| 1. | Release the parking brake. |
| 2. | Turn the ignition switch ON (II). |
| 3. | Check the ABS indicator, brake system indicator and VSA indicator for several seconds when the ignition switch is turned ON (II). Do the indicators come on then go off? YES - Intermittent failure, the system is OK at this time. Check for loose terminals between the gauge control module (tach) connector (36P) and the VSA modulator-control unit 37P connector. Refer to intermittent failures troubleshooting.n NO - Go to 4. |
| 4. | Turn the ignition switch OFF. |
| 5. | Short the SCS line with the HDS. |
| 6. | Disconnect PCM connector A (44P). |
| 7. | Disconnect the gauge control module (tach) connector (36P). |
| 8. | Disconnect the VSA modulator-control unit 37P connector. |
| 9. | Check for continuity between the VSA modulator-control unit 37P connector terminal No. 1, No. 15 and body ground individually.
Is there continuity? YES - Repair the short to ground on the appropriate wire.n NO - Go to 10. |
| 10. | Check for continuity between VSA modulator-control unit 37P connector terminals No. 1 and No. 15.
Is there continuity? YES - Repair short in the wire between VSA modulator-control unit 37P connector terminals No. 1 (CAN-L line) and No. 15 (CAN-H line).n NO - Go to 11. |
| 11. | Check for continuity between VSA modulator-control unit 37P connector terminal and gauge control module (tach) connector (36P) terminal (see table).
Is there continuity? YES - Check for loose terminals in the gauge control module (tach) connector (36P). If necessary, substitute a known-good gauge control module (tach), then go to 1 and recheck. If it is OK, replace the original gauge control module (tach). If DTCs are indicated, replace the VSA modulator-control unit.n NO - Repair open in the wire between the gauge control module (tach) and the VSA modulator-control unit.n | |||||||||||