VSA Activation Indicator Circuit Troubleshooting

VSA activation 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 the 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 the gauge assembly and body ground (G401).n

8.Connect the gauge assembly connector A (20P) to the gauge assembly.

9.Connect the gauge assembly connector C (40P) terminal No. 35 and body ground with a jumper wire.

 

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

Does the VSA activation indicator come on?


YES - Repair open in the wire between the VSA modulator-control unit and the gauge assembly. If the wire is OK, replace the VSA modulator-control unit.n


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

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


1.Turn the ignition switch ON (II), and read the DTCs using the HDS.

Is there DTC?


YES - Go to 2.


NO - Do the troubleshooting for the VSA activation indicator does not go off.n


2.Clear the DTCs using HDS.

3.Turn the ignition switch OFF.

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

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


YES - The system is OK at this time.n


NO - Go to 5.


5.Check the VSA OFF Switch.

Is the switch OK?


YES - Go to 6.


NO - Replace the VSA OFF Switch.n


6.Disconnect the VSA OFF Switch 5P connector.

7.Turn the ignition switch ON (II).

8.Measure the voltage between body ground and VSA OFF Switch 5P connector terminal No. 1.

 

Is there battery voltage?


YES - Go to 9.


NO - Check the No. 25 (7.5 A) fuse in the under-dash fuse/relay box. If the fuse is OK, repair open in the wire between the VSA OFF Switch and the under-dash fuse/relay box.n

9.Turn the ignition switch OFF.

10.Disconnect the VSA control unit 46P connector.

11.Check for continuity between the VSA control unit 46P connector terminal No. 14 and body ground.

 

Is there continuity?


YES - Do the troubleshooting for the gauge assembly. If the gauge assembly is OK, 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


NO - Repair short to body ground in the wire between the VSA modulator-control unit and the VSA OFF Switch. If the wire is OK, replace the VSA modulator-control unit.n