YES -
Replace front passenger's door lock switch.?
NO -
Go to step 10.
10. Turn the ignition switch to LOCK (0).
11. Disconnect front passenger's MPCS unit connector A (28P).
12. Check for continuity between body ground and front passenger's door lock switch 5P connector terminals No. 3 and No. 4 individually.
Is there continuity?
YES -
Repair a short to ground in the wire.?
NO -
Replace the front passenger's MPCS unit.?
B2187
DTC Troubleshooting: B2187
DTC B2187:
UART Communication Error 1 (Driver's MPCS Unit from DR Door ECU)
NOTE: If you are troubleshooting multiple DTCs, be sure to follow the instructions in B-CAN System Diagnosis Test Mode A See: Powertrain
Management/Computers and Control Systems/Information Bus/Testing and Inspection/Component Tests and General Diagnostics/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 B2187 indicated?
YES -
Go to step 4.
NO -
Intermittent failure, the system is OK at this time.?
4. Turn the ignition switch to LOCK (0).
5. Disconnect front passenger's MPCS unit connector A (28P).
6. Turn the ignition switch to ON (II).
7. Clear the DTCs with the HDS.
