DESCRIPTION
WIRING DIAGRAM
INSPECTION PROCEDURE
CHECK HARNESS AND CONNECTOR (RADIO RECEIVER - SPIRAL CABLE)
INSPECT SPIRAL CABLE SUB-ASSEMBLY
INSPECT STEERING PAD SWITCH ASSEMBLY
AUDIO AND VISUAL SYSTEM (w/o Navigation System) - Steering Pad Switch Circuit
DESCRIPTION
This circuit sends an operation signal from the steering pad switch to the radio receiver.
If there is an open in the circuit, the audio system cannot be operated using the steering pad switch.
If there is a short in the circuit, the resulting condition is the same as if the switch were continuously depressed. Therefore, the audio system cannot be operated using the steering pad switch, and the audio system itself cannot function.
WIRING DIAGRAM
INSPECTION PROCEDURE
- 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 for the SRS ().
| 1.CHECK HARNESS AND CONNECTOR (RADIO RECEIVER - SPIRAL CABLE) |
Disconnect the F19 receiver connector.
Disconnect the E12 cable connector.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
| Tester Connection | Condition | Specified Condition |
| F19-8 (SW2) - E12-5 (AU2) | Always | Below 1 Ω |
| F19-6 (SWG) - E12-4 (EAU) |
| F19-7 (SW1) - E12-6 (AU1) |
| F19-8 (SW2) - Body ground | Always | 10 kΩ or higher |
| F19-6 (SWG) - Body ground |
| F19-7 (SW1) - Body ground |
| | REPAIR OR REPLACE HARNESS OR CONNECTOR |
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| 2.INSPECT SPIRAL CABLE SUB-ASSEMBLY |
Text in Illustration| *1 | Vehicle Side | *2 | Steering Pad Switch Side |
Disconnect the z36 cable connectors.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
| Tester Connection | Condition | Specified Condition |
| E12-4 (EAU) - z36-8 (EAU) | Spiral cable is turned 2.5 rotations counterclockwise | Below 1 Ω |
| Spiral cable is centered |
| Spiral cable is turned 2.5 rotations clockwise |
| E12-5 (AU2) - z36-9 (AU2) | Spiral cable is turned 2.5 rotations counterclockwise | Below 1 Ω |
| Spiral cable is centered |
| Spiral cable is turned 2.5 rotations clockwise |
| E12-6 (AU1) - z36-10 (AU1) | Spiral cable is turned 2.5 rotations counterclockwise | Below 1 Ω |
| Spiral cable is centered |
| Spiral cable is turned 2.5 rotations clockwise |
- 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 ().
| | REPLACE SPIRAL CABLE SUB-ASSEMBLY ()
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| 3.INSPECT STEERING PAD SWITCH ASSEMBLY |
Disconnect the z36 switch connector.
Text in Illustration| *1 | Volume+ | *2 | Volume- |
| *3 | Seek- | *4 | MODE |
| *5 | Seek+ | *6 | Off Hook |
| *7 | On Hook | - | - |
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
| Tester Connection | Switch Condition | Specified Condition |
| 10 (AU1) - 8 (EAU) | No switch is pushed | 95 to 105 kΩ |
| Seek+ switch pushed | Below 2.5 Ω |
| Seek- switch pushed | 312 to 345 Ω |
| Volume+ switch pushed | 950 to 1050 Ω |
| Volume- switch pushed | 2954 to 3265 Ω |
| 9 (AU2) - 8 (EAU) | No switch is pushed | 95 to 105 kΩ |
| MODE switch pushed | Below 2.5 Ω |
| On hook switch pushed | 312 to 345 Ω |
| Off hook switch pushed | 950 to 1050 Ω |
| Voice switch pushed | 2954 to 3265 Ω |
| | REPLACE STEERING PAD SWITCH ASSEMBLY ()
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| OK | |
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| PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE ()
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