DTC : 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

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. Wiper/washers system check

   -1. Turn the windshield wiper switch to the OFF position, check the parameter(s) below with the HDS.

   Signal	Threshold		Current conditions
   	Values	Unit	Values	Unit
   Windshield Wiper Switch (LOW)	OFF
   Windshield Wiper Switch (HIGH)	OFF
   Windshield Wiper Switch (INT)	OFF
   Windshield Wiper Switch (MIST)	OFF

   Are all data list values correct?

   YES 

   Go to step 4.

   NO 

   Go to step 2.

2. Determine possible failure area (windshield wiper/washer switch, others)

   -1. Turn the vehicle to the OFF (LOCK) mode.

   - 2. Disconnect the following connector.

   Windshield wiper/washer switch 10P connector

   - 3. Check the parameter(s) below with the HDS.

   Signal	Threshold		Current conditions
   	Values	Unit	Values	Unit
   Windshield Wiper Switch (LOW)	OFF
   Windshield Wiper Switch (HIGH)	OFF
   Windshield Wiper Switch (INT)	OFF
   Windshield Wiper Switch (MIST)	OFF

   Has the data list value changed from ON to OFF?

   YES 

   Replace the Wiper/Washer Switch - Removal and Installation .

   NO 

   Go to step 3.

3. Shorted wire check (FR WIP INT SW, FR WIP HI SW, FR WIP MIST SW lines)

   -1. Turn the vehicle to the OFF (LOCK) mode.

   - 2. Disconnect the following connector.

   Under-dash fuse/relay box connector N (20P)

   - 3. Check for continuity between test points 1 and 2.

   Test condition	Vehicle OFF (LOCK) mode Windshield wiper/washer switch 10P connector: disconnected Under-dash fuse/relay box connector N (20P): disconnected
   Test point 1	Under-Dash Fuse/Relay Box Connector N (20P) No. 3
   Test point 2	Body ground

   Test point 1	Under-Dash Fuse/Relay Box Connector N (20P) No. 2
   Test point 2	Body ground

   Test point 1	Under-Dash Fuse/Relay Box Connector N (20P) No. 13
   Test point 2	Body ground

   Is there continuity?

   YES 

   Repair a short to ground in the wire.

   NO 

   The FR WIP INT SW, FR WIP HI SW, and FR WIP MIST SW wires are OK. Faulty MICU; replace the Under-Dash Fuse/Relay Box - Removal and Installation .

4. Shorted wire check (FR WIP MIST SW to FR WIP HI SW, FR WIP HI SW to FR WIP INT SW, FR WIP MIST SW to FR WIP INT SW lines)

   -1. Check the parameter(s) below with the HDS.

   When the windshield wiper switch is turned to HI 

   Signal	Threshold		Current conditions
   	Values	Unit	Values	Unit
   Windshield Wiper Switch (LOW)	OFF
   Windshield Wiper Switch (HIGH)	ON
   Windshield Wiper Switch (INT)	OFF
   Windshield Wiper Switch (MIST)	OFF

   When the windshield wiper switch is turned to LO 

   Signal	Threshold		Current conditions
   	Values	Unit	Values	Unit
   Windshield Wiper Switch (LOW)	ON
   Windshield Wiper Switch (HIGH)	OFF
   Windshield Wiper Switch (INT)	ON
   Windshield Wiper Switch (MIST)	OFF

   When the windshield wiper switch is turned to INT 

   Signal	Threshold		Current conditions
   	Values	Unit	Values	Unit
   Windshield Wiper Switch (LOW)	OFF
   Windshield Wiper Switch (HIGH)	OFF
   Windshield Wiper Switch (INT)	ON
   Windshield Wiper Switch (MIST)	OFF

   When the windshield wiper switch is turned OFF 

   Signal	Threshold		Current conditions
   	Values	Unit	Values	Unit
   Windshield Wiper Switch (LOW)	OFF
   Windshield Wiper Switch (HIGH)	OFF
   Windshield Wiper Switch (INT)	OFF
   Windshield Wiper Switch (MIST)	OFF

   When the windshield wiper switch is turned to MIST 

   Signal	Threshold		Current conditions
   	Values	Unit	Values	Unit
   Windshield Wiper Switch (LOW)	OFF
   Windshield Wiper Switch (HIGH)	OFF
   Windshield Wiper Switch (INT)	OFF
   Windshield Wiper Switch (MIST)	ON

   Are all data list values correct?

   YES 

   The FR WIP MIST SW to FR WIP HI SW, FR WIP HI SW to FR WIP INT SW, and FR WIP MIST SW to FR WIP INT SW wires are OK. Intermittent failure, the system is OK at this time. Check for loose or poor connections.

   NO 

   Repair a short between the wires.