ELECTRIC PARKING BRAKE SYSTEM, Diagnostic DTC:C1207

DTC Code DTC Name
C1207 Gear Position Signal Malfunction

DESCRIPTION

The skid control ECU (brake actuator assembly) detects shift position signal malfunctions.

DTC No. Detection Item DTC Detection Condition Trouble Area Memory Note
C1207 Gear Position Signal Malfunction

Any of the following is detected:


  • Neutral position switch open or short circuit is detected for 0.1 seconds or more

  • Neutral position switch power supply voltage and +BS terminal voltage are judged to be abnormal for 0.1 seconds or more.

  • Neutral position switch

  • Wire harness or connector

  • Skid control ECU (brake actuator assembly)

 DTC stored An electric parking brake system malfunction is displayed on the multi-information display.
DTC Detection Conditions
Vehicle Condition
Pattern 1 Pattern 2 Pattern 3
Diagnosis Condition - - - -
Malfunction Status Neutral position switch open circuit is detected ○ - -
Neutral position switch short circuit is detected - ○ -
Neutral position switch power supply voltage and +BS terminal voltage are judged to be abnormal - - ○
Detection Time 0.1 seconds or more 0.1 seconds or more 0.1 seconds or more
Number of Trips 1 trip 1 trip 1 trip

WIRING DIAGRAM

A001WQVE02

CAUTION / NOTICE / HINT

Note


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

  • The electric parking brake may still operate up to 20 seconds after the ignition switch is turned off. Before disconnecting connectors or fuses, turn the ignition switch off and wait 20 seconds or more.

  • When replacing the skid control ECU (brake actuator assembly), operate the electric parking brake switch (electric parking brake switch assembly) as the parking brake indicator light blinks (red) when the ignition switch is first turned to ON.

PROCEDURE


  1. CHECK DTC


    1. Check for DTCs.

      Click here


      Chassis > ABS/VSC/TRC/EPB > Trouble Codes
      Result
      Result Proceed to
      Only DTC C1207 is output A
      DTCs C1207 and C1241 are output B
      DTCs C1207 and C1417 are output C

    B

    GO TO VEHICLE STABILITY CONTROL SYSTEM Click here

    C

    GO TO VEHICLE STABILITY CONTROL SYSTEM Click here

    A

  2. CHECK SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY) (TERMINAL VOLTAGE)


    1. Disconnect the neutral position switch connector.

    2. A001X76C01
      *a

      Front view of wire harness connector

      (to Neutral Position Switch)

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      C61-1 (W) - C61-2 (TMN) Ignition switch ON 4.5 to 5.5 V
      Result
      Result Proceed to
      OK A
      NG B

    B

    CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY) - NEUTRAL POSITION SWITCH) Click here

    A

  3. INSPECT SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY)


    1. Disconnect the A42 skid control ECU (brake actuator assembly) connector.

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

      A005P40C03
      *a

      Component with harness connected

      (Skid Control ECU (Brake Actuator Assembly))

      		 - -
      Standard Resistance
      Tester Connection Condition Specified Condition
      A42-27 (NVCC) - A42-29 (NGND) Always 995 to 1005 Ω
      Result
      Result Proceed to
      OK A
      NG (for LHD) B
      NG (for RHD) C

    B

    REPLACE SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY) Click here

    C

    REPLACE SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY) Click here

    A

  4. CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY) - NEUTRAL POSITION SWITCH)


    1. Disconnect the A42 skid control ECU (brake actuator assembly) connector.

    2. Disconnect the C61 neutral position switch connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A42-29 (NGND) - C61-3 (F+) Always Below 1 Ω
      A42-29 (NGND) or C61-3 (F+) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  5. CHECK HARNESS AND CONNECTOR (SHORT TO B+)


    1. Disconnect the A42 skid control ECU (brake actuator assembly) connector.

    2. Disconnect the C61 neutral position switch connector.

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      A42-29 (NGND) or C61-3 (F+) - Body ground Ignition switch ON Below 1 V
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE NEUTRAL POSITION SWITCH Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  6. CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY) - NEUTRAL POSITION SWITCH)


    1. Disconnect the A42 skid control ECU (brake actuator assembly) connector.

    2. Disconnect the C61 neutral position switch connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A42-27 (NVCC) - C61-1 (W1) Always Below 1 Ω
      A42-45 (NSIG) - C61-2 (TMN) Always Below 1 Ω
      A42-27 (NVCC) or C61-1 (W1) - Body ground and other terminals Always 10 kΩ or higher
      A42-45 (NSIG) or C61-2 (TMN) - Body ground and other terminals Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  7. CHECK HARNESS AND CONNECTOR (SHORT TO B+)


    1. Disconnect the A42 skid control ECU (brake actuator assembly) connector.

    2. Disconnect the C61 neutral position switch connector.

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      A42-27 (NVCC) or C61-1 (W1) - Body ground Ignition switch ON Below 1 V
      A42-45 (NSIG) or C61-2 (TMN) - Body ground Ignition switch ON Below 1 V
      Result
      Result Proceed to
      OK (for LHD) A
      OK (for RHD) B
      NG C

    A

    REPLACE SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY) Click here

    B

    REPLACE SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY) Click here

    C

    REPAIR OR REPLACE HARNESS OR CONNECTOR