Toyota Parking Assist-Sensor System (W/ Multi-Display) Clearance Warning Ecu Power Source Circuit

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK HARNESS AND CONNECTOR (CLEARANCE WARNING ECU - BATTERY)

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

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

NOTICE:

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

1. 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

   Text in Illustration

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

1. 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

   Text in Illustration

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