VSA System

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 alternator regulator circuit: Except Si model Alternator and Regulator Circuit Troubleshooting, Si model Alternator and Regulator Circuit Troubleshooting.

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

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

YES -

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

NO -

Check the battery Testing and Inspection, and troubleshoot the alternator regulator circuit: Except Si model Alternator and Regulator Circuit Troubleshooting, Si model Alternator and Regulator Circuit Troubleshooting.�