BLIND SPOT MONITOR SYSTEM, Diagnostic DTC:U0232

DTC Code DTC Name
U0232 Lost Communication with Blind Spot Monitor Slave Module

DESCRIPTION

This DTC is stored when the blind spot monitor sensor LH judges that there is a communication problem with the blind spot monitor sensor RH.

DTC No. Detection Item DTC Detection Condition Trouble Area
U0232 Lost Communication with Blind Spot Monitor Slave Module The blind spot monitor sensor (master) cannot receive signals from the blind spot monitor sensor (slave)

  • Open or short in CAN bus main wire or connector

  • Open or short in No. 6 CAN junction connector

  • Blind spot monitor sensor RH

  • Power source circuit of blind spot monitor sensor RH

  • Blind spot monitor sensor RH ground circuit

  • Blind spot monitor sensor LH assembly

WIRING DIAGRAM

B005QAPE01

CAUTION / NOTICE / HINT

Note


  • When checking for DTCs, make sure that the blind spot monitor system is turned on.

  • Inspect the fuses for circuits related to this system before performing the following procedure.

  • Before measuring the resistance of the CAN bus, turn the engine switch off and leave the vehicle for 1 minute or more without operating the key or any switches, or opening or closing the doors. After that, disconnect the cable from the negative (-) battery terminal and leave the vehicle for 1 minute or more before measuring the resistance.

  • After turning the engine switch off, waiting time may be required before disconnecting the cable from the negative (-) battery terminal. Therefore, make sure to read the disconnecting the cable from the negative (-) battery terminal notices before proceeding with work.

    Click here

Tech Tips


  • Operating the engine switch, any other switches or a door triggers related ECU and sensor communication on the CAN. This communication will cause the resistance value to change.

  • Even after DTCs are cleared, if a DTC is stored again after driving the vehicle for a while, the malfunction may be occurring due to vibration of the vehicle. In such a case, wiggling the ECUs or wire harness while performing the inspection below may help determine the cause of the malfunction.

PROCEDURE


  1. CONFIRM MODEL


    1. Choose the model to be inspected.

      Result
      Result Proceed to
      w/ Intelligent Clearance Sonar System A
      w/o Intelligent Clearance Sonar System B

    B

    GO TO STEP 3 Click here

    A

  2. CHECK DTC OUTPUT (INTELLIGENT CLEARANCE SONAR SYSTEM)


    1. Using the GTS, check for DTCs according to the prompts on the screen.

      Click here


      Body Electrical > IPA/ICS/Clearance Sonar > Trouble Codes
      Standard
      The clearance warning ECU assembly does not output DTCs U0232 and U0233 simultaneously.
      Result
      Proceed to
      OK
      NG

    NG

    GO TO INTELLIGENT CLEARANCE SONAR SYSTEM (DTC U0232) Click here

    OK

  3. CHECK CAN BUS MAIN WIRE


    1. Turn the engine switch off.

    2. Disconnect the cable from the negative (-) battery terminal.

    3. B005MN0C02
      *1 DLC3
      *a

      Component with harness connected

      (No. 6 CAN Junction Connector)

      Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition Result
      J98-1 (CANH) -J98-12 (CANL) Cable disconnected from negative (-) battery terminal 54 to 69 Ω Below 54 Ω: Short circuit between bus lines
      70 Ω or more: Open circuit in main bus lines
      J98-1(CANH) - J12-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher Below 200 Ω: CANH short to ground
      J98-12(CANL) - J12-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher Below 200 Ω: CANL short to ground
      J98-1(CANH) - J12-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher Below 6 kΩ: CANH +B short
      J98-12(CANL) - J12-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher Below 6 kΩ: CANL +B short
      Result
      Result Proceed to
      OK A
      Open circuit in CAN main bus lines B
      Short circuit between bus lines C

      • Short to ground

      • +B short

      		 D

    B

    CHECK FOR OPEN IN CAN BUS MAIN WIRE (NO. 6 CAN JUNCTION CONNECTOR) Click here

    C

    CHECK FOR SHORT IN CAN BUS WIRES (NO. 6 CAN JUNCTION CONNECTOR) Click here

    D

    CHECK FOR SHORT IN CAN BUS WIRES (NO. 6 CAN JUNCTION CONNECTOR) Click here

    A

  4. CHECK HARNESS AND CONNECTOR (BLIND SPOT MONITOR SENSOR RH - BODY GROUND)


    1. Disconnect the W2 blind spot monitor sensor RH connector.

    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      W2-10 (BRGD) - Body ground Always Below 1 Ω
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  5. CHECK HARNESS AND CONNECTOR (BLIND SPOT MONITOR SENSOR RH POWER SOURCE)


    1. Disconnect the W2 blind spot monitor sensor RH connector.

    2. Measure the voltage according to the value(s) in the table below.

      Standard Voltage
      Tester Connection Condition Specified Condition
      W2-5 (BRB) - Body ground Engine switch on (IG)

      11 to 14 V*1

      10.5 to 16 V*2
      W2-5 (BRB) - Body ground Engine switch off Below 1 V

      • *1: w/o Stop and Start System

      • *2: w/ Stop and Start System

      Result
      Result Proceed to
      OK A
      NG (w/o Stop and Start System) B
      NG (w/ Stop and Start System) C

    B

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    C

    GO TO STOP AND START SYSTEM Click here

    A

  6. CHECK DTC


    1. Reconnect the cable to the negative (-) battery terminal.

    2. Turn the engine switch off.

    3. Turn the engine switch on (IG).

    4. Check for DTCs.

      Click here


      Body Electrical > Blind Spot Monitor Master > Trouble Codes
      OK
      No DTCs are output.
      Result
      Proceed to
      OK
      NG

    OK

    USE SIMULATION METHOD TO CHECK Click here

    NG

  7. REPLACE BLIND SPOT MONITOR SENSOR RH


    1. Replace the blind spot monitor sensor RH.

      Click here

      Result
      Proceed to
      NEXT

    NEXT

  8. RECHECK DTC


    1. Clear the DTCs.

      Click here


      Body Electrical > Blind Spot Monitor Master > Clear DTCs

    2. Recheck for DTCs and check if the same DTC is output again.


      Body Electrical > Blind Spot Monitor Master > Trouble Codes
      OK
      No DTCs are output.
      Result
      Proceed to
      OK
      NG

    OK

    END

    NG

    REPLACE BLIND SPOT MONITOR SENSOR LH Click here

  9. CHECK FOR OPEN IN CAN BUS MAIN WIRE (NO. 6 CAN JUNCTION CONNECTOR)


    1. B005QBTC05
      *a

      Front view of wire harness connector

      (to No. 6 CAN Junction Connector)
      *b to blind spot monitor sensor LH CAN main wire
      *c to blind spot monitor sensor RH CAN main wire

      Disconnect the J98 No. 6 CAN junction connector.

    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      J98-3 (CANH) - J98-14(CANL) Cable disconnected from negative (-) battery terminal 108 to 132 Ω
      J98-1 (CANH) - J98-12(CANL) Cable disconnected from negative (-) battery terminal 108 to 132 Ω
      Result
      Result Proceed to
      OK A
      NG (to blind spot monitor sensor LH CAN main wire) B
      NG (to blind spot monitor sensor RH CAN main wire) C

    A

    REPLACE NO. 6 CAN JUNCTION CONNECTOR

    C

    CHECK FOR OPEN IN CAN BUS MAIN WIRE (BLIND SPOT MONITOR SENSOR RH) Click here

    B

  10. CHECK FOR OPEN IN CAN BUS MAIN WIRE (BLIND SPOT MONITOR SENSOR LH)


    1. Reconnect the J98 No. 6 CAN junction connector.

    2. B005N3SC64
      *a

      Front view of wire harness connector

      (to blind spot monitor sensor LH)

      Disconnect the X2 blind spot monitor sensor LH connector.

    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      X2-1 (CA2P) - X2-6 (CA2N) Cable disconnected from negative (-) battery terminal 108 to 132 Ω
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE BLIND SPOT MONITOR SENSOR LH Click here

    NG

    REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (BLIND SPOT MONITOR SENSOR LH - NO. 6 CAN JUNCTION CONNECTOR)

  11. CHECK FOR OPEN IN CAN BUS MAIN WIRE (BLIND SPOT MONITOR SENSOR RH)


    1. Reconnect the J98 No. 6 CAN junction connector.

    2. B005N3SC65
      *a

      Front view of wire harness connector

      (to blind spot monitor sensor RH)

      Disconnect the W2 blind spot monitor sensor RH connector.

    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      W2-1 (CA2P) -W2-6 (CA2N) Cable disconnected from negative (-) battery terminal 108 to 132 Ω
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE BLIND SPOT MONITOR SENSOR RH Click here

    NG

    REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (BLIND SPOT MONITOR SENSOR RH - NO. 6 CAN JUNCTION CONNECTOR)

  12. CHECK FOR SHORT IN CAN BUS WIRES (NO. 6 CAN JUNCTION CONNECTOR)


    1. B005QBTC05
      *a

      Front view of wire harness connector

      (to No. 6 CAN Junction Connector)
      *b to blind spot monitor sensor LH CAN main wire
      *c to blind spot monitor sensor RH CAN main wire

      Disconnect the J98 No. 6 CAN junction connector.

    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      J98-3 (CANH) - J98-14(CANL) Cable disconnected from negative (-) battery terminal 108 to 132 Ω
      J98-1 (CANH) - J98-12(CANL) Cable disconnected from negative (-) battery terminal 108 to 132 Ω
      Result
      Result Proceed to
      OK A
      NG (to blind spot monitor sensor LH CAN main wire) B
      NG (to blind spot monitor sensor RH CAN main wire) C

    A

    REPLACE NO. 6 CAN JUNCTION CONNECTOR

    C

    CHECK FOR SHORT IN CAN BUS WIRES (BLIND SPOT MONITOR SENSOR RH) Click here

    B

  13. CHECK FOR SHORT IN CAN BUS WIRES (BLIND SPOT MONITOR SENSOR LH)


    1. Reconnect the J98 No. 6 CAN junction connector.

    2. B005N3SC64
      *a

      Front view of wire harness connector

      (to blind spot monitor sensor LH)

      Disconnect the X2 blind spot monitor sensor LH connector.

    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      X2-1 (CA2P) - X2-6 (CA2N) Cable disconnected from negative (-) battery terminal 108 to 132 Ω
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE BLIND SPOT MONITOR SENSOR LH Click here

    NG

    REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (BLIND SPOT MONITOR SENSOR LH - NO. 6 CAN JUNCTION CONNECTOR)

  14. CHECK FOR SHORT IN CAN BUS WIRES (BLIND SPOT MONITOR SENSOR RH)


    1. Reconnect the J98 No. 6 CAN junction connector.

    2. B005N3SC65
      *a

      Front view of wire harness connector

      (to blind spot monitor sensor RH)

      Disconnect the W2 blind spot monitor sensor RH connector.

    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      W2-1 (CA2P) -W2-6 (CA2N) Cable disconnected from negative (-) battery terminal 108 to 132 Ω
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE BLIND SPOT MONITOR SENSOR RH Click here

    NG

    REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (BLIND SPOT MONITOR SENSOR RH - NO. 6 CAN JUNCTION CONNECTOR)

  15. CHECK FOR SHORT IN CAN BUS WIRES (NO. 6 CAN JUNCTION CONNECTOR)


    1. Disconnect the J98 No. 6 CAN junction connector.

    2. Measure the resistance according to the value(s) in the table below.

      B005NLLC56
      *1 DLC3 - -
      *a

      Front view of wire harness connector

      (to No. 5 CAN Junction Connector)

      		 *b to blind spot monitor sensor LH CAN main wire
      *c to blind spot monitor sensor RH CAN main wire - -
      Standard Resistance
      Tester Connection Condition Specified Condition
      J98-3 (CANH) - J12-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher
      J98-14 (CANL) - J12-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher
      J98-3 (CANH) - J12-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher
      J98-14 (CANL) - J12-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher
      J98-1 (CANH) - J12-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher
      J98-12 (CANL) - J12-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher
      J98-1 (CANH) - J12-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher
      J98-12 (CANL) - J12-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher
      Result
      Result Proceed to
      OK A
      NG (to blind spot monitor sensor LH CAN main wire) B
      NG (to blind spot monitor sensor RH CAN main wire) C

    A

    REPLACE NO. 6 CAN JUNCTION CONNECTOR

    C

    CHECK FOR SHORT IN CAN BUS WIRES (BLIND SPOT MONITOR SENSOR RH) Click here

    B

  16. CHECK FOR SHORT IN CAN BUS WIRES (BLIND SPOT MONITOR SENSOR LH)


    1. Reconnect the J98 No. 6 CAN junction connector.

    2. Disconnect the X2 blind spot monitor sensor LH connector.

    3. B005MMGC01
      *1 DLC3
      *a

      Front view of wire harness connector

      (to blind spot monitor sensor LH)

      Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      X2-1 (CA2P) - J12-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher
      X2-6 (CA2N) - J12-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher
      X2-1 (CA2P) - J12-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher
      X2-6 (CA2N) - J12-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE BLIND SPOT MONITOR SENSOR LH Click here

    NG

    REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (BLIND SPOT MONITOR SENSOR LH - NO. 6 CAN JUNCTION CONNECTOR)

  17. CHECK FOR SHORT IN CAN BUS WIRES (BLIND SPOT MONITOR SENSOR RH)


    1. Reconnect the J98 No. 6 CAN junction connector.

    2. Disconnect the W2 blind spot monitor sensor RH connector.

    3. B005MMGC02
      *1 DLC3
      *a

      Front view of wire harness connector

      (to blind spot monitor sensor RH)

      Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      W2-1 (CA2P) - J12-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher
      W2-6 (CA2N) - J12-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher
      W2-1 (CA2P) - J12-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher
      W2-6 (CA2N) - J12-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE BLIND SPOT MONITOR SENSOR RH Click here

    NG

    REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (BLIND SPOT MONITOR SENSOR RH - NO. 6 CAN JUNCTION CONNECTOR)