Check for short in harness

Ignition "OFF".
Connect ICU connector.
Ignition "ON" & Engine "OFF".
Measure voltage between signal terminal of ICU harness connector and chassis ground.
Specification: Approx. 10V
Is the measured voltage within specifications?
YES
- Fault is intermittent caused by poor contact in ICU's and/or PCM/ECM connector or was repaired and ICU's and/or PCM/ECM memory was not cleared.
  Therefore, Check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage. Repair or replace as necessary and then go to "VERIFICATION OF VEHICLE REPAIR " procedure.
- Check with trial ICU and/or PCM/ECM to see the performance and if the problem is resolved, replace and go to verification.
- After replacing ICU and/or PCM/ECM, perform Key teaching procedure with scantool.
NO
- Check for short in harness. Repair as necessary and go to "VERIFICATION OF VEHICLE REPAIR " procedure.