Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
DTC B1077: Windshield Wiper Motor (Park) Signal Error
- Clear the DTCs with the HDS.
- Turn the ignition switch OFF, and then back ON (II).
- Turn the wiper switch to LOW or HIGH for 15 seconds or more, then turn the switch OFF.
Do the windshield wipers run?
YES - Go to step 4.
NO - Go to step 12.
- Check for DTCs with the HDS.
Is DTC B1077 indicated?
YES - Go to step 5.
NO - Intermittent failure. The windshield wiper system is OK at this time. Check for loose or poor connections.
- Turn the ignition switch OFF.
- Do the WIPER MOTOR TEST
.
Does the wiper motor run normally and does it pulse?
YES - Go to step 7.
NO - Replace the windshield wiper motor and recheck.
- Disconnect under-dash fuse/relay box connector F (34P) and the windshield wiper motor 5P connector.
- Check for continuity between windshield wiper motor 5P*1 (4P)*2 connector terminal No. 4*1 (No. 3)*2 and under-dash fuse/relay box connector F (34P) terminal No. 32.
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Is there continuity?
YES - Go to step 9.
NO - Repair an open in the WHT wire.
- Check for continuity between windshield wiper motor 5P*1 (4P)*2 connector terminal No. 4*1 (No. 3)*2 and body ground.Fig 2: Checking Continuity Between No. 4 Terminal Of Windshield Wiper Motor 5P Connector And Body Ground
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Is there continuity?
YES - Repair a short in the WHT wire.
NO - Go to step 10.
- Turn the ignition switch ON (II).
- Measure the voltage between the No. 4 terminal of the windshield wiper motor 5P connector and body ground.Fig 3: Measuring Voltage Between No. 4 Terminal Of Windshield Wiper Motor 5P Connector And Body Ground
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Is there voltage?
YES - Repair a short to power in the WHT wire.
NO - Faulty MICU; replace the under-dash fuse/relay box.
- Turn the ignition switch OFF.
- Check the No. 38 (30 A) fuse in the under-dash fuse/relay box.
Is the fuse OK?
YES - Go to step 14.
NO - Replace the fuse and recheck the system.
- Do the (see WIPER MOTOR TEST
).
Does the wiper motor run normally?
YES - Go to step 15.
NO - Replace the windshield wiper motor and recheck.*1: '07-08 models *2: '09 model
- Reconnect the windshield wiper motor 5P*1 (4P)*2 connector.
- Measure the voltage between the No. 18 (LO) and No. 19 (HI) terminals of under-dash fuse/relay box connector F (34P) and body ground with the wiper switch in the corresponding position individually.Fig 4: Measuring Voltage Between No. 18 (Lo) And No. 19 (HI) Terminals Of Under-Dash Fuse/Relay Box Connector
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Is there battery voltage?
YES - Go to step 17.
NO - Faulty MICU; replace the under-dash fuse/relay box.
- Measure the voltage between windshield wiper motor 5P*1 (4P)*2 connector terminals No. 3*1 (No. 2)*2 (LO) and No. 5 (HI) and body ground with the wiper switch in the corresponding position individually.
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Is there battery voltage?
YES - Go to step 18.
NO - Repair an open in the BLU (LO) or YEL (HI) wire.
- Measure the voltage between windshield wiper motor 5P*1 (4P)*2 connector terminal No. 2*1 (No. 1)*2 and body ground.Fig 6: Measuring Voltage Between No. 2 Terminal Of Windshield Wiper Motor 5P Connector And Body Ground
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Is there less than 1 V?
YES - Faulty MICU; replace the under-dash fuse/relay box.
NO - Repair an open in the BLK wire or poor ground (G451).
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.