Toyota Tundra. Manual — part 581

Component table

POWER SOURCE CIRCUIT OF COMPONENT SHOWN BY SUB-CODE COMPONENT
CHART

If the power source circuit is operating normally, proceed to the next step.

3. CHECK NAVIGATION RECEIVER

a. Disconnect the K18 and K8 receiver connectors.

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

Standard resistance

NAVIGATION RECEIVER TESTER CONNECTION SPECIFIED CONDITION

Fig. 440: Identifying K18 And K8 Receiver Connectors
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

Component

Proceed to

Navigation receiver (140)

NAVIGATION RECEIVER ASSEMBLY
POWER SOURCE CIRCUIT

Stereo component amplifier (440)

STEREO COMPONENT AMPLIFIER
POWER SOURCE CIRCUIT

Tester Connection

Condition Specified Condition

K18-5 (ATX+) - K18-15 (ATX-)

Always

60 to 80 ohms

K8-9 (TXM+) - K8-10 (TXM-)

2009 Toyota Tundra

2009 ACCESSORIES AND EQUIPMENT Navigation - Tundra

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

4. CHECK HARNESS AND CONNECTOR (NAVIGATION RECEIVER - COMPONENT SHOWN

BY SUB-CODE)

HINT:



Start the check from the circuit that is near the component shown by the sub-code first.



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

a. Referring to the AVC-LAN wiring diagram below, check the AVC-LAN circuit between the

navigation receiver and the component shown by the sub-code.

1. Disconnect all connectors between the navigation receiver and the components shown by the

subcode.

b. Check for an open or short in the AVC-LAN circuit between the navigation receiver and the

component shown by the sub-code.

OK: There is no open or short circuit.

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

Fig. 441: AVC-LAN Wiring Diagram
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

OK: Go to Next Step

5. REPLACE COMPONENT SHOWN BY SUB-CODE

a. Replace the component shown by the sub-code with a normal one and check if the same problem

occurs again.

OK: Same problem does not occur.

Result

COMPONENT SHOWN BY SUB-CODE RESULT CHART

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

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

A: END

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

NAVIGATION RECEIVER ASSEMBLY POWER SOURCE CIRCUIT

DESCRIPTION

The circuit provides power to the navigation receiver.

WIRING DIAGRAM

Fig. 442: Navigation Receiver Assembly Power Source Circuit - Wiring Diagram
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

INSPECTION PROCEDURE

1. INSPECT FUSE (RAD NO. 1, ACC)

a. Disconnect the ACC fuse from the main body ECU.

b. Disconnect the RAD NO. 1 fuse from the engine room junction block.

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

Standard resistance

FUSE (RAD NO. 1, ACC) TESTER CONNECTION SPECIFIED CONDITION

NG: REPLACE FUSE

OK: Go to Next Step

Tester Connection Condition Specified Condition

RAD NO. 1 fuse

Always

Below 1 ohms

ACC fuse

2009 Toyota Tundra

2009 ACCESSORIES AND EQUIPMENT Navigation - Tundra