Inspection
1. INSPECT STEERING PAD SWITCH ASSEMBLY
(a) Inspect the steering pad switch assembly.
(1) Disconnect the switch connector.
Text in Illustration *1 |
Up Switch |
*2 |
Down Switch |
*3 |
Left Switch |
*4 |
Right Switch |
*5 |
Enter Switch |
*6 |
Back Switch |
*7 |
MODE Switch |
*8 |
Volume+ Switch |
*9 |
Volume- Switch |
*10 |
Off Hook (During Dialing or Communication) |
*11 |
On Hook (Hong UP the Phone) |
*12 |
Voice Switch |
*13 |
DISP Switch |
*14 |
Terminal B |
*a |
Component without harness connected (Steering Pad Switch Assembly) |
- |
- |
(2) Measure the resistance according to the value(s) in the table below.
Tester Connection | Switch Condition | Specified Condition |
|---|---|---|
Z11-1 (HO) - Terminal B |
Always |
Below 2.5 Ω |
Z11-10 (AU1) - Z11-7 (EAU) |
No Switch pushed |
95 to 105 kΩ |
Z11-9 (AU2) - Z11-7 (EAU) |
No Switch pushed |
95 to 105 kΩ |
Z11-8 (AU3) - Z11-7 (EAU) |
No Switch pushed |
95 to 105 kΩ |
Z11-10 (AU1) - Z11-7 (EAU) |
Up Switch: pushed |
Below 2.5 Ω |
Z11-9 (AU2) - Z11-7 (EAU) |
Up Switch: pushed |
95 to 105 kΩ |
Z11-8 (AU3) - Z11-7 (EAU) |
Up Switch: pushed |
95 to 105 kΩ |
Z11-10 (AU1) - Z11-7 (EAU) |
Down Switch: pushed |
313 to 345 Ω |
Z11-9 (AU2) - Z11-7 (EAU) |
Down Switch: pushed |
95 to 105 kΩ |
Z11-8 (AU3) - Z11-7 (EAU) |
Down Switch: pushed |
95 to 105 kΩ |
Z11-10 (AU1) - Z11-7 (EAU) |
Right Switch: pushed |
95 to 105 kΩ |
Z11-9 (AU2) - Z11-7 (EAU) |
Right Switch: pushed |
95 to 105 kΩ |
Z11-8 (AU3) - Z11-7 (EAU) |
Right Switch: pushed |
950 to 1050 Ω |
Z11-10 (AU1) - Z11-7 (EAU) |
Left Switch: pushed |
95 to 105 kΩ |
Z11-9 (AU2) - Z11-7 (EAU) |
Left Switch: pushed |
95 to 105 kΩ |
Z11-8 (AU3) - Z11-7 (EAU) |
Left Switch: pushed |
2955 to 3265 Ω |
Z11-10 (AU1) - Z11-7 (EAU) |
Enter Switch: pushed |
95 to 105 kΩ |
Z11-9 (AU2) - Z11-7 (EAU) |
Enter Switch: pushed |
95 to 105 kΩ |
Z11-8 (AU3) - Z11-7 (EAU) |
Enter Switch: pushed |
Below 2.5 Ω |
Z11-10 (AU1) - Z11-7 (EAU) |
Back Switch: pushed |
95 to 105 kΩ |
Z11-9 (AU2) - Z11-7 (EAU) |
Back Switch: pushed |
95 to 105 kΩ |
Z11-8 (AU3) - Z11-7 (EAU) |
Back Switch: pushed |
313 to 345 Ω |
Z11-10 (AU1) - Z11-7 (EAU) |
MODE Switch: pushed |
95 to 105 kΩ |
Z11-9 (AU2) - Z11-7 (EAU) |
MODE Switch: pushed |
Below 2.5 Ω |
Z11-8 (AU3) - Z11-7 (EAU) |
MODE Switch: pushed |
95 to 105 kΩ |
Z11-10 (AU1) - Z11-7 (EAU) |
Volume+ Switch: pushed |
950 to 1050 Ω |
Z11-9 (AU2) - Z11-7 (EAU) |
Volume+ Switch: pushed |
95 to 105 kΩ |
Z11-8 (AU3) - Z11-7 (EAU) |
Volume+ Switch: pushed |
95 to 105 kΩ |
Z11-10 (AU1) - Z11-7 (EAU) |
Volume- Switch: pushed |
2955 to 3265 Ω |
Z11-9 (AU2) - Z11-7 (EAU) |
Volume- Switch: pushed |
95 to 105 kΩ |
Z11-8 (AU3) - Z11-7 (EAU) |
Volume- Switch: pushed |
95 to 105 kΩ |
Z11-10 (AU1) - Z11-7 (EAU) |
Off Hook Switch: pushed |
95 to 105 kΩ |
Z11-9 (AU2) - Z11-7 (EAU) |
Off Hook Switch: pushed |
950 to 1050 Ω |
Z11-8 (AU3) - Z11-7 (EAU) |
Off Hook Switch: pushed |
95 to 105 kΩ |
Z11-10 (AU1) - Z11-7 (EAU) |
On Hook Switch: pushed |
95 to 105 kΩ |
Z11-9 (AU2) - Z11-7 (EAU) |
On Hook Switch: pushed |
313 to 345 Ω |
Z11-8 (AU3) - Z11-7 (EAU) |
On Hook Switch: pushed |
95 to 105 kΩ |
Z11-10 (AU1) - Z11-7 (EAU) |
Voice Switch: pushed |
95 to 105 kΩ |
Z11-9 (AU2) - Z11-7 (EAU) |
Voice Switch: pushed |
2955 to 3265 Ω |
Z11-8 (AU3) - Z11-7 (EAU) |
Voice Switch: pushed |
95 to 105 kΩ |
Z11-10 (AU1) - Z11-7 (EAU) |
DISP Switch: pushed |
95 to 105 kΩ |
Z11-9 (AU2) - Z11-7 (EAU) |
DISP Switch: pushed |
95 to 105 kΩ |
Z11-8 (AU3) - Z11-7 (EAU) |
DISP Switch: pushed |
95 to 105 kΩ |
Z11-2 (+DP) - Z11-3 (-DP) |
DISP Switch: pushed |
Below 2.5 Ω |
If the result is not as specified, replace the steering pad switch assembly.
(b) Check the illumination.
(1) Connect the battery positive (+) lead to terminal IL+2 and the negative (-) lead to terminal -DP of the steering pad switch assembly connector.
(2) Check that the switch illumination comes on.
OK:
Steering pad switch illumination comes on.
If the result is not as specified, replace the steering pad switch assembly.
Test yourself
A quick Toyota 4Runner quiz: every answer comes with an explanation and a link to the manual page.