DTC Troubleshooting: 51, 52
  1. Check for continuity between VSA modulator-control unit 47P connector terminal No. 47 and body ground.
Is there continuity?
YES -
Go to Step 13 .
NO -
Repair open in the wire between the VSA modulator-control unit and body ground (G202).■
  1. Reconnect the VSA modulator-control unit 47P connector.
  1. Turn the ignition switch to ON (II).
  1. Clear the DTC with the HDS.
  1. Test-drive the vehicle. Drive the vehicle at 15 km/h (10 mph) or more.
    NOTE: Drive the vehicle on a straight section of road, not on a lift.
  1. Check for DTCs with the HDS.
Is DTC 51 or 52 indicated?
YES -
Go to Step 18 .
NO -
The system is OK at this time.■
  1. Update the VSA modulator-control unit if it does not have the latest software. If the unit already has the latest software, substitute a known-good VSA modulator-control unit.
  1. Test-drive the vehicle. Drive the vehicle at 15 km/h (10 mph) or more.
    NOTE: Drive the vehicle on a straight section of road, not on a lift.
  1. Check for DTCs with the HDS.
Is DTC 51 or 52 indicated?
YES -
Check for loose terminals in the VSA modulator-control unit 47P connector. If the VSA modulator-control unit was updated, substitute a known-good VSA modulator-control unit, 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. If any other DTCs are indicated, go to the indicated DTCs troubleshooting.■