| DTC 61-01: | Modulator-control Unit Initial IG Low Voltage |
| DTC 61-22: | Modulator-control Unit Power Source Low Voltage 2 |
| 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 61-01, 61-21, 61-22, or 61-23 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. | Check and note BATTERY voltage in the VSA DATA LIST with the HDS. If the voltage listed is 0 V, go to 8, otherwise go to 6. |
| 6. | Using a voltmeter, measure and note the voltage between the battery terminals. NOTE: If the voltage is below 9.5 V, check the battery, and do the alternator regulator circuit troubleshooting: R18A1 engine model, K20Z2 engine model. |
| 7. | Compare the voltage noted in 5 to the voltage 6. If the difference between the two voltage readings less then 3 V? YES - 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 NO - 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 |
| 8. | Turn the ignition switch OFF. |
| 9. | Disconnect the VSA modulator-control unit 37P connector. |
| 10. | Measure voltage between VSA modulator-control unit 37P connector terminal No. 13 and body ground.
Is there battery voltage? YES - Go to 11. NO - Repair open in the wire between the No. 3 FSR (40 A) fuse and the VSA modulator-control unit.n |
| 11. | Turn the ignition switch ON (II). |
| 12. | Measure voltage between VSA modulator-control unit 37P connector terminal No. 28 and body ground.
Is there battery voltage? YES - 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 NO - Repair open in the wire between the No. 4 (7.5 A) fuse and the VSA modulator-control unit.n |