Toyota Tundra. Manual — part 161

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

Fig. 66: Identifying J45 Connector Terminals
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

OK: Go to Next Step

3. INSPECT STEERING PAD SWITCH ASSEMBLY

Fig. 67: Inspecting Steering Pad Switch Assembly
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

a. Disconnect the z3 switch connector.

b. Connect the positive (+) lead to terminal IL+2 and the negative (-) lead to terminal EAU of the

steering pad switch assembly connector.

c. Check if the illumination for the steering pad switch assembly comes on.

OK: Illumination for the steering pad switch assembly comes on.

NG: REPLACE STEERING PAD SWITCH ASSEMBLY (see REMOVAL )

2009 Toyota Tundra

2009 ACCESSORIES AND EQUIPMENT Audio/Visual - Tundra

OK: Go to Next Step

4. INSPECT SPIRAL CABLE

a. Disconnect the z3 switch connector.

b. Disconnect the J45 cable connector.

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

Standard resistance

TESTER CONNECTION SPECIFIED CONDITION

NG: REPLACE SPIRAL CABLE (See REMOVAL )

Tester Connection

Condition

Specified

Condition

z3-8 (EAU) - J45-4

(EAU)

Spiral cable is turned 2.5 rotations

counterclockwise

Below 1 ohms

Spiral cable is centered

Spiral cable is turned 2.5 rotations clockwise

z3-5(IL+2) - J45-12

(IL+2)

Spiral cable is turned 2.5 rotations

counterclockwise

Spiral cable is centered

Spiral cable is turned 2.5 rotations clockwise

CAUTION: The spiral cable is an important part of the SRS airbag system.

Incorrect removal or installation of the spiral cable may prevent
the airbag from deploying. Be sure to read the PRECAUTION for
the SRS (see PRECAUTION ).

2009 Toyota Tundra

2009 ACCESSORIES AND EQUIPMENT Audio/Visual - Tundra

Fig. 68: Identifying z3 And J45 Connectors Terminals
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

OK: Go to Next Step

5. CHECK HARNESS AND CONNECTOR (SPIRAL CABLE - RADIO RECEIVER)

a. Disconnect the K3 receiver connector.

b. Disconnect the J45 cable connector.

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

Standard resistance

TESTER CONNECTION SPECIFIED CONDITION

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

Tester Connection

Condition Specified Condition

K3-6 (SWG) - J45-4 (EAU) Always

Below 1 ohms

K3-6 (SWG) - Body ground Always

10 kohms or higher

2009 Toyota Tundra

2009 ACCESSORIES AND EQUIPMENT Audio/Visual - Tundra

Fig. 69: Identifying K3 And J45 Connectors Terminals
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

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

6. CHECK HARNESS AND CONNECTOR (BATTERY - RADIO RECEIVER)

a. Disconnect the K1*1 or K4*2 receiver connector.

HINT:

*1: for Built-in Type Amplifier System

*2: for Separate Type Amplifier System

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

Standard voltage:

for Separate Type Amplifier System

TESTER CONNECTION SPECIFIED CONDITION

Tester Connection

Switch Condition

Specified Condition

2009 Toyota Tundra

2009 ACCESSORIES AND EQUIPMENT Audio/Visual - Tundra