VSA System

Control System DTCs

VSA DTC Troubleshooting: 51-12, 51-80, 52-11

DTC 51-12 : Motor Power Source Circuit Malfunction
DTC 51-80 : Motor Malfunction
DTC 52-11 : Motor Stuck OFF

NOTE: Before you troubleshoot, record all freeze data and any on-board snapshot, and review the how to troubleshoot the VSA system Reading and Clearing Diagnostic Trouble Codes.






1. DTC check:

-1. Turn the ignition switch to ON (II).

-2. Clear the DTC with the HDS.

-3. Turn the ignition switch to LOCK (0).

-4. Turn the ignition switch to ON (II), then wait for at least 20 seconds or more.

-5. Check for DTCs with the HDS.






Is DTC 51-12, 51-80, or 52-11 indicated?
-YES- If DTC 51-12, 51-80, or 52-11 are only indicated, go to step 2.
-YES- If DTC 53-11 is also indicated, go to DTC 53-11 VSA System.
-NO- Intermittent failure, the system is OK at this time. Refer to intermittent failures troubleshooting.

2. Fuse check:

-1. Turn the ignition switch to LOCK (0).

-2. Check the following fuse.






Is the fuse OK?
-YES- The fuse is OK. Reinstall the fuse, then go to step 5.
-NO- Go to step 3.

3. Shorted wire check (+B ABS/VSA MTR line):

-1. Disconnect the following connector.






-2. Check for continuity between test points 1 and 2.










Is there continuity?
-YES- Repair a short to body ground in the wire between the No. A1-3 (40 A) fuse in the under-hood fuse/relay box and the VSA modulator-control unit.
-NO- The +B ABS/VSA MTR wire is not shorted to ground. Install a new No. A1-3 (40 A) fuse in the under-hood fuse/relay box, then go to step 4.

4. VSA modulator-control unit check:

-1. Reconnect the following connector.






-2. Turn the ignition switch to ON (II).

-3. Clear the DTC with the HDS.

-4. Turn the ignition switch to LOCK (0).

-5. Turn the ignition switch to ON (II), then wait for at least 20 seconds or more.

-6. Check for DTCs with the HDS.






Is DTC 51-12, 51-80, or 52-11 indicated?
-YES- Go to step 6.
-NO- The troubleshooting is complete.

5. Open wire check (+B ABS/VSA MTR line):

-1. Disconnect the following connector.






-2. Measure the voltage between test points 1 and 2.










Is there battery voltage?
-YES- The +B ABS/VSA MTR wire is OK. Go to step 6.
-NO- Repair an open in the wire between the No. A1-3 (40 A) fuse in the under-hood fuse/relay box and the VSA modulator-control unit.

6. VSA modulator-control unit check (update):

-1. Reconnect the following connector.






-2. Update the VSA modulator-control unit if it does not have the latest software Programming and Relearning.

-3. Turn the ignition switch to LOCK (0).

-4. Turn the ignition switch to ON (II), then wait for at least 20 seconds or more.

-5. Check for DTCs with the HDS.






Is DTC 51-12, 51-80, or 52-11 indicated?
-YES- Check for loose terminals in the VSA modulator-control unit 38P connector. If the VSA modulator-control unit was updated and the symptom/indication is still present, replace the VSA modulator-control unit Service and Repair.
-NO- Troubleshooting is complete. If any other DTCs are indicated, go to the indicated DTCs troubleshooting.