62-21

VSA DTC Troubleshooting: 62-21

DTC 62-21:

VSA Modulator-Control Unit IG High Voltage

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

2. Clear the DTC with the HDS.

3. Turn the ignition switch to LOCK (0), then start the engine.

4. Check for DTCs with the HDS.

Is DTC 62-21 indicated?

YES -

Go to step 5.

NO -

Intermittent failure, the system is OK at this time.�

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

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

NOTE: If the voltage is more than 15.1 V, troubleshoot the charging system indicator circuit Component Tests and General Diagnostics.

7. Compare the voltage noted in step 5 to the voltage in step 6.

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

YES -

Replace the VSA modulator-control unit Service and Repair, and retest.�

NO -

Check the 12 V battery performance Testing and Inspection, and troubleshoot the charging system indicator circuit Component Tests and General Diagnostics.�