Inspection Procedure

NOTE: 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 Precautionary Notice for the Supplemental Restraint System (See PRECAUTION ).

INSPECT RADIO RECEIVER

Disconnect the radio receiver connector.

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

Standard Resistance

RESISTANCE SPECIFICATION

Tester Connection	Switch Condition	Specified Condition
J63-7 (SW1) - J63-6 (SWG)	No switch is pushed	95 to 105 kΩ
J63-7 (SW1) - J63-6 (SWG)	Seek+ switch, pushed	Below 2 5 Ω
J63-7 (SW1) - J63-6 (SWG)	Seek- switch: pushed	313.5 to 346.5 Ω
J63-7 (SW1) - J63-6 (SWG)	Volume+ switch pushed	959.5 to 1060.5 Ω
J63-7 (SW1) - J63-6 (SWG)	Volume- switch, pushed	3049.5 to 3370.5 Ω
J63-8 (SW2) - J63-6 (SWG)	No switch is pushed	95 to 105 kΩ
J63-8 (SW2) - J63-6 (SWG)	MODE switch: pushed	Below 2 5 Ω

Fig 1: Identifying Radio Receiver Connectors

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: Go to step 2

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

INSPECT STEERING PAD SWITCH ASSEMBLY

Disconnect the steering pad switch assembly connector.

Fig 2: Identifying Steering Pad Switch Assembly Connectors
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Measure the resistance according to the value(s) in the following table

Standard Resistance

RESISTANCE SPECIFICATION

Tester Connection	Switch Condition	Specified Condition
k1-10 (AU1) - k1-8 (EAU)	No switch is pushed	95 to 105 kΩ
k1-10 (AU1) - k1-8 (EAU)	Seek+ switch: pushed	Below 2.5 Ω
k1-10 (AU1) - k1-8 (EAU)	Seek- switch: pushed	313.5 to 346.5 Ω
k1-10 (AU1) - k1-8 (EAU)	Volume+ switch, pushed	959.5 to 1060 5 Ω
k1-10 (AU1) - k1-8 (EAU)	Volume- switch: pushed	3049.5 to 3370.5 Ω
k1-9 (AU2) - k1-8 (EAU)	No switch is pushed	95 to 105 kΩ
k1-9 (AU2) - k1-8 (EAU)	MODE switch, pushed	Below 2 5 Ω

NG: REPLACE STEERING PAD SWITCH ASSEMBLY (See STEERING PAD SWITCH )

OK: Go to next step

INSPECT SPIRAL CABLE

Disconnect the steering pad switch assembly and spiral cable connectors.

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

Standard Resistance

RESISTANCE SPECIFICATION

Tester Connection	Condition	Specified Condition
k1-8 (EAU) - J24-4 (EAU)	Center	Below 1 Ω
	2.5 rotations to the left
	2 5 rotations to the right
k1-10 (AU1) - J24-6 (AU1)	Center	Below 1 Ω
	2.5 rotations to the left
	2.5 rotations to the right
k1-9 (AU2) - J24-5 (AU2)	Center	Below 1 Ω
	2.5 rotations to the left
	2.5 rotations to the right

NOTE: 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 article shown in the brackets.

Removal (See REMOVAL )
Installation (See INSTALLATION )

Fig 3: Identifying Steering Pad Switch And Spiral Cable Connectors

NG: REPLACE SPIRAL CABLE (See REMOVAL )

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