Toyota Tundra. Manual — part 520

Fig. 206: Identifying K7 Receiver Connector And W7 Console Connector
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

3. CHECK NAVIGATION RECEIVER (MACC VOLTAGE)

a. Reconnect the K7 receiver connector.

Fig. 207: Identifying K7 Receiver Connector
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

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

K7-17 (MACC) -Body ground

Always

10 kohms or higher

K7-19 (MIC+) - Body ground

K7-20 (MIC-) - Body ground

2009 Toyota Tundra

2009 ACCESSORIES AND EQUIPMENT Navigation - Tundra

Standard voltage

NAVIGATION RECEIVER (MACC VOLTAGE) TESTER CONNECTION SPECIFIED
CONDITION

Result

NAVIGATION RECEIVER (MACC VOLTAGE) 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. REPLACE MICROPHONE AMPLIFIER WITH ANOTHER AND CHECK

a. Replace the microphone amplifier with a normal one (see REMOVAL ).

b. Check if the same problem occurs again.

OK: Malfunction disappears

NG: REPLACE ROOF CONSOLE BOX ASSEMBLY (See REMOVAL )

OK: END (MICROPHONE AMPLIFIER IS FAULTY)

STEREO COMPONENT AMPLIFIER COMMUNICATION ERROR

INSPECTION PROCEDURE

1. IDENTIFY COMPONENT SHOWN BY SUB-CODE

a. Enter the diagnostic mode.

b. Press the "LAN Mon" switch to change to "LAN Monitor" mode.

c. Identify the component shown by the sub-code.

HINT:



"140 (navigation receiver)" is the component shown by the sub-code in the example shown in
the illustration.



The sub-code will be indicated by its physical address.

Tester Connection

Switch Condition Specified Condition

K7-17 (MACC) - Body ground Ignition switch ACC

4 to 6V

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



For the component list, refer to "DIAGNOSIS DISPLAY DETAILED DESCRIPTION" .

Fig. 208: Display - System Check Mode
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

2. CHECK POWER SOURCE CIRCUIT OF COMPONENT SHOWN BY SUB-CODE

a. Inspect the power source circuit of the component shown by the sub-code.

Component table

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

Component

Proceed to

Navigation receiver (140)

NAVIGATION RECEIVER ASSEMBLY
POWER SOURCE CIRCUIT

2009 Toyota Tundra

2009 ACCESSORIES AND EQUIPMENT Navigation - Tundra

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

3. INSPECT NAVIGATION RECEIVER

a. Disconnect the K18 receiver connector.

Fig. 209: 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

4. CHECK HARNESS AND CONNECTOR (STEREO COMPONENT AMPLIFIER -

COMPONENT SHOWN BY SUB-CODE)

HINT:



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

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