Mystique V6-153 2.5L DOHC VIN L SFI (1999)
PROM - Programmable Read Only Memory: All Technical Service Bulletins
PCM - MIL ON/DTC's P0351, P0352, P0353 Set
Article No.
99-21-7
10/18/99
^
MALFUNCTION INDICATOR LAMP (MIL) - MIL
ILLUMINATED WITH DIAGNOSTIC TROUBLE
CODES (DTCS) P0351, P0352 AND/OR P0353
STORED IN MEMORY
^
LAMP - MALFUNCTION INDICATOR LAMP (MIL)
ILLUMINATED WITH DIAGNOSTIC TROUBLE
CODES (DTCS) P0351, P0352 AND/OR P0353
STORED IN MEMORY
FORD:
1999 CONTOUR
MERCURY:
1999 COUGAR, MYSTIQUE
ISSUE
The check engine light may illuminate with one or more Ignition Coil Diagnostic Trouble Codes (DTCs) that may include P0351, P0352 and/or P0353
with no associated Coil On Plug issues. This may be caused by the Powertrain Control Module (PCM) calibration strategy.
ACTION
Reprogram the PCM. The revised calibration should reduce the possibility of DTCs. Refer to the following Service Procedure for details.
SERVICE PROCEDURE
When servicing vehicles with the check engine light on and one or more Ignition Coil DTCs (P0351, P0352, P0353), perform Powertrain
Control/Emissions Diagnosis (PC/ED) diagnostics for that DTC. A DTC may or may not have an associated drive symptom. If no root cause is
identified, reflash the PCM to the level in this TSB.
1.
Perform the diagnostic self-test to check for DTCs. If any codes other than P0351, P0352, or P0353 are present, refer to the appropriate diagnostic
routines in the PC/ED Service Manual and repair as appropriate.
2.
Verify the integrity of the electrical connections at the ignition coil and spark plugs.
3.
Using the New Generation Star (NGS) Tester only (this function is not available on Service Bay Diagnostic System (SBDS)), access the PCM
identification function to obtain the part number of the PCM.
