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DTC    C1612    IG Voltage is Low or High

for Preparation Click here


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 not normal.

DTC No.
DTC Detection Condition
Trouble Area
C1612
  1. IG voltage is low
  2. IG voltage is high
  1. Harness or connector
  2. Parking assist ECU

WIRING DIAGRAM


E222376E12


INSPECTION PROCEDURE

NOTICE:
  1. When the "System initializing" message is displayed on the navigation ECU sub-assembly after the auxiliary battery cable has been disconnected, correct the steering angle neutral point (Click here).
  2. 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 intelligent parking assist system may be needed (Click here).
  3. Inspect the fuse for circuits related to this system before performing the following inspection procedure.

1.CHECK DTC OUTPUT

  1. Clear the DTCs (Click here).

  1. Check for DTCs (Click here).

    Result:
    Result
    		Proceed to
    DTC C1612 is output
    		A
    DTCs are not output
    		B

HINT:
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.



B
USE SIMULATION METHOD TO CHECK (Click here)
A


2.CHECK HARNESS AND CONNECTOR (PARKING ASSIST ECU IG VOLTAGE)


    E228133E06

  1. Disconnect the L152 connector from the parking assist ECU.

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

    Standard Voltage:
    Tester Connection
    		Condition
    		Specified Condition
    L152-8 (IG) - L152-4 (GND1)
    		Power switch on (IG)
    		11 to 14 V

    Text in Illustration 
    *a
    		Front view of wire harness connector
    (to Parking Assist ECU)



NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

REPLACE PARKING ASSIST ECU (Click here)