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Home >> Acura >> 2007 >> RL >> Repair and Diagnosis >> Accessories & Equipment >> Communication Devices >> Multiplex Integrated Control System >> DTC Troubleshooting >> DTC B2159: Driver's MPCS Unit Lost Communication with Keyless Access Control Unit (REMOTE Message)

DTC B2159: Driver's MPCS Unit Lost Communication with Keyless Access Control Unit (REMOTE Message)

NOTE: If you are troubleshooting multiple DTCs, be sure to follow the instructions in B-CAN System Diagnosis Test Mode A (see TROUBLESHOOTING - B-CAN SYSTEM DIAGNOSIS TEST MODE A  ).
  1. Clear the DTCs with the HDS.
  2. Turn the ignition switch OFF, and then back ON (II).
  3. Check for DTCs with the HDS.

    Is DTC B2159 indicated? 

    YES  - Go to step 4.

    NO  - Intermittent failure, the system is OK at this time. Check for loose or poor connections.

  4. Check for DTCs with the HDS.

    Is DTC B1161 also indicated? 

    YES  - Do the keyless access control unit input test (see CONTROL UNIT INPUT TEST ).

    NO  - Do the driver's MPCS unit input test (see DRIVER'S MPCS UNIT INPUT TEST  ).