VSA DTC Troubleshooting: 66
DTC 66:
 VSA Pressure Sensor (Software)
  1. Turn the ignition switch to ON (II).
  1. Check for DTCs with the HDS.
Is DTC 91 or 92 indicated with DTC 66 at the same time?
YES -
Do the DTC 91 or 92 troubleshooting: DTC 91, DTC 92. ■
NO -
Go to Step 3 .
  1. Check the BRAKE SWITCH in the VSA DATA LIST with the HDS while moving the brake pedal.
Does it indicate ON when the pedal is pressed?
YES -
Go to Step 4 .
NO -
Go to Step 13 .
  1. Turn the ignition switch to LOCK (0).
  1. Check the No. 21 (15 A) fuse in the under-hood fuse/relay box.
Is the fuse blown?
YES -
Install a new No. 21 (15 A) fuse, and recheck.■
NO -
Reinstall the checked fuse, then go to Step 6 .
  1. Disconnect the brake pedal position switch 4P connector.
  1. Do the brake pedal position switch test.
Is the switch OK?
YES -
Go to Step 8 .
NO -
Replace the brake pedal position switch. ■
  1. Measure the voltage between brake pedal position switch 4P connector terminal No. 1 and body ground.
Is there battery voltage?
YES -
Go to Step 9 .
NO -
Repair open in the wire between the No. 21 (15 A) fuse in the under-hood fuse/relay box and the brake pedal position switch.■
  1. Reconnect the brake pedal position switch 4P connector.
  1. Short the SCS line with the HDS.
  1. Disconnect the ECM connector A (49P) (L13Z1 engine model) or ECM connector A (44P) (except L13Z1 engine model).