Toyota Tundra. Manual — part 518

Fig. 197: Identifying K5 Receiver Connector And J7 Adapter Connector
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS
TABLE

AVC-LAN CIRCUIT

DESCRIPTION

Each unit of the navigation system connected to the AVC-LAN (communication bus) transfers the signal of
each switch by communication.

When a short to +B or short to ground occurs in this AVC-LAN, the navigation system will not function
normally as the communication is discontinued.

INSPECTION PROCEDURE

1. CHECK NAVIGATION RECEIVER

a. Disconnect the K18 receiver connector.

2009 Toyota Tundra

2009 ACCESSORIES AND EQUIPMENT Navigation - Tundra

Fig. 198: Identifying K18 Receiver Connector
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

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

Standard resistance

NAVIGATION RECEIVER TESTER CONNECTION SPECIFIED CONDITION

Result

NAVIGATION RECEIVER RESULT CHART

B: REPLACE NAVIGATION RECEIVER (see REMOVAL (For Column Shift Type) )

C: REPLACE NAVIGATION RECEIVER (see REMOVAL (For Floor Shift Type) )

A: Go to Next Step

2. CHECK HARNESS AND CONNECTOR

HINT:

For details of the connectors, refer to "TERMINALS OF ECU" .

a. Referring to the AVC-LAN wiring diagram below, check all AVC-LAN circuits.

1. Disconnect all connectors in all AVC-LAN circuits.

2. Check for an open or short in all AVC-LAN circuits.

Tester Connection Condition Specified Condition

5(ATX+)-15(ATX-) Always

60 to 80 ohms

Result

Proceed to

OK

A

NG (for Column Shift Type)

B

NG (for Floor Shift Type)

C

2009 Toyota Tundra

2009 ACCESSORIES AND EQUIPMENT Navigation - Tundra

OK: There is no open or short circuit.

Fig. 199: AVC-LAN Wiring Diagram
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS
TABLE

REVERSE SIGNAL CIRCUIT

DESCRIPTION

The navigation receiver receives a reverse signal from the park / neutral position and information about the
navigation antenna, and then adjusts vehicle position.

WIRING DIAGRAM

Fig. 200: Reverse Signal Circuit - Wiring Diagram

2009 Toyota Tundra

2009 ACCESSORIES AND EQUIPMENT Navigation - Tundra

Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

INSPECTION PROCEDURE

1. CHECK NAVIGATION RECEIVER

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

Standard voltage

NAVIGATION RECEIVER TESTER CONNECTION SPECIFIED CONDITION

Fig. 201: Identifying K6 Navigation Receiver Connector
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

Result

NAVIGATION RECEIVER RESULT CHART

B: REPLACE NAVIGATION RECEIVER (see REMOVAL (For Column Shift Type) )

C: REPLACE NAVIGATION RECEIVER (see REMOVAL (For Floor Shift Type) )

A: Go to Next Step

2. CHECK HARNESS AND CONNECTOR (PARK / NEUTRAL POSITION SWITCH

NAVIGATION RECEIVER AND BATTERY)

a. Disconnect the K6 receiver connector.

Tester Connection

Switch Condition

Specified Condition

K6-S (REV) - Body ground

Ignition switch ACC, shift lever in R position

11 to 14 V

Ignition switch ACC, shift lever in P position

Below 1 V

Result

Proceed to

OK

A

NG (for Column Shift Type)

B

NG (for Floor Shift Type)

C

2009 Toyota Tundra

2009 ACCESSORIES AND EQUIPMENT Navigation - Tundra