VSA System Indicator Circuit Troubleshooting

VSA system indicator does not come on


1.Turn the ignition switch OFF.

2.Remove the gauge assembly.

3.Disconnect the gauge assembly connector A (20P).

4.Turn the ignition switch ON (II).

5.Measure the voltage between body ground and gauge assembly connector A (20P) terminal No. 2.

 

Is there battery voltage?


YES - Go to 6.


NO - Repair open in the wire between gauge assembly and under-dash fuse/relay box.n

6.Turn the ignition switch OFF.

7.Check for continuity between the gauge assembly connector A (20P) terminal No. 9 and body ground.

 

Is there continuity?


YES - Go to 8.


NO - Repair open in the wire between gauge assembly and body ground (G401).n

8.Disconnect the VSA control unit 46P connector.

9.Disconnect the gauge assembly connector C (40P).

10.Check for continuity between the gauge assembly connector C (40P) terminal No. 30 and the gauge assembly connector A (20P) terminal No. 9.

 

Is there continuity?


YES - Repair short to body ground in the wire between the VSA modulator-control unit and the gauge assembly.n


NO - Check for loose or poor connections in the gauge assembly connectors. If connections are good, replace the gauge assembly.n

VSA indicator does not go off, and no DTCs are stored


1.Check for loose or disconnected connection in the VSA control unit 46P connector.

Is the connected properly?


YES - Go to 2.


NO - Connect the VSA control unit 46P connector properly, and recheck.n


2.Turn the ignition switch OFF.

3.Check the No. 25 (7.5 A) fuse in the under-dash fuse/relay box, and reinstall the fuse if it is OK.

Is the fuse OK?


YES - Go to 4.


NO - Replace the fuse, then go to 13.

4.Disconnect the VSA control unit 46P connector.

5.Turn the ignition switch ON (II).

6.Measure the voltage between body ground and VSA control unit 46P connector terminal No. 40.

 

Is there battery voltage?


YES - Go to 7.


NO - Repair open in the wire between the VSA control unit 46P connector and under-dash fuse/relay box.n


7.Check for continuity between body ground and the VSA control unit 46P connector terminals No. 40.

 

Is there continuity?


YES - Go to 8.


NO - Repair open in the wire between the VSA control unit 46P connector and body ground (G202).n

8.Turn the ignition switch OFF.

9.Remove the gauge assembly.

10.Check for loose or disconnected connection in the gauge assembly connector C (40P).

Is the connected properly?


YES - Go to 11.


NO - Connect the gauge assembly connector C (40P) properly, and recheck.n


11.Connect the gauge assembly connector C (40P) terminal No. 30 and body ground with a jumper wire.

 

12.Turn the ignition switch ON (II), and watch the VSA indicator.

Does the VSA indicator does not come on?


YES - Replace the VSA modulator-control unit.n


NO - Do the gauge assembly self-diagnosis function.n

13.Turn the ignition switch ON (II), and watch the VSA indicator.

Does the VSA indicator come on, then go off after several seconds?


YES - The system is OK at this time.n


NO - Go to 14.


14.Turn the ignition switch OFF.

15.Disconnect the VSA control unit 46P connector and remove the No. 25 (7.5 A) fuse in the under-dash fuse/relay box.

16.Check for continuity between body ground and the VSA control unit 46P connector terminals No. 9.

 

Is there continuity?


YES - Repair short to body in the wire between the VSA control unit 46P connector and under-dash fuse/relay box.n


NO - Check for loose connector terminals in the VSA control unit 46P connector and repair if necessary. If terminals are OK, replace the VSA modulator-control unit.n