DTC : B1077

DTC B1077  : Windshield Wiper Motor (Park) Signal Error

DTC (MICU)

NOTE:  If you are troubleshooting multiple DTCs, be sure to follow the instructions in B-CAN System Diagnosis Test Mode A - Refer to: Body Electrical Troubleshooting - B-CAN System Diagnosis Test Mode A - Initial Communication and DTC Checks .

1. Determine possible failure area (windshield wiper motor and its drive circuit, FR WIPER AS line)

   -1. Clear the DTCs with the HDS.

   Clear DTCs

   - 2. Turn the vehicle to the OFF (LOCK) mode and then the ON mode.

   - 3. Turn the windshield wiper switch to LOW or HIGH for 15 seconds or more, then turn the switch OFF.

   Does the wiper motor workΩ

   YES 

   Go to step 2.

   NO 

   Go to step 5.

2. Problem verification (DTC)

   -1. Check for DTCs with the HDS.

   DTC Description	DTC
   B1077 Windshield wiper motor (Park) signal error

   Is DTC B1077 indicated?

   YES 

   Go to step 3.

   NO 

   Intermittent failure, the system is OK at this time.

3. Windshield wiper motor check (AS signal)

   -1. Turn the vehicle to the OFF (LOCK) mode.

   - 2. Do the Windshield Wiper Motor test.

   Does the wiper motor run and does it pulse normally?

   YES 

   Go to step 4.

   NO 

   Replace the Wiper Motor - Removal and Installation .

4. Open or shorted wire check (FR WIPER AS line)

   -1. Disconnect the following connectors.

   Windshield wiper motor 4P connector

   Under-dash fuse/relay box connector E (36P)

   - 2. Connect terminals A and B with a jumper wire.

   Terminal A	Windshield wiper motor 4P connector No. 3
   Terminal B	Body ground

   Courtesy of HONDA, U.S.A., INC.

   - 3. Check for continuity between test points 1 and 2.

   Test condition	Vehicle OFF (LOCK) mode Windshield wiper motor 4P connector: disconnected Under-dash fuse/relay box connector E (36P): disconnected Windshield wiper motor 4P connector No. 3: jumped to body ground
   Test point 1	Under-Dash Fuse/Relay Box Connector E (36P) No. 28
   Test point 2	Body ground

   Is there continuity?

   YES 

   Repair a short to ground in the wire.

   NO 

   Repair an open or high resistance in the wire.

5. Fuse check

   -1. Check the following fuses.

   Fuse	No. A2-2 (30 A)
   Location	Under-hood fuse/relay box

   Fuse	No. C8 (7.5 A)
   Location	Under-dash fuse/relay box

   Is each fuse OK?

   YES 

   Go to step 6.

   NO 

   Replace the fuse. If the fuse blows again, repair the short to ground in the No. A2-2 (30 A) and/or No. C8 (7.5 A) fuse circuit(s).

6. Open wire check (+B WIPER line)

   -1. Disconnect the following connector.

   Relay circuit board connector B (16P)

   - 2. Measure the voltage between test points 1 and 2.

   Test condition	Vehicle OFF (LOCK) mode Relay circuit board connector B (16P): disconnected
   Test point 1	Relay circuit board connector B (16P) No. 12
   Test point 2	Body ground

   Courtesy of HONDA, U.S.A., INC.

   Is there battery voltage?

   YES 

   The +B WIPER wire is OK. Go to step 7.

   NO 

   Repair an open or high resistance in the wire.

7. Open wire check (IG1 WIPER line)

   -1. Turn the vehicle to the ON mode.

   - 2. Measure the voltage between test points 1 and 2.

   Test condition	Vehicle OFF (LOCK) mode Relay circuit board connector B (16P): disconnected
   Test point 1	Relay circuit board connector B (16P) No. 7
   Test point 2	Body ground

   Courtesy of HONDA, U.S.A., INC.

   Is there battery voltage?

   YES 

   The IG1 WIPER wire is OK. Go to step 8.

   NO 

   Repair an open or high resistance in the wire.

8. Open wire check (GND line) 1

   -1. Turn the vehicle to the OFF (LOCK) mode.

   - 2. Check for continuity between test points 1 and 2.

   Test condition	Vehicle OFF (LOCK) mode Relay circuit board connector B (16P): disconnected
   Test point 1	Relay circuit board connector B (16P) No. 15
   Test point 2	Body ground

   Courtesy of HONDA, U.S.A., INC.

   Is there continuity?

   YES 

   GND wire is OK. Go to step 9.

   NO 

   Repair an open or high resistance in the ground wire or poor ground (G202).

9. Relay circuit board check

   -1. Test the Relay Circuit Board .

   Is the relay circuit board OK?

   YES 

   Go to step 10.

   NO 

   Replace the Relay Circuit Board - Removal and Installation .

10. Open wire check (FR WIPER INT RLY CL- line)

    -1. Disconnect the following connector.

    Under-dash fuse/relay box connector E (36P)

    - 2. Connect terminals A and B with a jumper wire.

    Terminal A	Relay circuit board connector B (16P) No. 16
    Terminal B	Body ground

    Courtesy of HONDA, U.S.A., INC.

    - 3. Check for continuity between test points 1 and 2.

    Test condition	Vehicle OFF (LOCK) mode Under-dash fuse/relay box connector E (36P): disconnected Relay circuit board connector B (16P): disconnected Relay circuit board connector B (16P) No. 16: jumped to body ground
    Test point 1	Under-Dash Fuse/Relay Box Connector E (36P) No. 16
    Test point 2	Body ground

    Is there continuity?

    YES 

    The FR WIPER INT RLY CL- wire is OK. Go to step 11.

    NO 

    Repair an open or high resistance in the wire.

11. Open wire check (WIPER HI/LO RLY CL- line)

    -1. Connect terminals A and B with a jumper wire.

    Terminal A	Relay circuit board connector B (16P) No. 6
    Terminal B	Body ground

    Courtesy of HONDA, U.S.A., INC.

    - 2. Check for continuity between test points 1 and 2.

    Test condition	Vehicle OFF (LOCK) mode Under-dash fuse/relay box connector E (36P): disconnected Relay circuit board connector B (16P): disconnected Relay circuit board connector B (16P) No. 6: jumped to body ground
    Test point 1	Under-Dash Fuse/Relay Box Connector E (36P) No. 15
    Test point 2	Body ground

    Is there continuity?

    YES 

    The WIPER HI/LO RLY CL- wire is OK. Go to step 12.

    NO 

    Repair an open or high resistance in the wire.

12. Open wire check (FR WIPER HI line)

    -1. Disconnect the following connector.

    Windshield wiper motor 4P connector

    - 2. Check for continuity between test points 1 and 2.

    Test condition	Vehicle OFF (LOCK) mode Under-dash fuse/relay box connector E (36P): disconnected Relay circuit board connector B (16P): disconnected Windshield wiper motor 4P connector: disconnected
    Test point 1	Relay circuit board connector B (16P) No. 14
    Test point 2	Windshield wiper motor 4P connector No. 4

    Courtesy of HONDA, U.S.A., INC.

    Courtesy of HONDA, U.S.A., INC.

    Is there continuity?

    YES 

    The FR WIPER HI wire is OK. Go to step 13.

    NO 

    Repair an open or high resistance in the wire.

13. Open wire check (FR WIPER LO line)

    -1. Check for continuity between test points 1 and 2.

    Test condition	Vehicle OFF (LOCK) mode Under-dash fuse/relay box connector E (36P): disconnected Relay circuit board connector B (16P): disconnected Windshield wiper motor 4P connector: disconnected
    Test point 1	Relay circuit board connector B (16P) No. 5
    Test point 2	Windshield wiper motor 4P connector No. 1

    Courtesy of HONDA, U.S.A., INC.

    Courtesy of HONDA, U.S.A., INC.

    Is there continuity?

    YES 

    The FR WIPER LO wire is OK. Go to step 14.

    NO 

    Repair an open or high resistance in the wire.

14. Windshield wiper motor check

    -1. Do the windshield wiper motor test.

    Does the wiper motor run and does it pulse normally?

    YES 

    Faulty MICU; replace the Under-Dash Fuse/Relay Box - Removal and Installation - Removal and Installation .

    NO 

    Replace the Wiper Motor - Removal and Installation .