Inspection Procedure

WARNING: This page is about a different car, the 2008 Toyota Tundra. However, it is still accessible from the selected car via links, so may be relevant.

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 ).

INSPECT RADIO RECEIVER

Disconnect the K3 receiver connector.

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

Standard resistance

TESTER CONNECTION SPECIFIED CONDITION

Tester Connection	Switch Condition	Specified Condition
K3-7 (SW1) - K3-6 (SWG)	No switch is pushed	100 kΩ or higher
	Seek+ switch: push	Below 1 Ω
	Seek- switch: push	329 Ω
	Volume+ switch: push	1000 Ω
	Volume- switch: push	3100 Ω
K3-8 (SW2) - K3-6 (SWG)	No switch is pushed	100 kΩ or higher
	MODE switch: push	Below 1 Ω
	On Hook switch: push	329 Ω
	Off Hook switch: push	1000 Ω

NG: Go to step 2

Fig 1: Identifying K3 Connector Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

INSPECT STEERING PAD SWITCH ASSEMBLY

Disconnect the z3 switch connector.

Measure the resistance according to the values in the table below.

Fig 2: Inspecting Steering Pad Switch Assembly

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Standard resistance

TESTER CONNECTION SPECIFIED CONDITION

Tester Connection	Switch Condition	Specified Condition
z3-10 (AU1) - z3-8 (EAU)	No switch is pushed	100 kΩ or higher
	Seek+ switch: push	Below 1 Ω
	Seek- switch: push	329 Ω
	Volume+ switch: push	1000 Ω
	Volume- switch: push	3110 Ω
z3-9 (AU2) - Z3-8 (EAU)	No switch is pushed	100 kΩ or higher
	MODE switch: push	Below 1 Ω
	On Hook switch: push	329 Ω
	Off Hook switch: push	1000 Ω

NG: REPLACE STEERING PAD SWITCH ASSEMBLY (see REMOVAL )

OK: Go to next step.

INSPECT SPIRAL CABLE

Disconnect the z3 switch connector.
Disconnect the J45 cable connector.

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

Standard resistance

TESTER CONNECTION SPECIFIED CONDITION

Tester Connection	Condition	Specified Condition
z3-8 (EAU) - J45-4 (EAU)	Spiral cable is turned 2.5 rotations counterclockwise	Below 1 Ω
	Spiral cable is centered
	Spiral cable is turned 2.5 rotations clockwise
z3-10 (AU1) - J45-6 (AU1)	Spiral cable is turned 2.5 rotations counterclockwise
	Spiral cable is centered
	Spiral cable is turned 2.5 rotations clockwise
Z3-9 (AU2) - J45-5 (AU2)	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 ).

Fig 3: Identifying z3 And J45 Connectors Terminals

NG: REPLACE SPIRAL CABLE (See REMOVAL )

OK: REPAIR OR REPLACE HARNESS OR CONNECTOR (SPIRAL CABLE - RADIO RECEIVER)