( TL19E00K769000Y1281FAAT00 )

DTC Troubleshooting: B1281, B1282, B1283, B1284

DTC B1281:
Wiper Switch MIST Position Circuit Malfunction
DTC B1282:
Wiper Switch INT (AUTO) 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.

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

1. Turn the wiper switch in MIST, INT, LOW, HIGH, and OFF positions.

1. Check for DTCs with the HDS.

Is DTC B1281, B1282, B1283, or B1284 indicated?

YES | - | Go to Step 5 .
NO | - | Intermittent failure, the wiper system is OK at this time. Check for loose or poor connections.■

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

1. Check each wiper switch position value with the DATA LIST menu.
   When the wiper switch is turned OFF

   Data List | Value
   --- | ---
   Wiper switch (LOW) | OFF
   Wiper switch (HIGH) | OFF
   Wiper switch (MIST) | OFF
   Wiper switch (INT) | OFF

Are all data list values correct?

YES | - | Go to Step 7 .
NO | - | Go to Step 11 .

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

1. Disconnect driver's under-dash fuse/relay box connector R (24P).

1. Check for continuity between driver's under-dash fuse/relay box connector R (24P) terminals and the wiper/washer switch 8P connector terminals as shown:

   Driver's under-dash fuse/relay box connector R (24P) | Wiper/washer switch 8P connector
   --- | ---
   4 | 5 [8]
   15 | 2 [2]
   16 | 4 [3]
   17 | 3 [1]

   [ ]: | RHD model

Is there continuity?

YES | - | Go to Step 10 .
NO | - | Repair an open in the wire.■

1. Check for continuity between driver's under-dash fuse/relay box connector R (24P) terminals as shown:

   From terminal | To terminal
   --- | ---
   15 | 16, 17
   17 | 16

Is there continuity?

YES | - | Repair a short between the wires.■
NO | - | Faulty driver's MICU; replace the driver's under-dash fuse/relay box.■

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

1. Disconnect the 8P connector from the wiper switch.

1. Check each wiper switch position value with the DATA LIST menu.
   When the wiper switch is turned OFF

   Data List | Value
   --- | ---
   Wiper switch (LOW) | OFF
   Wiper switch (HIGH) | OFF
   Wiper switch (MIST) | OFF
   Wiper switch (INT) | OFF

Are all data list values correct?

YES | - | Replace the wiper/washer switch.■
NO | - | Go to Step 14 .

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

1. Disconnect driver's under-dash fuse/relay box connector R (24P).

LHD model, KE and KN models
KQ model

1. Check for continuity between body ground and driver's under-dash fuse/relay box connector R (24P) No. 15, No. 16, and No. 17 terminals.

Is there continuity?

YES | - | Repair a short to ground in the wire.■
NO | - | Go to Step 17 .

1. Check for continuity between driver's under-dash fuse/relay box connector R (24P) No. 4 terminal and No. 15, No. 16, and No. 17 terminals individually.

Is there continuity?

YES | - | Repair a short between the wires.■
NO | - | Faulty driver's MICU; replace the driver's under-dash fuse/relay box. ■