DTC Troubleshooting: 81-11, 81-52, 81-54, 81-56, 81-58

DTC 81-11:  Central Processing Unit (CPU) Internal Circuit Malfunction
  
  
DTC 81-54:  Central Processing Unit (CPU) Internal Circuit Malfunction
  
  
DTC 81-58:  Central Processing Unit (CPU) Internal Circuit Malfunction

1.Turn the ignition switch ON (II).

2.Clear the DTC with the HDS.

3.Test-drive the vehicle.

4.Check for DTCs with the HDS.

Is DTC 81-11, 81-52, 81-54, 81-56, or 81-58 indicated?


YES - Check for loose terminals in the VSA modulator-control unit 37P connector. If necessary, substitute a known-good VSA modulator-control unit and retest.n


NO - Intermittent failure, the system is OK at this time. Check for loose terminals at the VSA modulator-control unit 37P connector. Refer to intermittent failures troubleshooting.n