Engine - No Start/Limp In Mode/Misfire/DTC's Set
NUMBER: 18-014-02GROUP: Vehicle Performance
DATE: Apr. 22, 2002
SUBJECT:
Transaxle Limp-In, Engine Misfire, Engine No-Start
OVERVIEW:
This bulletin involves diagnosing a transaxle solenoid and/or ignition coil issue, and replacing the Powertrain Control Module (PCM) if necessary.
MODELS:
2002 (LH) Concorde/Intrepid/300M
NOTE:
THIS BULLETIN APPLIES TO VEHICLES BUILT BEFORE JANUARY 28, 2002 (MDH 0128XX).
SYMPTOM/CONDITION:
Vehicle may exhibit one or all of the following symptoms:
^ The transaxle is in limp-in mode with Diagnostic Trouble Codes (DTC) P0750, P0755, P0760, P0765, Solenoid Continuity Errors.
^ The vehicle is a no-start (cranks but will not start), or engine misfire, and/or DTC P0351, P0352, P0353, P0354, P0355, P0356, Ignition Coil Primary Circuit Fault.
DIAGNOSIS:
If Diagnostic Trouble Codes (DTC's) are present other than those listed above, record them on the repair order and repair as necessary before proceeding further with this bulletin. If the condition(s)/DTC's listed are present or can be duplicated, perform the Repair Procedure.
REPAIR PROCEDURE:
NOTE:
WHENEVER A PCM IS REPLACED OR REPROGRAMMED, THE SOFTWARE MUST BE VERIFIED AS HAVING THE LATEST REVISION LEVEL AND THE PINION FACTOR MUST BE SET.
NOTE:
THIS REPAIR PROCEDURE IS DIVIDED INTO TWO PROCEDURES DEPENDING ON THE VEHICLE SYMPTOMS.
Transaxle Limp-In/DTC P0750, P0755, P0760, P0765
1. Record "EVENT DATA" for the corresponding DTC stored in memory. Note the specific operating conditions for
^ Trans sump temp
^ Engine rpm
^ Input (turbine) rpm
^ Output rpm
^ Throttle angle
^ PRNDL position
^ In gear code
^ Last shift or shift in progress
^ Coolant temperature
Retain this information it will be used in the verification process later.
NOTE:
"EVENT DATA" INFORMATION CAN BE FOUND ON MDS2(R) BULLETIN # 02001 DATED DECEMBER 18, 2001 OR THE JANUARY 2002 MTSC.
2. Replace the PCM with the part number (or later version) that is currently on the vehicle as described on page 8E-28 of the 2002 Concorde/Intrepid/300M Service Manual (Publication No. 81-270-02027).
3. Start the vehicle and shift the transmission through the gears taking appropriate cautions. Verify hat the DTC(s) above is gone with the new PCM. Note, a hard fault due to a solenoid or an intermittent fault due to wiring may still be present. Repair as necessary before continuing with this procedure.
4. If a hard fault is not present, ride check to verify the fault condition has been corrected. Drive the vehicle in the operating condition specifically captured in the "EVENT DATA" from item 1 above to verify vehicle is fixed. If a DTC does not occur replacing the PCM has fixed the vehicle.
Engine Misfire, No-Start, DTC P0351, P0352, P0353, P0354, P0355, P0356
1. Replace the PCM with the part number (or later version) that is currently on the vehicle as described on page 8E-28 of the 2002 Concorde/Intrepid/300M Service Manual (Publication No. 81-270-02027).
2. Clear all DTC's. Measure suspect ignition coil resistance (ohmmeter must be able to read accurately between 0 and 1 ohm). Good coils will be 0.4 ohms to 1.0 ohms. If ohmmeter cannot read accurately, then start engine and look for fault codes P0351 - P0356. If no codes then the coil(s) is (are) good. Replace coil(s) if resistance is out of limits or codes are present.
3. Replace spark plug(s) on suspected cylinders.
4. Check catalytic converter by clearing all fault codes (even if done previously), start and warm up engine and road test at 20-50 mph for at least 2 minutes. Verify adaptive numerator is learned (54.1 release) and misfire monitor is enabled. Make sure catalyst monitor has completed at least one good trip. Check for MIL illumination and fault codes before returning vehicle to customer.
POLICY:
Reimbursable within the provisions of the warranty.
TIME ALLOWANCE
FAILURE CODE