Monitor GDS Data

1. Connect GDS to Data Link Connector (DLC).
2. IG "ON" & ENG "ON".
3. Monitor the "5V REFERENCE VOLTAGE" parameter on the "Current Data  " menu of the GDS.

   Specification:  Approx. 5V

4. Is parameter displayed within specifications?

YES 

• Fault is intermittent caused by poor connection in power harness (IGN+) and/or HECU's connector or was repaired and HECU memory was not cleared. Thoroughly 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.

NO 

• Go to next step.