LEXUS PARKING ASSIST-SENSOR SYSTEM, Diagnostic DTC:C1AE6

DTC Code DTC Name
C1AE6 Rear Left Sensor Malfunction

DESCRIPTION

The rear corner ultrasonic sensor (rear left sensor) is installed on the front bumper. The clearance warning ECU assembly detects obstacles based on signals received from the rear corner ultrasonic sensor (rear left sensor). If the rear corner ultrasonic sensor (rear left sensor) has an open circuit or other malfunction, it will not function normally.

DTC No. Detection Item DTC Detection Condition Trouble Area
C1AE6 Rear Left Sensor Malfunction A malfunction of the rear corner ultrasonic sensor (rear left sensor).

  • Rear corner ultrasonic sensor (rear left sensor)

  • Harness or connector

  • Clearance warning ECU assembly

WIRING DIAGRAM

B000WZGE28

CAUTION / NOTICE / HINT

Note

If DTCs are output after repairs, turn the engine switch on (IG) and the LEXUS parking assist-sensor system on. Then clear the DTCs.

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PROCEDURE


  1. INSPECT REAR CORNER ULTRASONIC SENSOR (REAR LEFT SENSOR)


    1. Remove the rear corner ultrasonic sensor (rear left sensor).

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    2. Inspect the rear corner ultrasonic sensor (rear left sensor).

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      Result
      Proceed to
      OK
      NG

    NG

    REPLACE REAR CORNER ULTRASONIC SENSOR (REAR LEFT SENSOR) Click here

    OK

  2. CHECK HARNESS AND CONNECTOR (REAR CORNER ULTRASONIC SENSOR [REAR LEFT SENSOR] - CLEARANCE WARNING ECU ASSEMBLY)


    1. Disconnect the c3 rear corner ultrasonic sensor (rear left sensor) connector.

    2. Disconnect the X12 clearance warning ECU assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      c3-2 (S) - X12-3 (S2) Always Below 1 Ω
      c3-1 (E) - X12-4 (E2) Always Below 1 Ω
      c3-2 (S) - Body ground Always 10 kΩ or higher
      c3-1 (E) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE CLEARANCE WARNING ECU ASSEMBLY Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR