Toyota Parking Assist-Sensor System (W/ Multi-Display) Reverse Signal Circuit

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK CLEARANCE WARNING ECU

INSPECT PARK/NEUTRAL POSITION SWITCH ASSEMBLY

CHECK HARNESS AND CONNECTOR (PARK/NEUTRAL POSITION SWITCH - CLEARANCE WARNING ECU AND BATTERY)

INSPECT BACK-UP LIGHT SWITCH ASSEMBLY

CHECK HARNESS AND CONNECTOR (BACK-UP LIGHT SWITCH ASSEMBLY - CLEARANCE WARNING ECU AND BATTERY)

DESCRIPTION

1. *1: for Automatic Transmission
   
2. *2: for Manual Transmission
   

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) in the table below.
   
   

   Standard Voltage:

   for 4 Sensor Type

   Tester Connection	Condition	Specified Condition
   I1-8 (RL) - Body ground	Engine switch on (IG) Shift lever in R	11 to 14 V
   I1-8 (RL) - Body ground	Engine switch on (IG) Shift lever in any position except R	Below 1 V

   for 8 Sensor Type

   Tester Connection	Condition	Specified Condition
   G154-8 (RL) - Body ground	Engine switch on (IG) Shift lever in R	11 to 14 V
   G154-8 (RL) - Body ground	Engine switch on (IG) Shift lever in any position except R	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)

   Result

   Result	Proceed to
   OK	A
   NG (for Automatic Transmission)	B
   NG (for Manual Transmission)	C

1. Remove the park/neutral position switch assembly.
   

   1. for AC60F: LandCruiser RM000000O5O01MX.html
      
   2. for A750F: LandCruiser RM0000010NC089X.html
      

2. Inspect the park/neutral position switch assembly.
   

   1. for AC60F: LandCruiser RM000000OD401HX.html
      
   2. for A750F: LandCruiser RM000002BKX04GX.html
      

   Result

   Result	Proceed to
   OK	A
   NG (for AC60F)	B
   NG (for A750F)	C

1. Disconnect the C40 park/neutral position switch assembly connector.
   

2. Disconnect the I1*1 or G154*2 clearance warning ECU connector.
   

   1. *1: for 4 Sensor Type
      
   2. *2: for 8 Sensor Type
      

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

   Standard Voltage:

   Tester Connection	Switch Condition	Specified Condition
   C40-2 (RB) - Body ground	Engine switch on (IG)	11 to 14 V

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

   Standard Resistance:

   for 4 Sensor Type

   Tester Connection	Condition	Specified Condition
   I1-8 (RL) - C40-1 (RL)	Always	Below 1 Ω
   I1-8 (RL) - Body ground	Always	10 kΩ or higher

   for 8 Sensor Type

   Tester Connection	Condition	Specified Condition
   G154-8 (RL) - C40-1 (RL)	Always	Below 1 Ω
   G154-8 (RL) - Body ground	Always	10 kΩ or higher

1. Remove the back-up light switch assembly.
   

   1. for R150F: LandCruiser RM0000046SW00QX.html
      
   2. for RA61F: LandCruiser RM0000047AR005X.html
      
   3. for G52F: LandCruiser RM00000471D00HX.html
      

2. Inspect the back-up light switch assembly.
   

   1. for R150F: LandCruiser RM0000046SU00QX.html
      
   2. for RA61F: LandCruiser RM0000047AP005X.html
      
   3. for G52F: LandCruiser RM00000471B00HX.html
      

   Result

   Result	Proceed to
   OK	A
   NG (for R150F)	B
   NG (for RA61F)	C
   NG (for G52F)	D

1. Disconnect the C41 back-up light switch assembly connector.
   

2. Disconnect the I1*1 or G154*2 clearance warning ECU connector.
   

   1. *1: for 4 Sensor Type
      
   2. *2: for 8 Sensor Type
      

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

   Standard Voltage:

   Tester Connection	Switch Condition	Specified Condition
   C41-2 - Body ground	Engine switch on (IG)	11 to 14 V

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

   Standard Resistance:

   for 4 Sensor Type

   Tester Connection	Condition	Specified Condition
   I1-8 (RL) - C41-1	Always	Below 1 Ω
   I1-8 (RL) - Body ground	Always	10 kΩ or higher

   for 8 Sensor Type

   Tester Connection	Condition	Specified Condition
   G154-8 (RL) - C41-1	Always	Below 1 Ω
   G154-8 (RL) - Body ground	Always	10 kΩ or higher