( TF09E00K801000R6612FAAT00 )
VSA DTC Troubleshooting: 66-12
DTC 66-12:
 Pressure Sensor (Inside of VSA Modulator-control Unit) Malfunction
  1. Turn the ignition switch to ON (II).
  1. Clear the DTC with the HDS.
  1. Turn the ignition switch to LOCK (0), then turn it to ON (II) again.
  1. Check for DTCs with the HDS.
Is DTC 66-12 indicated?
YES -
Go to Step 5 .
NO -
Intermittent failure, the system is OK at this time.■
  1. Turn the ignition switch to LOCK (0).
  1. Check for continuity between steering angle sensor 5P connector terminal No. 5 and body ground.
Is there continuity?
YES -
Repair short to body ground in the wire between the steering angle sensor and the VSA modulator-control unit.■
NO -
Go to Step 9 .
  1. Turn the ignition switch to ON (II).
  1. Measure the voltage between steering angle sensor 5P connector terminal No. 5 and body ground.
Is there 0.1 V or more?
YES -
Repair short to power in the wire between the steering angle sensor and the VSA modulator-control unit.■
NO -
Go to Step 11 .
  1. Turn the ignition switch to LOCK (0).
  1. Check for continuity between VSA modulator-control unit 36P connector terminal No. 9 and steering angle sensor 5P connector terminal No. 5.
Is there continuity?
YES -
Go to Step 13 .
NO -
Repair open in the wire between the steering angle sensor and the VSA modulator-control unit.■
  1. Reconnect all connectors.
  1. Turn the ignition switch to LOCK (0), then turn it to ON (II) again.
  1. Check for DTCs with the HDS.
Is DTC 66-12 indicated?
YES -
Check for loose terminals in the VSA modulator-control unit 36P 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.■