PARKING ASSIST MONITOR SYSTEM > ECU Power Source Circuit

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DESCRIPTION

This circuit is the power source circuit to operate the parking assist ECU. The parking assist ECU controls the parking assist monitor system. When a malfunction occurs in this circuit, the system will be abnormal.

HINT:
  1. The parking assist ECU is connected to other ECUs via CAN communication or AVC-LAN communication.
  2. If the parking assist ECU does not operate due to a power source problem, a navigation system DTC may be stored due to an AVC-LAN communication interruption.
  3. If the parking assist ECU does not operate due to a power source problem, other system DTCs may be stored due to a CAN communication interruption.


WIRING DIAGRAM


E222376E01


INSPECTION PROCEDURE

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

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

  1. Disconnect the H9 connector from the parking assist ECU.

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    H9-3 (GND1) - Body ground
    		Always
    		Below 1 Ω

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

    Standard Voltage:
    Tester Connection
    		Condition
    		Specified Condition
    H9-1 (+B) - H9-3 (GND1)
    		Power switch off
    		11 to 14 V



NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE (Click here)