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 PRECAUTION in the Supplemental Restraint System (see PRECAUTION ).

CHECK HARNESS AND CONNECTOR (NAVIGATION RECEIVER - SPIRAL CABLE)

Disconnect the K21 receiver connector.
Disconnect the J45 cable connector.

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

Standard resistance

HARNESS AND CONNECTOR (NAVIGATION RECEIVER - SPIRAL CABLE) TESTER CONNECTION SPECIFIED CONDITION

Tester Connection	Condition	Specified Condition
K21-8 (SW2) - J45-5 (AU2)	Always	Below 1 Ω
K21-6 (SWG) - J45-4 (EAU)
K21-7 (SW1) - J45-6 (AU1)
K21-8 (SW2) - Body ground	Always	10 kΩ or higher
K21-6 (SWG) - Body ground
K21-7 (SW1) - Body ground

Fig 1: Identifying K21 Receiver Connector And J45 Cable Connector

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

OK: Go to Next Step

INSPECT SPIRAL CABLE

Disconnect the z3 and J45 cable connectors.

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

Standard resistance

SPIRAL CABLE TESTER CONNECTION SPECIFIED CONDITION

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

Fig 2: Identifying z3 And J45 Cable Connectors

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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 supplemental restraint system (see PRECAUTION ).

NG: REPLACE SPIRAL CABLE SUB-ASSEMBLY (See REMOVAL )

OK: Go to Next Step

INSPECT STEERING PAD SWITCH ASSEMBLY

Fig 3: Identifying Steering Pad Switch Assembly

Disconnect the z3 switch connector.

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

Standard resistance

STEERING PAD SWITCH ASSEMBLY TESTER CONNECTION SPECIFIED CONDITION

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

NG: REPLACE STEERING PAD SWITCH ASSEMBLY (See REMOVAL )

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