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Home >> Acura >> 2009 >> RDX >> Repair and Diagnosis >> Brakes >> Traction Control >> VSA (Vehicle Stability Assist) System >> DTC Troubleshooting >> DTC 83: PCM Communication Error

DTC 83: PCM Communication Error

  1. Turn the ignition switch ON (II).
  2. Check for DTCs with the HDS.

    Is DTC 86 indicated with DTC 83 at the same time? 

    YES  - Do the DTC 86 troubleshooting (see DTC 86: F-CAN COMMUNICATION ).

    NO  - Go to step 3.

  3. Check for the fuel and emissions system DTCs with the HDS (see GENERAL TROUBLESHOOTING INFORMATION ).

    Are any DTCs indicated? 

    YES  - Do the applicable troubleshooting for the PCM.

    NO  - Go to step 4.

  4. Clear the DTC with the HDS.
  5. Turn the ignition switch to LOCK (0), then turn it ON (II) again.
  6. Check for DTCs with the HDS.

    Is DTC 83 indicated? 

    YES  - Check for loose terminals in the VSA modulator-control unit 46P connector. If necessary, substitute a know-good VSA modulator-control unit (see VSA MODULATOR-CONTROL UNIT REMOVAL AND INSTALLATION ) and retest.

    NO  - Intermittent failure, the system is OK at this time. Check for loose terminals between the PCM connector A (44P) and the VSA modulator-control unit 46P connector. Refer to intermittent failures troubleshooting (see INTERMITTENT FAILURES ).

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