Diagnostic Procedure

DTC 31 - MAP Sensor Signal

DIAGNOSTIC PROCEDURE
1. Check voltage of terminal VC.
- If OK proceed to step 2.
- If not OK check and replace engine control module (ECM).

2. Check voltage of terminal PIM.
- If OK - When diagnostic trouble code 31 is displayed, check and replace ECM.
- If not OK proceed to step 3.

3. Check for open and short in harness and connector between manifold absolute pressure sensor and ECM.
- If OK Check and replace manifold absolute pressure sensor.
- If not OK repair or replace harness or connector.