16. Test-drive the vehicle. Drive the vehicle at 8 mph (12 km/h) for 60 seconds or more. around a number of corners.
NOTE: Drive the vehicle on the road, not on a lift.
17. Check for DTCs with the HDS.
Is DTC 137 indicated?
YES -
Check for loose terminals in the VSA modulator-control unit 46P connector. Check for a loose connection at G303. If the VSA modulator-control
unit was updated, substitute a known-good VSA modulator-control unit See: Brakes and Traction Control/Antilock Brakes / Traction Control
Systems/Traction Control Module/Service and Repair, then retest. If the VSA modulator-control unit was substituted, go to step 1.
NO -
If the VSA modulator-control unit was updated, troubleshooting is complete. If the VSA modulator-control unit was substituted, replace the
original VSA modulator-control unit See: Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Traction Control
Module/Service and Repair. If any other DTCs are indicated, go to the indicated DTCs troubleshooting.
138
VSA DTC Troubleshooting: 138
DTC 138:
Brake Pedal Position Switch Malfunction
NOTE: Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general troubleshooting information.
1. Turn the ignition switch to ON (II).
2. Check for DTCs with the HDS.
Is DTC 86 indicated with DTC 138 at the same time?
YES -
Do the DTC 86 troubleshooting See: 86.?
NO -
Go to step 3.
3. Turn the ignition switch to LOCK (0).
4. Check the No. 11 (15 A) fuse in the main under-hood fuse box.
Is the fuse blown?
YES -
Replace the fuse, and recheck. If the fuse is blown, check for a short to body ground in this fuse circuit.
NO -
Reinstall the checked fuse, then go to step 5.
5. Disconnect the brake pedal position switch 4P connector.
6. Measure the voltage between brake pedal position switch 4P connector terminal No. 1 and body ground.
