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PARKING ASSIST MONITOR SYSTEM (w/ Side Monitor System), Diagnostic DTC:C1612

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DTC Code DTC Name
C1612 IG Voltage is Low or High
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DESCRIPTION

This DTC is stored if the parking assist ECU judges as a result of its self check that the voltage received by terminal IG is low or high.

DTC Code DTC Detection Condition Trouble Area
C1612

  • IG voltage is low

  • IG voltage is high

  • Harness or connector

  • Parking assist ECU
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WIRING DIAGRAM

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INSPECTION PROCEDURE

Note:

  • When "System initializing" is displayed on the parking assist ECU after the cable is disconnected from the negative (-) battery terminal, correct the steering angle neutral point (Click here).

  • Depending on the parts that are replaced or operations that are performed during vehicle inspection or maintenance, calibration of other systems as well as the parking assist monitor system may be needed (Click here).

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

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PROCEDURE


  1. Click here

    CHECK FOR DTC


    1. Clear the DTCs (Click here).

    2. Check for DTCs (Click here).

      OK
      DTC C1612 is not output.
      Tip:

      If the parking assist ECU cannot read the stored information when it is activated, allowing the ECU to store the information again may return the system to normal.


  2. Click here

    CHECK HARNESS AND CONNECTOR (PARKING ASSIST ECU - BATTERY AND BODY GROUND)


    1. A01DMM3E36

      Disconnect the parking assist ECU connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      I6-4 (GND1) - Body ground Always Below 1 Ω

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      I6-8 (IG) - I6-4 (GND1) Engine switch on (IG) 10 to 16 V
      Table 1. Text in Illustration
      *a

      Front view of wire harness connector

      (to Parking Assist ECU)
      Table 2. Result
      Proceed to Result
      OK (for LHD) A
      OK (for RHD) B
      NG C

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    REPLACE PARKING ASSIST ECUClick here

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    USE SIMULATION METHOD TO CHECKClick here

  5. Click here

    REPAIR OR REPLACE HARNESS OR CONNECTOR

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    REPLACE PARKING ASSIST ECUClick here