Toyota Tundra. Manual — part 204

Fig. 183: Identifying K9 And K3 Connectors Terminals
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

4. Measure the voltage between terminal SPD of the wire harness connector and body ground

when the drive wheels are turned slowly.

OK: Voltage pulses as shown in the illustration.

Result:

RESULT REFERENCE

Result

Proceed to

NG

A

OK (for Column Shift Type)

B

OK (for Floor Shift Type)

C

2009 Toyota Tundra

2009 ACCESSORIES AND EQUIPMENT Audio/Visual - Tundra

B: REPLACE RADIO RECEIVER (see REMOVAL )

C: REPLACE RADIO RECEIVER (see REMOVAL )

Fig. 184: Voltage Pulses Pattern
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

A: Go to next step.

3. CHECK HARNESS AND CONNECTOR (COMBINATION METER - RADIO RECEIVER)

a. Disconnect the K3*1 or K9*2 receiver connector.

HINT:



*1: for Built-in Type Amplifier System



*2: for Separate Type Amplifier System

b. Disconnect the J28 meter connector.

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

Standard resistance:

for Separate Type Amplifier System

TESTER CONNECTION SPECIFIED CONDITION

for Built-in Type Amplifier System

TESTER CONNECTION SPECIFIED CONDITION

Tester Connection

Condition Specified Condition

K9-4 (SPD) - J28-35 (+S)

Always

Below 1 ohms

K9-4 (SPD) - Body ground

10 kohms or higher

Tester Connection

Condition Specified Condition

K3-3 (SPD) - J28-35 (+S)

Always

Below 1 ohms

K3-3 (SPD) - Body ground

10 kohms or higher

2009 Toyota Tundra

2009 ACCESSORIES AND EQUIPMENT Audio/Visual - Tundra

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

Fig. 185: Checking Harness And Connector (Combination Meter - Radio Receiver)
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

OK: REPLACE COMBINATION METER (See REMOVAL )

STEERING PAD SWITCH CIRCUIT

DESCRIPTION

2009 Toyota Tundra

2009 ACCESSORIES AND EQUIPMENT Audio/Visual - Tundra

This circuit sends an operation signal from the steering pad switch to the radio receiver. If there is an open in
the circuit, the audio system cannot be operated using the steering pad switch. If there is a short in the circuit,
the same condition as when the switch is continuously depressed occurs. Therefore, the radio receiver cannot be
operated using the steering pad switch, and also the radio receiver itself cannot function.

WIRING DIAGRAM

Fig. 186: Steering Pad Switch - Wiring Diagram
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

INSPECTION PROCEDURE

1. INSPECT RADIO RECEIVER

a. Disconnect the K3 receiver connector.

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

Standard resistance

CAUTION: The vehicle is equipped with an SRS (Supplemental Restraint System)

which includes components such as airbags. Before servicing (including
removal or installation of parts), be sure to read the precautionary notice
for the SRS (see PRECAUTION ).

2009 Toyota Tundra

2009 ACCESSORIES AND EQUIPMENT Audio/Visual - Tundra