TOYOTA PARKING ASSIST-SENSOR SYSTEM (w/ Multi-display) Clearance Warning ECU Power Source Circuit

DESCRIPTION

This circuit provides power to operate the clearance warning ECU.

WIRING DIAGRAM

INSPECTION PROCEDURE

PROCEDURE

1. CHECK HARNESS AND CONNECTOR (CLEARANCE WARNING ECU - BATTERY)

   
   
   1. 

      Text in Illustration

      *A	for 4 Sensor Type
      *B	for 8 Sensor Type
      *a	Front view of wire harness connector (to Clearance Warning ECU)

      Disconnect the clearance warning ECU connector.

   2. Measure the voltage according to the value(s) on the table below.

      Standard Voltage
      for 4 Sensor Type Tester Connection Switch Condition Specified Condition I1-15 (IG) - Body ground Engine switch on (IG) 11 to 14 V I1-15 (IG) - Body ground Engine switch off Below 1 V
      for 8 Sensor Type Tester Connection Switch Condition Specified Condition G154-15 (IG) - Body ground Engine switch on (IG) 11 to 14 V G154-15 (IG) - Body ground Engine switch off Below 1 V

   
   

   NG

   REPAIR OR REPLACE HARNESS OR CONNECTOR

   OK

2. CHECK HARNESS AND CONNECTOR (CLEARANCE WARNING ECU - BODY GROUND)

   
   
   1. 

      Text in Illustration

      *A	for 4 Sensor Type
      *B	for 8 Sensor Type
      *a	Front view of wire harness connector (to Clearance Warning ECU)

      Disconnect the clearance warning ECU connector.

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

      Standard Resistance
      for 4 Sensor Type Tester Connection Condition Specified Condition I1-17 (E) - Body ground Always Below 1 Ω
      for 8 Sensor Type Tester Connection Condition Specified Condition G154-17 (E) - Body ground Always Below 1 Ω

   
   

   NG

   REPAIR OR REPLACE HARNESS OR CONNECTOR

   OK

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