Steering Pad Switch Circuit (03/2012 - 07/2012): Procedure

1. Disconnect the G9 radio receiver assembly connector.
2. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   G9-7 (SW1) - G9-6 (SWG)	No switch pushed	95 to 105 kΩ
   	Seek+ switch pushed	Below 2.5 Ω
   	Seek- switch pushed	313 to 345 Ω
   	Volume+ switch pushed	950 to 1050 Ω
   	Volume- switch pushed	2955 to 3265 Ω
   G9-8 (SW2) - G9-6 (SWG)	No switch pushed	95 to 105 kΩ
   	MODE switch pushed	Below 2.5 Ω
   	Voice switch pushed	2955 to 3265 Ω
   	On hook switch pushed	313 to 345 Ω
   	Off hook switch pushed	950 to 1050 Ω

NG → See step   2 

OK → See step   4 

1. Disconnect the z13 steering pad switch assembly connector.
2. Measure the resistance according to the values in the table below.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   z13-11 (AU1) - z13-9 (EAU)	No switch pushed	95 to 105 kΩ
   	Seek+ switch pushed	Below 2.5 Ω
   	Seek- switch pushed	313 to 345 Ω
   	Volume+ switch pushed	950 to 1050 Ω
   	Volume- switch pushed	2955 to 3265 Ω
   z13-10 (AU2) - z13-9 (EAU)	No switch pushed	95 to 105 kΩ
   	MODE switch pushed	Below 2.5 Ω
   	Voice switch pushed	2955 to 3265 Ω
   	On hook switch pushed	313 to 345 Ω
   	Off hook switch pushed	950 to 1050 Ω

   TEXT IN ILLUSTRATION
   
   

   *a	Component without harness connected (Steering Pad Switch Assembly)	*b	Seek+
   *c	Volume+	*d	Volume-
   *e	MODE	*f	Seek-
   *g	Off hook	*h	On hook
   *i	Voice	-	-

NG → See step   6 

OK: Go to next step 

1. Disconnect the z13 steering pad switch assembly connector.
2. Disconnect the F98 spiral cable with sensor sub-assembly connector.
3. Measure the resistance according to the value(s) in the table below.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   z13-9 (EAU) - F98-4 (EAU)	Center	Below 1 Ω
   	2.5 rotations to the left
   	2.5 rotations to the right
   z13-11 (AU1) - F98-6 (AU1)	Center	Below 1 Ω
   	2.5 rotations to the left
   	2.5 rotations to the right
   z13-10 (AU2) - F98-5 (AU2)	Center	Below 1 Ω
   	2.5 rotations to the left
   	2.5 rotations to the right

4. After setting the spiral cable with sensor sub-assembly to the center position, rotate the spiral cable with sensor sub-assembly 2.5 times clockwise. Then while rotating the spiral cable with sensor sub-assembly 5 times counterclockwise, measure the resistance as shown in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   z13-9 (EAU) - F98-4 (EAU)	Always	Below 1 Ω
   z13-11 (AU1) - F98-6 (AU1)	Always	Below 1 Ω
   z13-10 (AU2) - F98-5 (AU2)	Always	Below 1 Ω

   NOTE:

   • The spiral cable with sensor sub-assembly is an important part of the SRS airbag system. Incorrect removal or installation of the spiral cable with sensor sub-assembly may prevent the airbag from deploying. Refer to the procedures shown .
   • As the spiral cable with sensor sub-assembly may break, do not rotate the spiral cable with sensor sub-assembly more than the specified amount.

   HINT: 

   • Removal. Refer to REMOVAL [03/2012 - 07/2012]
   • Installation. Refer to INSTALLATION [03/2012 - 07/2012]
   TEXT IN ILLUSTRATION
   
   

   *a	Component without harness connected (Spiral Cable with Sensor Sub-assembly)
   *b	Steering Pad Switch Assembly Side
   *c	Vehicle Side

NG → See step   5 

OK → REPAIR OR REPLACE HARNESS OR CONNECTOR (SPIRAL CABLE WITH SENSOR SUB ASSEMBLY - RADIO RECEIVER ASSEMBLY)