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

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 to LOCK (0) and then back to 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»(ref-348584-S05548461612009112400000) ). NO -Do the driver's MPCS unit input test (see «DRIVER'S MPCS UNIT INPUT TEST»(ref-348551-S34193089842009112400000) ).