Diagnostic Procedure

DIAGNOSTIC PROCEDURE





1. Check operation of speedometer.
- If OK proceed to step 2.
- If not OK check speedometer circuit.
2. Check for short in harness and connector between terminal SP1 and body ground.
- If OK proceed to step 3.
- If not OK repair or replace harness or connector.
3. Check voltage of terminal SP1.
- If OK proceed to step 4.
- If not OK check for open in harness and connector between Junction Box No. 3 and Engine Control Module.
4. Check for open in harness and connector between Junction Box No. 3 and combination meter.
- If OK check and replace Engine Control Module.
- If not OK repair or replace harness or connector.