DTC 62-21

DTC 62-21: VSA Modulator-control Unit IG High Voltage

1. Turn the ignition switch ON (II).
2. Clear the DTC with the HDS.
3. Turn the ignition switch OFF, 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. Using a voltmeter, measure the voltage between the battery terminals. Compare the voltage measured at the battery with the voltage shown in the VSA DATA LIST with the HDS.

Is there a voltage difference of 3 V or more?

YES - Replace the VSA modulator-control unit.

NO - Check the battery and troubleshoot the alternator regulator circuit. Also check for loose terminals in the VSA modulator-control unit 37P connector. If it is OK, replace the known-good VSA modulator-control unit.