DTC B2185: Right Power Mirror Vertical Sensor Signal Error 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 ).

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1. Clear the DTCs with the HDS.
2. Turn the ignition switch to LOCK (0), and then back to ON (II).
3. Move the right power mirror in each direction with the power mirror switch.
4. Check for DTCs with the HDS. Is DTC B2185 indicated? YES -Go to step 5. NO -Intermittent failure, the system is OK at this time. Check for loose or poor connections.
5. Select POWER SEAT/POWER MIRROR from the BODY ELECTRICAL SYSTEM SELECT menu, and enter the DATA LIST.
6. Check the NORMAL/ABNORMAL information of the ASSISTANT DOOR MIRROR VERTICAL SENSOR in the DATA LIST. Is the information indicator ABNORMAL? YES -Go to step 7. NO -Replace the front passenger's MPCS unit.
7. Turn the ignition switch to LOCK (0).
8. Disconnect front passenger's MPCS unit connector A(28P).
9. Disconnect the right power mirror 16P connector.
10. Check for continuity between front passenger's MPCS unit connector A (28P) terminal No. 5 and right power mirror 16P connector terminal No. 11. Is there continuity? YES -Go to step 11. NO -Repair open in the wire.
11. Check for continuity between the right power mirror 16P connector terminal No. 11 and body ground. Is there continuity? YES -Repair short to ground in the wire. NO -Go to step 12.
12. Check for continuity between the right power mirror 16P connector terminals No. 11 and No. 12. Is there continuity? YES -Repair short in the wires. NO -Go to step 13.
13. Reconnect front passenger's MPCS unit connector A(28P).
14. Turn the ignition switch to ON (II).
15. Measure the voltage between the right power mirror 16P connector terminal No. 11 and body ground. Is there about 5 V? YES -Replace the right power mirror. NO -Replace the front passenger's MPCS unit.