3.0L MMC Map Sensor Rusted: Map Sensor Replacement (18-23-92)
Publication date: 1992-12-22Reference number: 18-23-92
3.0L MMC MAP SENSOR RUSTED: MAP SENSOR REPLACEMENT
TECHNICAL SERVICE BULLETIN
Reference Number(s): 18-23-92, Date of Issue:
December 22, 1992
MAP SENSOR CONTAMINATED BY RUST - 3.0L MMC ENGINE
Model 1992 (AS) Caravan/Grand Caravan/Caravan CV Voyager/Grand Voyager/Town & Country
Group Driveability
Bulletin No. 18-23-92
Date December 22, 1992
SYMPTOM/CONDITION
On some 1992 AS-Body vehicles equipped with 3.0L MMC engine, the "Check Engine" lamp may come on and "MAP voltage too high", "MAP voltage too low", or "MAP slow to change" can be read on the DRB II Scan Tool.
DIAGNOSIS
- Vehicle on board diagnostics are checked with MDS or DRB II Scan Tool and indicate "MAP voltage too high", "MAP voltage too low", or "MAP slow to change".
- Visually inspect the MAP sensor hose and wiring to ensure proper installation.
- Perform the appropriate diagnostic procedures to verify the MAP sensor is not operating correctly.
PARTS REQUIRED
| Qty. | Description | Part Number |
|---|---|---|
| 1 | Sensor, MAP | 4686181 |
| 1 | Tree, Vacuum | 4612456 |
| 1 | Hose, MAP Sensor | 5234318 |
REPAIR PROCEDURE
This bulletin involves replacement of the MAP sensor, MAP sensor hose, and the vacuum tree on 1992 AS-Body vehicles equipped with 3.0L MMC engine.
- Remove the MAP sensor, MAP sensor hose, and the vacuum tree.
- Install the new MAP sensor (P/N 4686181), MAP sensor hose (P/N 5234318), and the vacuum tree (P/N 4612456).
- Use the DRB II to erase the stored diagnostic trouble codes and perform the applicable verification tests to ensure the repair has corrected the condition.