Toyota Tundra Service Manual: Reverse Signal Circuit

Toyota Tundra Service Manual / Audio, Visual, Telematics / Navigation / Multi Info Display / Navigation System / Reverse Signal Circuit

DESCRIPTION

The navigation 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 inspection procedure.

PROCEDURE

1.	CHECK VEHICLE SIGNAL (OPERATION CHECK)

(a) Enter the "Vehicle Signal Check Mode" screen. [Refer to check Vehicle Signal in Operation Check (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.

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

2.	CHECK NAVIGATION RECEIVER ASSEMBLY

(a) Disconnect the navigation receiver assembly connector.

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

Standard Voltage:

Tester Connection	Switch Condition	Specified Condition
J135-2 (REV) - Body ground	Ignition switch ON, shift lever in R	7.5 to 14 V
J135-2 (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 Navigation Receiver Assembly)

Result

Result	Proceed to
OK (for Column Shift Type)	A
OK (for Floor Shift Type)	B
NG	C

REPLACE NAVIGATION RECEIVER ASSEMBLY

3.	CHECK HARNESS AND CONNECTOR (NAVIGATION RECEIVER ASSEMBLY - PARK/NEUTRAL POSITION SWITCH ASSEMBLY)

(a) Disconnect the J135 navigation receiver assembly connector.

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

Standard Resistance:

Tester Connection	Condition	Specified Condition
J135-2 (REV) - D35-1 (RL)	Always	Below 1 Ω
J135-2 (REV) - Body ground	Always	10 kΩ or higher

REPAIR OR REPLACE HARNESS OR CONNECTOR

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:

If replacing the park/neutral position switch assembly, refer to the procedures below.

for A760E: See page
for A760F: See page
for AB60E: See page
for AB60F: See page

REPLACE PARK/NEUTRAL POSITION SWITCH ASSEMBLY

REPAIR OR REPLACE HARNESS OR CONNECTOR

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Toyota Tundra Service Manual: Reverse Signal Circuit

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