B1284

DTC Troubleshooting: B1281, B1282, B1283, B1284

DTC B1281:

Front Wiper MIST Position Circuit Malfunction

DTC B1282:

Front Wiper INT (AUTO) Position Circuit Malfunction

DTC B1283:

Front Wiper LOW Position Circuit Malfunction

DTC B1284:

Front Wiper HIGH Position Circuit Malfunction

NOTE: If you are troubleshooting multiple DTCs, be sure to follow the instructions in B-CAN System Diagnosis Test Mode A Troubleshooting - B-CAN System Diagnosis Test Mode A.

1. Clear the DTCs with the HDS.

2. Turn the ignition switch to LOCK (0) and then back to ON (II).

3. Turn the wiper switch to the MIST, INT, LOW, HIGH, and OFF positions.

4. Check for DTCs with the HDS.

Is DTC B1281, B1282, B1283 or B1284 indicated?

YES -

Go to step 5.

NO -

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

5. Select WIPER from the BODY ELECTRICAL menu, and enter the DATA LIST.

6. Check each windshield wiper switch position value with the DATA LIST menu.

When the windshield wiper switch is OFF:

Are all data list values correct?

YES -

Go to step 7.

NO -

Go to step 12.

7. Turn the ignition switch to LOCK (0).

8. Disconnect under-dash fuse/relay box connector M (34P).

9. Check for continuity between under-dash fuse/relay box connector M (34P) terminals as shown:

Is there continuity?

YES -

Repair a short between the wires.

NO -

Faulty MICU; replace the under-dash fuse/relay box.

- USA model Under-Dash Fuse/Relay Box Removal and Installation (USA Models)
- Canada model Under-Dash Fuse/Relay Box Removal and Installation (Canada Models)

10. Turn the ignition switch to LOCK (0).

11. Disconnect the wiper/washer switch 8P connector.

12. Turn the ignition switch to ON (II).

13. Check each windshield wiper switch position value with the DATA LIST menu.

Are all data list values correct?

YES -

Replace the wiper/washer switch Service and Repair.

NO -

Go to step 14.

14. Turn the ignition switch to LOCK (0).

15. Disconnect under-dash fuse/relay box connector M (34P).

16. Check for continuity between body ground and under-dash fuse/relay box connector M (34P) terminals No. 10, No. 11, and No. 12 individually.

Is there continuity?

YES -

Repair a short to ground in the wire.

NO -

Go to step 17.

17. Check for continuity between under-dash fuse/relay box connector Q (16P) terminal and under-dash fuse/relay box connector M (34P) terminals as shown: