LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Acura >> 2009 >> TSX Standard >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Wiper/Washer Systems >> Wiper Systems & Washer Systems (4-CYL) >> DTC Troubleshooting >> DTC B1281: Windshield Wiper Switch MIST Position Circuit Malfunction; DTC B1282: Windshield Wiper Switch INT Position Circuit Malfunction; DTC B1283: Windshield Wiper Switch LOW Position Circuit Malfunction; DTC B1284: Windshield Wiper Switch HIGH Position Circuit Malfunction
April 5, 2026: LEMON Manuals is launched! Read the announcement.

DTC B1281: Windshield Wiper Switch MIST Position Circuit Malfunction; DTC B1282: Windshield Wiper Switch INT Position Circuit Malfunction; DTC B1283: Windshield Wiper Switch LOW Position Circuit Malfunction; DTC B1284: Windshield Wiper Switch 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 (see 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, and wait for 6 seconds or more
  4. 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

  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 turned OFF 

    DATA LIST REFERENCE CHART

    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  10

  7. Turn the ignition switch to LOCK (0)
  8. Disconnect driver's under-dash fuse/relay box connector R (24P)
  9. Check for continuity between driver's under-dash fuse/relay box connector R (24P) terminals as shown
    TERMINALS CONTINUITY CHART

    From terminal To terminal
    15 1,16,17
    17 1,16

    Is there continuity? 

    YES  -Repair a short between the wires

    NO  -Faulty driver's MICU, replace the driver's under-dash fuse/relay box (see DRIVER'S UNDER-DASH FUSE/RELAY BOX (MICU) REMOVAL/INSTALLATION )

  10. Turn the ignition switch to LOCK (0)
  11. Disconnect the 8P connector from the wiper switch
  12. Turn the ignition switch to ON (II)
  13. Check each wiper switch position value with the DATA LIST menu

    When the wiper switch is turned OFF 

    DATA LIST REFERENCE CHART

    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 (see WIPER/WASHER SWITCH TEST/REPLACEMENT )

    NO  -Go to step 14

  14. Turn the ignition switch to LOCK (0)
  15. Disconnect driver's under-dash fuse/relay box connector R (24P)
  16. Check for continuity between body ground and driver's under-dash fuse/relay box connector R (24P) terminals No 15, No 16, and No 17
    Fig 1: Checking Continuity Between Body Ground And Driver's Under-Dash Fuse/Relay Box Connector R (24P) Terminals No 15, No 16, And No 17
    G05995059Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there continuity? 

    YES  -Repair a short to ground in the wire

    NO  -Go to step 17

  17. Check for continuity between driver's under-dash fuse/relay box connector R (24P) terminal No 4 and terminals No 15, No 16, and No 17 individually
    Fig 2: Checking Continuity Between Driver's Under-Dash Fuse/Relay Box Connector R (24P) Terminal No 4 And Terminals No 15, No 16, And No 17
    G05995060Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there continuity? 

    YES  -Repair a short between the wires

    NO  -Faulty driver's MICU, replace the driver's under-dash fuse/relay box (see DRIVER'S UNDER-DASH FUSE/RELAY BOX (MICU) REMOVAL/INSTALLATION )