Grand Voyager V6-201 3.3L VIN R SMFI (1997)
PROM - Programmable Read Only Memory: All Technical Service Bulletins
PCM - MIL ON/Stumble/Miss/Display Errors
NO: 18-04-97
GROUP: Vehicle Performance
DATE: Jan. 24, 1997
SUBJECT:
Erroneous MIL Illumination With
Hex Code $29, $2A, $2B,
Erroneous PCM Resets, Displayed
Fuel Economy Inaccuracy
MODELS:
1997
(GS)
Chrysler Voyager (International Market)
1997
(NS)
Town & Country/Caravan/Voyager
NOTE:
THIS BULLETIN APPLIES TO ALL 1997 VEHICLES BUILT PRIOR TO JANUARY 31, 1997 (MDH 01-31-XX) WITH THE ENGINE
APPLICATIONS:
SYMPTOM/CONDITION:
1.
Erroneous MIL illumination with DTCs IGNITION COIL # 3 PRIMARY CIRCUIT - Hex $29, IGNITION COIL # 2 PRIMARY CIRCUIT - Hex
$2A, or IGNITION COIL # 1 PRIMARY CIRCUIT - Hex $2B.
2.
Engine stumble or miss at idle or open throttle at 2 minute intervals. This condition can only occur after a fuel system (rich/lean) code (MIL) has
been set and the condition corrects itself after 3 good OBD II trips, or a technician makes repairs and does not erase the faults. The stumble occurs
after 3 good OBD II defined trips at which time the engine control module does a reset every 2 minutes during a drive cycle.
3.
Some vehicles equipped with overhead consoles may experience up to a 20% error in the average fuel economy displayed.
DIAGNOSIS:
Using the Mopar Diagnostic System (MDS) or the Diagnostic Scan Tool (DRB III) with the appropriate Diagnostic Procedures Manual, verify all engine
systems are functioning as designed. If Diagnostic Trouble Codes (DTC's) are present, record them on the repair order and repair as necessary before
proceeding further with this bulletin. If no DTC's other than those listed above are present and any of the above symptoms have been experienced,
perform the Repair Procedure.
EQUIPMENT REQUIRED:
All Symptoms (Flash Programming)
1
CH6OOO
Scan Tool (DRB III)
1
CH7035
General Purpose Interface Bus Cable (GPIB)
1
CH7OOO/7001
JI962 Cable
1
4669020
Label - Authorized Software Update
1
4275086
Label - Authorized Modification
