Toyota Tundra. Manual — part 218
Fig. 237: Identifying W7 And K9 Connectors Terminals
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
OK: Go to next step.
3. CHECK RADIO RECEIVER (MCVD VOLTAGE)
a. Measure the voltage according to the value(s) in the table below.
Standard voltage
TESTER CONNECTION SPECIFIED CONDITION
Result:
RESULT REFERENCE
Tester Connection
Switch Condition Specified Condition
K9-7 (MCVD) - Body ground Ignition switch ON
4 to 6 V
Result
Proceed to
OK
A
NG (for Column Shift Type)
B
2009 Toyota Tundra
2009 ACCESSORIES AND EQUIPMENT Audio/Visual - Tundra
B: REPLACE RADIO RECEIVER (see REMOVAL )
C: REPLACE RADIO RECEIVER (see REMOVAL )
Fig. 238: Identifying Radio Receiver Connector Terminals
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
A: Go to next step.
4. REPLACE MICROPHONE WITH ANOTHER AND CHECK
a. Replace the microphone with a normal one (see REMOVAL ).
b. Check if the same problem occurs again.
OK: Malfunction disappears.
NG: REPLACE MICROPHONE AMPLIFIER ASSEMBLY (see REMOVAL )
OK: END (MICROPHONE IS FAULTY)
RADIO RECEIVER COMMUNICATION ERROR
INSPECTION PROCEDURE
1. IDENTIFY COMPONENT SHOWN BY SUB-CODE
a. Enter the diagnostic mode.
NG (for Floor Shift Type)
C
2009 Toyota Tundra
2009 ACCESSORIES AND EQUIPMENT Audio/Visual - Tundra
Fig. 239: Service Check Mode And Detailed Information Diagnostic Mode Flow Chart
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
b. Press the preset switch "3" to change to "Detailed Information Mode".
c. Identify the component shown by the sub-code.
HINT:
"190 (radio receiver)" is the component shown by the subcode in the example shown in the
illustration.
For details of the DTC display, refer to "DTC CHECK / CLEAR" .
2. CHECK COMPONENT SHOWN BY SUB-CODE
a. Select the component which has stored this code.
HINT:
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2009 ACCESSORIES AND EQUIPMENT Audio/Visual - Tundra
The "Bluetooth" handsfree module is built into the radio receiver. If there is a problem between the
"Bluetooth" handsfree module and radio receiver, replace the radio receiver.
Component table:
COMPONENT TABLE
A: REPLACE RADIO RECEIVER (see REMOVAL )
B: REPLACE RADIO RECEIVER (see REMOVAL )
C: Go to next step.
3. CHECK POWER SOURCE CIRCUIT OF COMPONENT SHOWN BY SUB-CODE
a. Inspect the power source circuit of the component shown by the sub-code.
If the power source circuit is operating normally, proceed to the next step.
Component table:
COMPONENT TABLE
4. INSPECT RADIO RECEIVER
a. Disconnect the K4 and K22* receiver connectors.
b. Measure the resistance according to the value(s) in the table below.
Standard resistance
TESTER CONNECTION SPECIFIED CONDITION
Component
Proceed to
"Bluetooth" handsfree module (for Column Shift Type)
A
"Bluetooth" handsfree module (for Floor Shift Type)
B
Except "Bluetooth" handsfree module
C
Component
Proceed to
Stereo component
amplifier (440)
Stereo component amplifier power source circuit (see STEREO
COMPONENT AMPLIFIER POWER SOURCE CIRCUIT )
Television display
(1B0)*
Television display assembly power source circuit (see TELEVISION
DISPLAY POWER SOURCE CIRCUIT )
HINT:
*: w/ Rear Seat Entertainment System
Tester Connection
Condition Specified Condition
K4-5 (ATX+) - K4-15 (ATX-)
Always
60 to 80 ohms
K22-9 (TXM+) - K22-10 (TXM-)* Always
60 to 80 ohms
HINT:
2009 Toyota Tundra
2009 ACCESSORIES AND EQUIPMENT Audio/Visual - Tundra
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