DTC Troubleshooting: 81-11, 81-51, 81-52

DTC 81-11:  Central Processing Unit (CPU) Internal Circuit Malfunction
  
  
DTC 81-52:  Central Processing Unit (CPU) Internal Circuit Malfunction

1.Turn the ignition switch ON (II).

2.Clear the DTC with the HDS.

3.Turn the ignition switch OFF, then turn it ON (II) again.

4.Test-drive the vehicle.

5.Check for DTCs with the HDS.

Is DTC 81-11, 81-51, or 81-52 indicated?


YES - Check for loose terminals in the ABS modulator-control unit 25P connector. If necessary, substitute a known-good ABS modulator-control unit and retest: Except K20Z2 engine model, K20Z2 engine model.n


NO - Intermittent failure, the system is OK at this time. Check for loose terminals at the ABS modulator-control unit 25P connector. Refer to intermittent failures troubleshooting.n