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Is there continuity? YES - Repair short to ground in the wire. NO - Replace the front passenger's power window motor. DTC B2187: COMMUNICATION LINE (UART LINE) CIRCUIT SHORT 1. Clear the DTCs with the HDS. 2. Turn the ignition switch OFF, and then back ON (II). 3. Operate the front passenger's, left rear and right rear power window switches. 4. Check for DTCs with the HDS. Is DTC B2187 indicated? YES - Go to step 5. NO - Intermittent failure, the UART line is OK at this time. 5. Turn the ignition switch OFF. 6. Disconnect these connectors: Driver's MPCS unit connector A (40P) Power window master switch 6P connector Front passenger's MPCS unit connector A (28P) Left rear power window switch 14P connector Right rear power window switch 14P connector Moonroof motor/control unit 8P connector 7. Check for continuity between driver's MPCS unit connector A (40P) terminal No. 8 and body ground. Fig. 41: Checking Continuity Between Driver's MPCS Unit Connector A (40P) Terminal No. 8 NOTE: If you are troubleshooting multiple DTCs, be sure to follow the instructions
2007 Acura RL 2005-08 ACCESSORIES AND EQUIPMENT Power Windows - RL
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