A: CHECKING SECONDARY IGNITION & TIMING.
- If INTERNAL CONTROLLER FAILURE message appears on DRB-II display, replace engine controller. Perform test VER-2: VERIFICATION PROCEDURE 2.
- If ENGINE COLD TOO LONG message appears on DRB-II display, check engine cooling system. Repair as required. Perform test VER-3: VERIFICATION PROCEDURE 3.
Dodge Dynasty LE 1991 - DR-1B: DRB-II FAULT MESSAGES
Using the DRB-II FAULT MESSAGES table, select the fault message and corresponding test. Correct all hard fault messages before proceeding to intermittent fault messages.
Dodge Dynasty LE 1991 DRB-II FAULT MESSAGES
DRB-II Message HardFault (1) (2) Intermittent Fault A/C Clutch Relay Circuit (3) DR-26A DR-44A A/C Clutch Relay Circuit (4) DR-24A DR-44A A/C Clutch Relay Circuit (5) DR-25A DR-44A A/C Clutch Relay Circuit (6) DR-23A DR-44A Automatic Idle Motor Circuits DR-13A DR-46A Controller Failure EEPROM Write Denied DR-31A DR-32A Controller Failure EMR Miles Not Stored DR-31A DR-32A Coolant Temp. Sensor Voltage Too High DR-9A DR-45A Coolant Temp. Sensor Voltage Too Low DR-10A DR-45A EGR Solenoid Circuit DR-21A DR-44A EGR System Failure DR-22A DR-22A Injector No. 1 Control Circuit DR-15A DR-47A Injector No. 2 Control Circuit DR-17A DR-47A Injector No. 3 Control Circuit DR-19A DR-47A Injector No. 1 Peak Current Not Reached DR-14A DR-47A Injector No. 2 Peak Current Not Reached DR-16A DR-47A Injector No. 3 Peak Current Not Reached DR-18A DR-47A MAP Voltage Too High DR-5A DR-45A MAP Voltage Too Low DR-4A DR-45A No ASD Relay Voltage Sense At Controller DR-30A DR-30A No Change In MAP From Start To Run DR-3A DR-45B No Sync Pick-Up Signal DR-31A DR-31A No Vehicle Speed Signal DR-6A DR-6A O2 Signal Shorted To Voltage DR-8A DR-8A O2 Signal Stays Above Center (Rich) DR-33A DR-33A O2 Signal Stays At Center DR-7A DR-7A O2 Signal Stays Below Center (Lean) DR-33A DR-33A Purge Solenoid Circuit DR-20A DR-44A Radiator Fan Relay Circuit (3) (6) DR-27A DR-44A Radiator Fan Relay Circuit (4) DR-28A DR-44A Radiator Fan Relay Circuit (5) DR-29A DR-44A Slow Change In Idle MAP Signal DR-2A DR-45B Throttle Position Sensor Voltage High DR-11A DR-45A Throttle Position Sensor Voltage Low DR-12A DR-45A
(1) Key counter is "0".
(2) Key counter is more than "0".
(3) AA body.
(4) AC body.
(5) AG & AJ bodies.
(6) AS body.
Dodge Dynasty LE 1991 - DR-2A: SLOW CHANGE IN MAP SIGNAL (DTC 13)
Dodge Dynasty LE 1991 - DR-3A: NO CHANGE IN MAP FROM START TO RUN (DTC 13)
Dodge Dynasty LE 1991 - DR-4A: MAP VOLTAGE TOO LOW (DTC 14)
Fig. 60: Dodge Dynasty LE 1991 - Component Locations - Test DR-4A Code 14, MAP Voltage Too Low
Dodge Dynasty LE 1991 - DR-5A: MAP VOLTAGE TOO HIGH (DTC 14)
Dodge Dynasty LE 1991 - DR-6A: NO VEHICLE SPEED SIGNAL (DTC 15)
Dodge Dynasty LE 1991 - DR-7A: OXYGEN SENSOR (O2) SIGNAL STAYS AT CENTER (DTC 21)
Dodge Dynasty LE 1991 - DR-8A: OXYGEN SENSOR (O2) SHORTED TO VOLTAGE (DTC 21)
Dodge Dynasty LE 1991 - DR-9A: COOLANT TEMPERATURE SENSOR VOLTAGE TOO HIGH (DTC 22)
Dodge Dynasty LE 1991 - DR-10A: COOLANT TEMPERATURE SENSOR VOLTAGE TOO LOW (DTC 22)
Dodge Dynasty LE 1991 - DR-11A: THROTTLE POSITION SENSOR (TPS) VOLTAGE HIGH (DTC 24)
Dodge Dynasty LE 1991 - DR-12A: THROTTLE POSITION SENSOR (TPS) VOLTAGE LOW (DTC 24)
Fig. 83: Dodge Dynasty LE 1991 - Component Locations - Test DR-12A Code 24, TPS Voltage Low
Dodge Dynasty LE 1991 - DR-13A: AUTOMATIC IDLE MOTOR CIRCUITS (DTC 25)
Dodge Dynasty LE 1991 - DR-14A: INJECTOR NO. 1 PEAK CURRENT NOT REACHED (DTC 26)
Dodge Dynasty LE 1991 - DR-15A: INJECTOR NO. 1 CONTROL CIRCUIT (DTC 27)
Dodge Dynasty LE 1991 - DR-15B: INJECTOR NO. 1 CONTROL CIRCUIT
Dodge Dynasty LE 1991 - DR-15C: INJECTOR NO. 1 CONTROL CIRCUIT
Dodge Dynasty LE 1991 - DR-15D: INJECTOR NO. 1 CONTROL CIRCUIT
Dodge Dynasty LE 1991 - DR-16A: INJECTOR NO. 2 PEAK CURRENT NOT REACHED (DTC 26)
Dodge Dynasty LE 1991 - DR-17A: INJECTOR NO. 2 CONTROL CIRCUIT (DTC 27)
Dodge Dynasty LE 1991 - DR-17B: INJECTOR NO. 2 CONTROL CIRCUIT
Dodge Dynasty LE 1991 - DR-17C: INJECTOR NO. 2 CONTROL CIRCUIT
Dodge Dynasty LE 1991 - DR-17D: INJECTOR NO. 2 CONTROL CIRCUIT
Dodge Dynasty LE 1991 - DR-18A: INJECTOR NO. 3 PEAK CURRENT NOT REACHED (DTC 26)
Dodge Dynasty LE 1991 - DR-19A: INJECTOR NO. 3 CONTROL CIRCUIT (DTC 27)
Dodge Dynasty LE 1991 - DR-19B: INJECTOR NO. 3 CONTROL CIRCUIT
Dodge Dynasty LE 1991 - DR-19C: INJECTOR NO. 3 CONTROL CIRCUIT
Dodge Dynasty LE 1991 - DR-19D: INJECTOR NO. 3 CONTROL CIRCUIT
Dodge Dynasty LE 1991 - DR-20A: PURGE SOLENOID CIRCUIT (DTC 31)
Dodge Dynasty LE 1991 - DR-21A: EGR SOLENOID CIRCUIT (DTC 32)
Dodge Dynasty LE 1991 - DR-22A: EGR SYSTEM FAILURE (DTC 32)
Dodge Dynasty LE 1991 - DR-23A: A/C CLUTCH RELAY CIRCUIT (DTC 33)
Dodge Dynasty LE 1991 - DR-24A: A/C CLUTCH RELAY CIRCUIT (DTC 33)
Dodge Dynasty LE 1991 - DR-25A: A/C CLUTCH RELAY CIRCUIT (DTC 33)
Dodge Dynasty LE 1991 - DR-25B: A/C CLUTCH RELAY CIRCUIT
Dodge Dynasty LE 1991 - DR-26A: A/C CLUTCH RELAY CIRCUIT (DTC 33)
Dodge Dynasty LE 1991 - DR-27A: RADIATOR FAN RELAY CIRCUIT (DTC 35)
Dodge Dynasty LE 1991 - DR-28A: RADIATOR FAN RELAY CIRCUIT (DTC 35)
Dodge Dynasty LE 1991 - DR-29A: RADIATOR FAN RELAY CIRCUIT (DTC 35)
Dodge Dynasty LE 1991 - DR-30A: NO AUTO SHUTDOWN (ASD) RELAY VOLTAGE SENSE AT SBEC (DTC 42)
Dodge Dynasty LE 1991 - DR-31A: NO SYNC PICK-UP SIGNAL (DTC 54)
Dodge Dynasty LE 1991 - DR-31B: NO SYNC PICK-UP SIGNAL
Fig. 167: Dodge Dynasty LE 1991 - Component Locations - Test DR-31B Code 54, No Sync Pick-Up Signal
Dodge Dynasty LE 1991 - DR-32A: SBEC FAILURE EMR MILES NOT STORED & EEPROM WRITE DENIED (DTC 63)
Dodge Dynasty LE 1991 - DR-33A: CHECKING SECONDARY IGNITION & TIMING
Dodge Dynasty LE 1991 - DR-34A: CHECKING FUEL PRESSURE
Fig. 172: Dodge Dynasty LE 1991 - Component Locations - Test DR-34A, (1 of 2) Fuel Pressure
Fig. 173: Dodge Dynasty LE 1991 - Component Locations - Test DR-34A, (2 of 2) Fuel Pressure
Dodge Dynasty LE 1991 - DR-34B: CHECKING FUEL PRESSURE
Fig. 174: Dodge Dynasty LE 1991 - Component Locations - Test DR-34B, (1 of 2) Fuel Pressure
Fig. 175: Dodge Dynasty LE 1991 - Component Locations - Test DR-34B, (2 of 2) Fuel Pressure
Dodge Dynasty LE 1991 - DR-35A: CHECKING COOLANT & THROTTLE POSITION SENSOR (TPS) CALIBRATION
Dodge Dynasty LE 1991 - DR-36A: CHECKING MAP SENSOR CALIBRATION
Fig. 178: Dodge Dynasty LE 1991 - Component Locations - Test DR-36A, (1 of 2) MAP Sensor Calibration
Fig. 179: Dodge Dynasty LE 1991 - Component Locations - Test DR-36A, (2 of 2) MAP Sensor Calibration
Dodge Dynasty LE 1991 - DR-37A: CHECKING OXYGEN SENSOR SWITCHING
Fig. 180: Dodge Dynasty LE 1991 - Component Locations - Test DR-37A, Oxygen Sensor Switching
Dodge Dynasty LE 1991 - DR-37B: CHECKING OXYGEN SENSOR SWITCHING
Dodge Dynasty LE 1991 - DR-38A: CHECKING IDLE SPEED MOTOR OPERATION
Dodge Dynasty LE 1991 - DR-38B: CHECKING IDLE SPEED MOTOR OPERATION
Fig. 186: Dodge Dynasty LE 1991 - Component Locations - Test DR-38B, Idle Speed Motor Operation
Dodge Dynasty LE 1991 - DR-38C: CHECKING IDLE SPEED MOTOR OPERATION
Fig. 187: Dodge Dynasty LE 1991 - Component Locations - Test DR-38C, Idle Speed Motor Operation
Dodge Dynasty LE 1991 - DR-38D: CHECKING IDLE SPEED MOTOR OPERATION
Fig. 188: Dodge Dynasty LE 1991 - Component Locations - Test DR-38D, Idle Speed Motor Operation
Dodge Dynasty LE 1991 - DR-38E: CHECKING IDLE SPEED MOTOR OPERATION
Fig. 189: Dodge Dynasty LE 1991 - Component Locations - Test DR-38E, Idle Speed Motor Operation
Dodge Dynasty LE 1991 - DR-39A: CHECKING PARK/NEUTRAL SWITCH INPUT
Dodge Dynasty LE 1991 - DR-40A: CHECKING SBEC GROUNDS & POWER CIRCUITS
Dodge Dynasty LE 1991 - DR-41A: CHECKING ENGINE VACUUM
Fig. 196: Dodge Dynasty LE 1991 - Component Locations - Test DR-41A, Engine Vacuum
Dodge Dynasty LE 1991 - DR-42A: CHECKING MINIMUM IDLE AIRFLOW
Fig. 197: Dodge Dynasty LE 1991 - Component Locations - Test DR-42A, (1 of 2) Minimum Idle Airflow
Fig. 198: Dodge Dynasty LE 1991 - Component Locations - Test DR-42A, (2 of 2) Minimum Idle Airflow
Dodge Dynasty LE 1991 - DR-43A: PERFORMING NO FAULT CODE MECHANICAL TEST
At this point in the driveability test procedure, if it has been determined that all engine control systems are operating as designed and are not the cause of the driveability problem, check the following additional items for possible causes:
- Check valve timing.
- Check torque converter stall speed.
- Check engine compression.
- Check camshaft and crankshaft sprockets.
- Check for internal power brake booster vacuum leaks.
- Check for fuel contamination.
- Check for exhaust system restriction.
- Ensure injectors are not plugged or restricted.
- Ensure injector control wire is connected to correct injector.
- Ensure engine vacuum is at least 13 in. Hg.
- Ensure PCV system is functioning properly.
Dodge Dynasty LE 1991 - DR-44A: INTERMITTENT TEST FOR SOLENOIDS & RELAYS
Dodge Dynasty LE 1991 - DR-45A: INTERMITTENT TEST FOR VOLTAGE SENSOR
Dodge Dynasty LE 1991 - DR-45B: INTERMITTENT TEST FOR MAP SENSOR SIGNAL CHANGE
Dodge Dynasty LE 1991 - DR-46A: INTERMITTENT TEST FOR IDLE MOTOR CIRCUITS
Dodge Dynasty LE 1991 - DR-47A: INTERMITTENT TEST FOR IDLE MOTOR CIRCUITS
Dodge Dynasty LE 1991 - VERIFICATION PROCEDURES VER-1 TO VER-3 VER-1: VERIFICATION PROCEDURE 1
- Inspect vehicle to ensure all components are connected. Reassemble and reconnect components as necessary. Attempt to start engine. If engine does not start, return to test NS-1A: CHECKING FOR IGNITION SPARK & POWER FEED TO COIL.
- If engine starts and engine controller has been changed, go to next step. If engine starts and engine controller has not been changed, connect DRB-II to engine diagnostic connector and erase faults. Repair is now complete.
- If vehicle is equipped with factory theft alarm system, start engine at least 20 times to activate theft alarm system. If vehicle is an AS or AN body, write EMR mileage into new engine controller. Repair is now complete.
Dodge Dynasty LE 1991 - VER-2: VERIFICATION PROCEDURE 2
- If test VER-3: VERIFICATION PROCEDURE 3 has been performed previously, perform test VER-3 again. Inspect vehicle to ensure all engine components are connected. Reassemble and reconnect components as necessary.
- If another fault exists that has not been corrected, return to DR-1B: DRB-II FAULT MESSAGES and follow path specified by other fault. If engine controller has been replaced and vehicle is equipped with factory theft alarm system, start engine at least 20 times to activate theft alarm system. If vehicle is an AS or AN body, write EMR mileage into new engine controller.
- Connect DRB-II to engine diagnostic connector and erase faults. Ensure no other faults are present. To ensure no other faults are present, start engine. Allow engine to reach normal operating temperature. Increase engine speed to 2000 RPM for about 10 seconds. Return engine to idle.
- If vehicle is equipped with A/T, apply brakes and cycle through all transmission gear positions. Place gear selector in Park. If vehicle is equipped with A/C, turn A/C on. Set blower speed to LOW.
- Turn engine off. Start engine. Allow engine to idle for about 2 minutes. Turn engine off. Using DRB-II, check for fault messages. If NO FAULT message appears on DRB-II display, test is complete.
- If repaired fault resets or another fault sets, check TECHNICAL SERVICE BULLETINS (TSBs) for any pertinent information relating to driveability problem. If a TSB exists, perform corrective action. If another fault sets, return to DR-1B: DRB-II FAULT MESSAGES.
Dodge Dynasty LE 1991 - VER-3: VERIFICATION PROCEDURE 3
- Inspect vehicle to ensure all engine components are connected. Reassemble and reconnect components as necessary. If another fault is present that has not been corrected, return to DR-1B: DRB-II FAULT MESSAGES and follow path specified by other fault.
- If engine controller has been changed and vehicle is equipped with factory theft alarm system, start engine at least 20 times to activate theft alarm system. If vehicle is an AS or AN body, write EMR mileage into new engine controller.
- Connect DRB-II to engine diagnostic connector. Erase fault messages. Disconnect DRB-II. Ensure no other fault messages are present. To ensure no other fault messages are present, start engine. If vehicle is equipped with A/C, turn A/C on. Set blower speed to LOW.
- Drive vehicle for about 5 minutes. During this time, attain a speed above 40 MPH or more. Ensure transmission shifts through all gears. Upon completion of road test, turn engine off.
- Start engine. Allow engine to idle for about 2 minutes. Turn engine off. Connect DRB-II to engine diagnostic connector. Using DRB-II, check for fault messages. If no fault messages are present, test is complete.
- If repaired fault message resets or another fault message sets, check TECHNICAL SERVICE BULLETINS (TSBs) for any pertinent information relating to driveability problems. If a TSB exists, perform corrective action. If another fault sets, return to DR-1B: DRB-II FAULT MESSAGES.