62-11

VSA DTC Troubleshooting: 62-11

DTC 62-11:

Modulator-Control Unit Power Source Circuit (IG) High Voltage

NOTE: Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general troubleshooting information Reading and Clearing Diagnostic Trouble Codes.

1. Turn the ignition switch to ON (II).

2. Clear the DTC with the HDS.

3. Turn the ignition switch to LOCK (0).

4. Start the engine.

5. Check for DTCs with the HDS.

Is DTC 62-11 indicated?

YES -

Go to step 6.

NO -

Intermittent failure, the system is OK at this time. Refer to intermittent failures troubleshooting.

6. Check and note BATTERY voltage in the VSA DATA LIST with the HDS.

7. Using a voltmeter, measure and note the voltage across the battery terminals.

NOTE: If the voltage is more than 15.1 V, troubleshoot the alternator regulator circuit Alternator and Regulator Circuit Troubleshooting.

8. Compare the voltage noted in step 6 to the voltage in step 7.

Is the difference between the two voltage readings less than 3 V?

YES -

Go to step 9.

NO -

Check the battery Battery Test, and troubleshoot the alternator regulator circuit Alternator and Regulator Circuit Troubleshooting.

9. Update the VSA modulator-control unit if it does not have the latest software Testing and Inspection.

10. Turn the ignition switch to LOCK (0).

11. Start the engine.

12. Check for DTCs with the HDS.

Is DTC 62-11 indicated?

YES -

Check for loose terminals in the VSA modulator-control unit 36P connector. If the VSA modulator-control unit was updated and the symptom/indication is still present, replace the VSA modulator-control unit Service and Repair, then retest.

NO -

Troubleshooting is complete. If any other DTCs are indicated, go to the indicated DTCs troubleshooting.