B1281

DTC Troubleshooting: B1281

DTC B1281: Wiper Switch MIST Position Circuit Malfunction

DTC B1282: Wiper Switch INT Position Circuit Malfunction

DTC B1283: Wiper Switch LOW Position Circuit Malfunction

DTC B1284: Wiper Switch HIGH Position Circuit Malfunction

1. Clear the DTCs with the HDS.

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

3. Operate each wiper switch position, then turn the wiper/washer switch OFF.

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 WIPERS from the BODY ELECTRICAL menu, and enter DATA LIST.

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

When the wiper switch is OFF:





Are all data list values correct?
YES - Go to step 15.

NO - Go to step 7.


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

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

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

10. Select WIPERS from the BODY ELECTRICAL menu.

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





Are all data list values correct?
YES - Replace the wiper/washer switch. Wiper/Washer Switch Test/Replacement

NO - Go to step 12.


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

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

14. Check for continuity between under-dash fuse/relay box connector M (24P) terminals No. 10, No. 11, and No. 12 and body ground.

Is there continuity?
YES - Repair short to ground in the wires.

NO - Faulty MICU, replace the under-dash fuse/relay box. Under-Dash Fuse/Relay Box Removal And Installation (USA Models)






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

When the wiper switch is ON (LOW):





When the wiper switch is ON (HIGH):





When the wiper switch is MIST:





When the wiper switch is INT:





Are all data list values correct?
YES - Faulty MICU, replace the under-dash fuse/relay box. Under-Dash Fuse/Relay Box Removal And Installation (USA Models)

NO - Go to step 16.


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

17. Do the wiper/washer switch test. Wiper/Washer Switch Test/Replacement

Is the wiper/washer switch OK?
YES - Go to step 18.

NO - Replace the wiper/washer switch.


18. Disconnect under-dash fuse/relay box connectors M (34P) and Q (16P).

19. Check for continuity between under-dash fuse/relay box connector M (34P) terminals and the wiper/washer switch 8P connector terminals as shown:









Is there continuity?
YES - Faulty MICU, replace the under-dash fuse/relay box. Under-Dash Fuse/Relay Box Removal And Installation (USA Models)

NO - Repair open in the wires.