2.5L Eng Map Sensor Fault - Sensor Harness Update (18-19-92)
Publication date: 1992-10-19Reference number: 18-19-92
2.5L ENG MAP SENSOR FAULT - SENSOR HARNESS UPDATE
TECHNICAL SERVICE BULLETIN
Reference Number(s): 18-19-92, Date of Issue:
Oct. 19, 1992
MAP SENSOR FAULT CODES
Model 1992 Caravan/Voyager
Section Driveability
Bulletin No. 18-19-92
Date Oct. 19, 1992
Symptom MAP Sensor Fault Codes
SYMPTOM/CONDITION:
The "Check Engine" lamp comes on and "MAP Voltage Too High" and/or "MAP Slow To Change" fault(s) can be read on the DRB 11 Scan Tool. This may occur during a long idle with the air conditioning on. The "Check Engine" lamp goes out when the ignition is turned off and will not illuminate again until the fault condition is again experienced.
DIAGNOSIS:
- Using a DRB 11 Scan Tool, check vehicle on board diagnostics for a MAP voltage too high" and/or "MAP slow to change" fault code(s).
- Visually inspect the MAP sensor hose and wiring to ensure proper installation.
- Perform the applicable tests in the appropriate service information to verify the MAP sensor is operating correctly.
PARTS REQUIRED
| Part | Part No. |
|---|---|
| Harness, MAP Sensor Jumper | 4740934 |
| Tie Strap | 6015756 |
REPAIR PROCEDURE:
This bulletin involves installing a jumper harness containing a diode at the MAP sensor to protect the sensor against an intermittent electrical transient. Do not perform this repair before completing the diagnostic procedure above.
- Disconnect the wiring harness connector at the MAP sensor.
- Install the jumper harness between the MAP sensor and the vehicle wiring harness.
- Secure the harnesses, using the tie wraps, to the headlamp and dash harness.
- Using the DRB 11, erase the stored fault codes and perform the applicable verification tests to ensure the jumper harness has repaired the condition.