Manufacturer Code Charts: 42

Adaptive Cruise Control (ACC) DTC Troubleshooting: 42

DTC 42:

VSA Brake Actuator Malfunction

1. Check if the VSA modulator-control unit has ever been replaced.

Has it been replaced?

YES -

Go to step 2.

NO -

Go to step 3.

2. Check the part number of the VSA modulator-control unit, and make sure that it is the correct part, and it was installed properly.

Are the correct parts installed?

YES -

Go to step 3.

NO -

Faulty VSA modulator-control unit; replace the VSA modulator-control unit Service and Repair.�

3. Update the VSA modulator-control unit Testing and Inspection and the ACC unit Programming and Relearning, if they do not have the latest software.

4. Press the engine start/stop button to select the ON mode, then wait for 10 seconds.

5. Press the MAIN switch ON.

6. Check for DTCs with the HDS.

Is DTC 42 indicated?

YES -

Go to step 7.

NO -

Intermittent failure, the system is OK at this time.�

7. Check for VSA system DTCs with the HDS Reading and Clearing Diagnostic Trouble Codes.

Are any DTCs indicated?

YES -

Troubleshoot the indicated VSA system DTC(s).�

NO -

Check for loose or poor connections. If OK, replace the ACC unit Service and Repair.�