MULTI-TERRAIN MONITOR SYSTEM, Diagnostic DTC:C1612

DTC Code DTC Name
C1612 IG Voltage is Low or High

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

WIRING DIAGRAM

B001HS3E06
*a from IG NO. 1 Relay
*b ECU-IG NO. 2
*c Parking Assist ECU

CAUTION / NOTICE / HINT

Note


  • When "!" mark is displayed on the navigation receiver assembly*1 or radio and display receiver assembly*2 after the cable is disconnected from the negative (-) battery terminal, correct the steering angle neutral point.

    Click here.


    • *1: for Navigation Receiver Type

    • *2: for Radio and Display Type

  • 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 multi-terrain monitor system may be needed Click here.

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

PROCEDURE


  1. CHECK FOR DTC


    1. Clear the DTCs Click here.

    2. Check for DTCs Click here.

      OK
      DTC C1612 is not output.

      Tech Tips

      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.


    OK

    USE SIMULATION METHOD TO CHECK Click here

    NG

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


    1. B001F0QE03
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Parking Assist ECU)

      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) 11 to 14 V
      I6-8 (IG) - I6-4 (GND1) Engine switch off Below 1 V

    OK

    REPLACE PARKING ASSIST ECU for LHD: REPLACE PARKING ASSIST ECU Click here
    REPLACE PARKING ASSIST ECU for RHD: REPLACE PARKING ASSIST ECU Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR