Diagnostic Procedure

DIAGNOSTIC PROCEDURE

1. Check voltage of terminal KS.
- 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 Volume Air Flow Meter and Engine Control Module.
- If OK proceed to step 3.
- If not OK repair or replace harness or connector.
3. Check voltage terminal KS of Engine Control Module.
- If OK proceed to step 4.
- If not OK check and replace Engine Control Module.
4. Check voltage of Volume Air Flow Meter power source.
- If OK replace Volume Air Flow Meter.
- If not OK check and replace Engine Control Module.