Inspection Procedure

INSPECTION PROCEDURE

1. Check voltage between terminals KS and E1 of engine control module onnector.





- Connect the Check Harness A.
- Measure voltage between terminals KS and E1 of Engine Control Module connector while engine is cranked.

Voltage: 2.0 to 4.0 volts (Neither 0.0 volts nor 5.0 volts)

- If OK When Diagnostic Trouble Code 31 is displayed, check and replace Engine Control Module.
- If not OK proceed to step 2.
2. Check for open and short in harness and connector between Engine Control Module and Volume Air Flow Meter.
- If OK proceed to step 3.
- If not OK repair or replace harness or connector.
3. Disconnect Volume Air Flow Meter connector and check voltage between terminals KS and E1 of Engine Control Module connector.





- Disconnect the volume air flow meter connector.
- Turn ignition switch ON.
- Measure voltage between terminals KS and E1 of Engine Control Module connector.

Voltage: 4.5 - 5.5 volts

- If OK proceed to step 4.
- If not OK check and replace Engine Control Module.
4. Disconnect Volume Air Flow Meter connector and check voltage between terminals VCC and E1 of Engine Control Module connector.





- Disconnect the Volume Air Flow Meter connector.
- Turn ignition switch ON.
- Measure voltage between terminals VCC and E1 of Engine Control Module connector.

Voltage: 4.5 - 5.5 volts

- If OK replace Volume Air Flow Meter.
- If not OK check and replace Engine Control Module.