Toyota Tundra Service Manual: Reverse Signal Circuit

DESCRIPTION

The radio and display receiver assembly receives a reverse signal from the park/neutral position switch assembly.

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

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

PROCEDURE

1.

CHECK VEHICLE SIGNAL (OPERATION CHECK)

(a) Enter the "Function Check/Setting I" mode and select "Vehicle Signal" (See page ).

(b) Check that 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.

OK

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

NG

2.

CHECK RADIO AND DISPLAY RECEIVER ASSEMBLY

(a) Disconnect the radio and display receiver assembly connector.

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

Standard Voltage:

Tester Connection

Condition

Specified Condition

J139-2 (REV) - Body ground

Ignition switch ON, shift lever in R

7.5 to 14 V

J139-2 (REV) - Body ground

Ignition switch ON, shift lever not in R

Below 1 V

Text in Illustration

*a

Front view of wire harness connector

(to Radio and Display Receiver Assembly)

Result

Result

Proceed to

OK (for Column Shift Type)

A

OK (for Floor Shift Type)

B

NG

C

A

REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY

B

REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY

C

3.

CHECK HARNESS AND CONNECTOR (RADIO AND DISPLAY RECEIVER ASSEMBLY - PARK/NEUTRAL POSITION SWITCH ASSEMBLY)

(a) Disconnect the J139 radio and display receiver assembly connector.

(b) Disconnect the D35 park/neutral position switch assembly connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

J139-2 (REV) - D35-1 (RL)

Always

Below 1 Ω

J139-2 (REV) - Body ground

Always

10 kΩ or higher

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

4.

CHECK HARNESS AND CONNECTOR (PARK/NEUTRAL POSITION SWITCH ASSEMBLY - BATTERY)

(a) Disconnect the park/neutral position switch assembly connector.

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

Standard Voltage:

Tester Connection

Switch Condition

Specified Condition

D35-2 (RB) - Body ground

Ignition switch ON

11 to 14 V

Text in Illustration

*a

Front view of wire harness connector

(to Park/Neutral Position Switch Assembly)

HINT:

*: Replace park/neutral position switch assembly procedure

  • for A760E:
  • for A760F:
  • for AB60E:
  • for AB60F:
OK

REPLACE PARK/NEUTRAL POSITION SWITCH ASSEMBLY*

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

    Problem Symptoms Table

    Screen Flicker or Color Distortion

    See More:

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    General InformationGENERAL INFORMATION 1. GENERAL DESCRIPTION (a) This manual is written in accordance with SAE J2008. (1) Diagnosis (2) Removing / Installing, Replacing, Disassembling / Reassembling, Checking and Adjusting (3) Final Inspection (b) The following procedures are omitted from this man ...

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