Inspection Procedure

DTC 31 - MAP Sensor Signal

PROCEDURE
1. CHECK VOLTAGE BETWEEN TERMINALS VC AND E2 OF ECM CONNECTOR.
- Remove glove compartment.
- Turn ignition switch ON.



- Measure voltage between terminals VC and E2 of ECM connector.

Voltage: 4.5 to 5.5 volts

- If OK proceed to step 2.
- If not OK check and replace ECM.

2. CHECK VOLTAGE BETWEEN TERMINALS PIM AND E2 OF ECM CONNECTOR.
- Turn ignition switch ON.



- Measure voltage between terminals PIM and E2 of ECM connector.

Voltage: 3.3 to 3.9 volts

- If not OK proceed to step 3.
- If OK when DTC 31 is displayed, check and replace ECM.

3. CHECK FOR OPEN AND SHORT IN HARNESS AND CONNECTOR BETWEEN ECM AND MANIFOLD ABSOLUTE PRESSURE SENSOR.
- If OK check and replace manifold absolute pressure sensor.
- If not OK repair or replace harness or connector.