Honda HR-V: DTC B1028: Rear 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. Problem verification:

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 rear window wiper switch to ON for 15 seconds or more, then turn the switch OFF.
4. Check for DTCs with the HDS.

Is DTC B1028 indicated?

YES

Without keyless access system: Go to step 2.

YES

With keyless access system: Go to step 5.

NO

Intermittent failure, the system is OK at this time. Check for loose or poor connections.

2. Fuse check:

Check the following fuse.

Is the fuse OK?

YES

Go to step 3.

NO

Replace the fuse. If the fuse blows again, repair the short to ground in the No. C40 (10 A) fuse circuit.

3. Open wire check (IG1 RR WIPER line):

1. Turn the vehicle to the OFF (LOCK) mode.
2. Disconnect the following connector.

Rear window wiper motor 3P connector

3. Turn the vehicle to the ON mode.
4. Measure the voltage between test points 1 and 2.

Is there battery voltage?

YES

The IG1 RR WIPER wire is OK. Go to step 4.

NO

Repair an open or high resistance in the wire.

4. Rear window wiper motor check:

1. Turn the vehicle to the OFF (LOCK) mode.
2. Do the rear window wiper motor test.

Does the wiper motor run and does it pulse normally?

YES

Go to step 12.

NO

Replace the rear window wiper motor.

5. Fuse check:

Check the following fuses.

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. C23 (10 A) and/or No. C40 (10 A) fuse circuit(s).

6. Rear wiper motor relay check:

1. Turn the vehicle to the OFF (LOCK) mode.
2. Remove the rear wiper motor relay from the auxiliary under-dash relay holder A, and test it.

Is the relay OK?

YES

Go to step 7.

NO

Replace the rear wiper motor relay, then recheck.

7. Open wire check (+B RR WIPER line):

Measure the voltage between test points 1 and 2.

Is there battery voltage?

YES

The +B RR WIPER wire is OK. Go to step 8.

NO

Repair an open or high resistance in the wire.

8. Open wire check (IG1 RR WIPER line):

1. Turn the vehicle to the ON mode.
2. Measure the voltage between test points 1 and 2.

Is there battery voltage?

YES

The IG1 RR WIPER wire is OK. Go to step 9.

NO

Repair an open or high resistance in the wire.

9. Open wire check (GND line):

Check for continuity between test points 1 and 2.

Is there continuity?

YES

The GND wire is OK. Go to step 10.

NO

Repair an open or high resistance in the ground wire or poor ground (G401).

10.Open wire check (RR WIPER MAIN RLY OUT line):

Check for continuity between test points 1 and 2 individually.

Is there continuity?

YES

The RR WIPER MAIN RLY OUT wire is OK. Go to step 11.

NO

Repair an open or high resistance in the wire.

11.Rear window wiper motor check:

1. Turn the vehicle to the OFF (LOCK) mode.
2. Do the rear window wiper motor test.

Does the wiper motor run and does it pulse normally?

YES

Go to step 12.

NO

Replace the rear window wiper motor.

12.Shorted wire check (RR WIPER MTR line to power):

1. Disconnect the following connector.

Under-dash fuse/relay box connector N (52P)

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

*: With keyless access system

*: With keyless access system

Is there battery voltage?

YES

Repair a short to power in the wire to power.

NO

The RR WIPER MTR wire is not shorted to power. Go to step 13

13.Shorted wire check (RR WIPER MTR line):

Check for continuity between test points 1 and 2.

*: With keyless access system

Is there continuity?

YES

Repair a short to ground in the wire.

NO

The RR WIPER MTR wire is not shorted. Go to step 14.

14.Open wire check (RR WIPER MTR line):

Check for continuity between test points 1 and 2.

*: With keyless access system

Is there continuity?

YES

The RR WIPER MTR wire is OK. Faulty MICU; replace the under-dash fuse/relay box.

NO

Repair an open or high resistance in the wire.

DTC B1036 IG1 POWER SUPPLY CIRCUIT MALFUNCTION

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. Problem verification:

1. Clear the DTCs with the HDS.

Clear DTCs

2. Turn the vehicle to the OFF (LOCK) mode and then the ON mode.
3. Wait for at least 6 seconds.
4. Check for DTCs with the HDS.

Is DTC B1036 indicated?

YES

Repair an open or high resistance in the IG1 METER wire.

NO

Intermittent failure, the system is OK at this time. Check for loose or poor connections.

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