Honda HR-V: DTC B1077 Windshield Wiper Motor (Park) Signal Error
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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):
- Clear the DTCs with the HDS.
Clear DTCs
- Turn the vehicle to the OFF (LOCK) mode and then the ON mode.
- Turn the windshield wiper switch to LOW or HIGH for 15 seconds or more, then turn the switch OFF.
Does the wiper motor work?
YES
Go to step 2.
NO
Without keyless access system: Go to step 5.
NO
With keyless access system: Go to step 11.
2. Problem verification (DTC):
Check for DTCs with the HDS.
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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):
- Turn the vehicle to the OFF (LOCK) mode.
- Do the windshield wiper motor test.
Does the wiper motor run and does it pulse normally?
YES
Go to step 4.
NO
Replace the windshield wiper motor.
4. Open or shorted wire check (FR WIPER AS line):
- Disconnect the following connectors.
Windshield wiper motor 4P connector
Under-dash fuse/relay box connector Q (40P)
- Check for continuity between test points 1 and 2.
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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:
- Check the following fuse.
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Is the fuse OK?
YES
Go to step 6.
NO
Replace the fuse. If the fuse blows again, repair the short to ground in the No. D15 (30 A) fuse circuit.
6. Windshield wiper intermittent relay check:
- Turn the vehicle to the OFF (LOCK) mode.
- Remove the windshield wiper intermittent relay from the auxiliary under-hood relay box A, and test it.
Is the relay OK?
YES
Go to step 7.
NO
Replace the windshield wiper intermittent relay, then recheck.
7. Windshield wiper high/low relay check:
- Remove the windshield wiper high/low relay from the auxiliary under-hood relay box A, and test it.
Is the relay OK?
YES
Go to step 8.
NO
Replace the windshield wiper high/low relay, then recheck.
8. Open wire check (IG1 FR WIPER lines):
- Turn the vehicle to the ON mode.
- Measure the voltage between test points 1 and 2 individually.
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Is there battery voltage?
YES
The IG1 FR WIPER wires are OK. Go to step 9.
NO
Repair an open or high resistance in the wire.
9. Open wire check (FR WIPER HI/LO RLY COM line):
- Turn the vehicle to the OFF (LOCK) mode.
- Check for continuity between test points 1 and 2.
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Is there continuity?
YES
The FR WIPER HI/LO RLY COM wire is OK. Go to step 10.
NO
Repair an open or high resistance in the wire.
10.Open wire check (GND line):
Check for continuity between test points 1 and 2.
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Is there continuity?
YES
GND wire is OK. Go to step 19.
NO
Repair an open or high resistance in the ground wire or poor ground (G301).
11.Fuse check:
Check the following fuses.
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Is each fuse OK?
YES
Go to step 12.
NO
Replace the fuse. If the fuse blows again, repair the short to ground in the No. B5 (30 A) and/or No. C31 (10 A) fuse circuit(s).
12.Windshield wiper motor relay check:
- Turn the vehicle to the OFF (LOCK) mode.
- Remove the windshield wiper motor relay from the auxiliary under-hood relay box A, and test it.
Is the relay OK?
YES
Go to step 13.
NO
Replace the windshield wiper motor relay, then recheck.
13.Open wire check (+B WIPER line):
Measure the voltage between test points 1 and 2.
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Is there battery voltage?
YES
The +B WIPER wire is OK. Go to step 14.
NO
Repair an open or high resistance in the wire.
14.Open wire check (IG1 RELAY COIL line):
- Turn the vehicle to the ON mode.
- Measure the voltage between test points 1 and 2.
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Is there battery voltage?
YES
The IG1 RELAY COIL wire is OK. Go to step 15.
NO
Repair an open or high resistance in the wire.
15.Windshield wiper intermittent relay check:
- Turn the vehicle to the OFF (LOCK) mode.
- Remove the windshield wiper intermittent relay from the auxiliary under-hood relay box A, and test it.
Is the relay OK?
YES
Go to step 16.
NO
Replace the windshield wiper intermittent relay, then recheck.
16.Windshield wiper high/low relay check:
Remove the windshield wiper high/low relay from the auxiliary under-hood relay box A, and test it.
Is the relay OK?
YES
Go to step 17.
NO
Replace the windshield wiper high/low relay, then recheck.
17.Open wire check (FR WIPER MAIN RLY OUT lines):
Check for continuity between test points 1 and 2 individually.
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Is there continuity?
YES
The FR WIPER MAIN RLY OUT wires are OK. Go to step 18.
NO
Repair an open or high resistance in the wire.
18.Open wire check (GND line):
Check for continuity between test points 1 and 2.
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Is there continuity?
YES
GND wire is OK. Go to step 19.
NO
Repair an open or high resistance in the ground wire or poor ground (G301).
19.Open wire check (FR WIPER INT RLY CL- line):
- Disconnect the following connector.
Under-dash fuse/relay box connector Q (40P)
- Check for continuity between test points 1 and 2.
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*: With keyless access system
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Is there continuity?
YES
The FR WIPER INT RLY CL- wire is OK. Go to step 20.
NO
Repair an open or high resistance in the wire.
20.Open wire check (WIPER HI/LO RLY CL- line):
Check for continuity between test points 1 and 2.
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*: With keyless access system
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Is there continuity?
YES
The WIPER HI/LO RLY CL- wire is OK. Go to step 21.
NO
Repair an open or high resistance in the wire.
21.Open wire check (FR WIPER HI line):
- Disconnect the following connector.
Windshield wiper motor 4P connector
- Check for continuity between test points 1 and 2.
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*: With keyless access system
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Is there continuity?
YES
The FR WIPER HI wire is OK. Go to step 22.
NO
Repair an open or high resistance in the wire.
22.Open wire check (FR WIPER LO line):
Check for continuity between test points 1 and 2.
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*: With keyless access system
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Is there continuity?
YES
The FR WIPER LO wire is OK. Go to step 23.
NO
Repair an open or high resistance in the wire.
23.Windshield wiper motor check:
- 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.
NO
Replace the windshield wiper motor.
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