Open Or Short Check
- Ignition "ON" & Engine "OFF".
- Measure voltage between G sensor signal terminal of the HECU harness connector and chassis ground.
Specification : Approx. 2.5V
- Is the measured value within specifications?
YES:
- Substitute with a known-good HECU and check for proper operation.
If problem is corrected, replace HECU and then go to "VERIFICATION OF VEHICLE REPAIR " procedure.
NO:
- Repair open or short in signal circuit between the G sensor harness connector and HECU harness connector, and then go to "VERIFICATION OF VEHICLE REPAIR " procedure.
- If there is no problem in Signal circuit, Go to "COMPONENT INSPECTION " procedure.
- Substitute with a known-good HECU and check for proper operation.