| DTC 62-21: | 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 5. NO - Intermittent failure, the system is OK at this time. Check for loose terminals at the VSA modulator-control unit 37P connector. Refer to intermittent failures troubleshooting.n |
| 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 the voltage difference 3 V or more? YES - Replce the VSA modulator-control unit.n NO - Check the battery, and do the alternator regulator circuit troubleshooting: R18A1 engine model, K20Z2 engine model. Also check for loose terminals in the VSA modulator-control unit 37P connector. If necessary, substitute a known-good VSA modulator-control unit and retest.n |