DTC B1077: Windshield Wiper Motor (Park) Signal Error

WARNING: This page is about a different car, the 2013 Acura MDX, 2012 Acura MDX, 2011 Acura MDX, and 2010 Acura MDX. However, it is still accessible from the selected car via links, so may be relevant.

Turn the ignition switch to ON (II), and the windshield wiper switch ON.
Check the windshield wiper operation.
Does the wiper work?

YES -Go to step 3.

NO -Go to step 13.
Clear the DTC with the HDS.
Turn the ignition switch to LOCK (0) and then back to ON (II).
Turn the windshield wiper switch ON, and then OFF.
Check for DTCs with the HDS.
Is DTC B1077 indicated?

YES -Go to step 7.

NO -Intermittent failure, the system is OK at this time. Check for loose or poor connections.
Select WIPER from the BODY ELECTRICAL SYSTEM SELECT menu, and enter DATA LIST.
Check the ON/OFF information of the Windshield wiper motor park switch with the HDS.
Is OFF indicated when the motor is stopped, and ON intermittently indicated when the motor runs?

YES -Faulty relay control module, replace the under-hood fuse/relay box (see DTC B1065: RELAY CONTROL MODULE LOST COMMUNICATION WITH DRIVER'S MPCS UNIT (DRLOCKSW MESSAGE) ).

NO -Go to step 9.
Turn the ignition switch to LOCK (0).
Disconnect the windshield wiper motor 5P connector.
Disconnect under-hood fuse/relay box connector A (4P).
Check for continuity between windshield wiper motor 5P connector terminal No. 4 and under-hood fuse/relay box connector A (4P) terminal No. 2.

Fig 1: Checking Continuity Between 5P Connector And Connector A (4P)
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there continuity?

YES -Faulty relay control module, replace the under-hood fuse/relay box (see DTC B1065: RELAY CONTROL MODULE LOST COMMUNICATION WITH DRIVER'S MPCS UNIT (DRLOCKSW MESSAGE) ).

NO -Repair an open in the wire.
Turn the ignition switch to LOCK (0), and then check the No. 11 (30 A) and No. 31 (15 A) fuses in the under-dash fuse/relay box.
Are the fuses OK?

YES -Go to step 14.

NO -Replace the fuse(s) and recheck the system.
Do the wiper motor test
Does the wiper motor run normally?

YES -Go to step 15.

NO -Replace the windshield wiper motor and recheck.
Disconnect the windshield wiper motor 5P connector.
Disconnect under-hood fuse/relay box connector A (4P).
Check for continuity between windshield wiper motor 5P connector terminals No. 3 and No. 5 and under-hood fuse/relay box connector A (4P) terminals No. 3 and No. 4 respectively.

Fig 2: Checking Continuity Between 5P Connector And Connector A (4P)
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there continuity?

YES -Go to step 18.

NO -Repair an open in the wire.
Check for continuity between windshield wiper motor 5P connector terminal No. 2 and body ground.

Fig 3: Check For Continuity Between 5P Connector Terminal No. 2 And Body Ground
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there continuity?

YES -Faulty relay control module, replace the under-hood fuse/relay box (see DTC B1065: RELAY CONTROL MODULE LOST COMMUNICATION WITH DRIVER'S MPCS UNIT (DRLOCKSW MESSAGE) ).

NO -Repair an open in the wire or poor ground (G202).