This circuit sends an operation signal from the steering pad switch assembly to the radio receiver assembly.
If there is an open in the circuit, the audio system cannot be operated using the steering pad switch assembly.
If there is a short in the circuit, the same condition as when a switch is continuously depressed occurs.
Therefore, the radio receiver assembly cannot be operated using the steering pad switch assembly, and also the radio receiver assembly itself cannot function.
The vehicle is equipped with a supplemental restraint system (SRS) which includes components such as airbags. Before servicing (including removal or installation of parts), be sure to read the precaution for supplemental restraint system.
for Type A: Click hereVehicle Interior>SUPPLEMENTAL RESTRAINT SYSTEMS>AIRBAG SYSTEM (for Type A)>PRECAUTION201902,201906,_58,_079257,_0387732,RM100000001GZ4C,201906,999999,_58,_079257,_0387732,RM100000001IMN3,
for Type B: Click hereVehicle Interior>SUPPLEMENTAL RESTRAINT SYSTEMS>AIRBAG SYSTEM (for Type B)>PRECAUTION201902,999999,_58,_079257,_0385034,RM100000001GJPR,
Voice switch availability depends on the vehicle. Even if the voice switch is available the function does not operate.
Remove the steering pad switch assembly.
Inspect the steering pad switch assembly.
| Proceed to |
|---|
| OK |
| NG |
OK
NG
Remove the spiral cable sub-assembly.
Inspect the spiral cable sub-assembly.
| Proceed to |
|---|
| OK |
| NG |
OK
NG
Disconnect the O12 radio receiver assembly connector.
Disconnect the N58 spiral cable sub-assembly connector.
Measure the resistance according to the value(s) in the table below.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| O12-21 (SW1) - N58-12 (AU1) | Always | Below 1 Ω |
| O12-22 (SW2) - N58-5 (AU2) | Always | Below 1 Ω |
| O12-23 (SWG) - N58-4 (EAU) | Always | Below 1 Ω |
| O12-21 (SW1) - Body ground | Always | 10 kΩ or higher |
| O12-22 (SW2) - Body ground | Always | 10 kΩ or higher |
| Proceed to |
|---|
| OK |
| NG |
OK
NG