Reverse Signal Circuit [12/2019 - 10/2022]: Procedure

Result

Result: 

B 

See step  5

Result: 

A 

See step  2

1. Enter the "Function Check/Setting I" mode and select "Vehicle Signal".

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   w/ Navigation System:

   Refer to OPERATION CHECK [12/2019 - 10/2022]

   w/ Audio and Visual System:

   Refer to OPERATION CHECK [12/2019 - 10/2022]

2. Check that the "REV" item on the display changes between ON and OFF according to the shift lever position.

   OK

   Shift Lever Position	Display
   R	ON
   Except R	OFF

   HINT: 

   This display is updated once per second. As a result, it is normal for the display to lag behind the actual shift lever position.

   Result

   Proceed to
   OK
   NG

Result: 

OK 

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to  PROBLEM SYMPTOMS TABLE [12/2019 - 10/2022] 

Result: 

NG 

See step  3

1. Remove the park/neutral position switch assembly.

   For UA80E:

   Refer to REMOVAL [12/2019 - 10/2022]

   For UA80F:

   Refer to REMOVAL [12/2019 - 10/2022]

2. Inspect the park/neutral position switch assembly.

   For UA80E:

   Refer to INSPECTION [12/2019 - 10/2022]

   For UA80F:

   Refer to INSPECTION [12/2019 - 10/2022]

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPLACE PARK/NEUTRAL POSITION SWITCH ASSEMBLY 

For UA80E:

Refer to REMOVAL [12/2019 - 10/2022]

For UA80F:

Refer to REMOVAL [12/2019 - 10/2022]

Result: 

OK 

See step  4

1. Disconnect the C52 park/neutral position switch assembly connector.
2. Disconnect the H1 radio and display receiver assembly connector.
3. Measure the voltage according to the value(s) in the table below.

   Standard Voltage

   Tester Connection	Switch Condition	Specified Condition
   C52-1 (RB) - Body ground	Ignition switch ON	11 to 14 V

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

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   C52-2 (RL) - H1-28 (REV)	Always	Below 1 Ω
   C52-2 (RL) - Body ground	Always	10 kΩ or higher

   Result

   Proceed to
   OK
   NG

Result: 

OK 

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to  PROBLEM SYMPTOMS TABLE [12/2019 - 10/2022] 

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

1. Enter the "Function Check/Setting I" mode and select "Vehicle Signal".

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   w/ Navigation System:

   Refer to OPERATION CHECK [12/2019 - 10/2022]

   w/ Audio and Visual System:

   Refer to OPERATION CHECK [12/2019 - 10/2022]

2. Check that the "REV" item on the display changes between ON and OFF according to the shift lever position.

   OK

   Shift Lever Position	Display
   R	ON
   Except R	OFF

   HINT: 

   This display is updated once per second. As a result, it is normal for the display to lag behind the actual shift lever position.

   Result

   Result	Proceed to
   OK	A
   NG (w/ Navigation System)	B
   NG (w/ Audio and Visual System)	C

Result: 

A 

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to  PROBLEM SYMPTOMS TABLE [12/2019 - 10/2022] 

Result: 

B 

GO TO NAVIGATION SYSTEM. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [12/2019 - 10/2022] 

Result: 

C 

GO TO AUDIO AND VISUAL SYSTEM. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [12/2019 - 10/2022]