Audio And Visual System -- Terminals Of Ecu |
| CHECK RADIO RECEIVER ASSEMBLY (w/o Steering Pad Switch) |
Disconnect the R2 receiver connector.
Measure the resistance and voltage of the wire harness side connector.
If the results are not as specified, there may be a malfunction on the wire harness side.Terminal No. (Symbols) Wiring Color Terminal Description Condition Specified Condition R2-7 (GND) - Body ground BR - Body ground Ground Always Below 1 Ω R2-3 (ACC) - Body ground GR - Body ground ACC power supply Ignition switch ACC 11 to 14 V R2-4 (B) - Body ground L-Y - Body ground Battery power supply Always 11 to 14 V R2-10 (ILL+) - Body ground G - Body ground Illumination signal Light control switch TAIL 11 to 14 V Reconnect the R2 receiver connector.
Measure the voltage of the connector.
If the result is not as specified, the receiver may have a malfunction.Terminal No. (Symbols) Wiring Color Terminal Description Condition Specified Condition R3-1 (RR+) - R2-7 (GND) R - BR Sound signal (rear right) Audio system is operating Waveform synchronized with sound is output R3-2 (RL+) - R2-7 (GND) B - BR Sound signal (rear left) Audio system is operating Waveform synchronized with sound is output R3-3 (RR-) - R2-7 (GND) W - BR Sound signal (rear right) Audio system is operating Waveform synchronized with sound is output R3-6 (RL-) - R2-7 (GND) Y - BR Sound signal (rear left) Audio system is operating Waveform synchronized with sound is output R2-1 (FR+) - R2-7 (GND) LG - BR Sound signal (front right) Audio system is operating Waveform synchronized with sound is output R2-2 (FL+) - R2-7 (GND) P - BR Sound signal (front left) Audio system is operating Waveform synchronized with sound is output R2-5 (FR-) - R2-7 (GND) L - BR Sound signal (front right) Audio system is operating Waveform synchronized with sound is output R2-6 (FL-) - R2-7 (GND) V - BR Sound signal (front left) Audio system is operating Waveform synchronized with sound is output R2-8 (ANT) - R2-7 (GND) B-W - BR Power source of antenna amplifier Ignition switch ON, radio switch ON and AM or FM radio on 11 to 14 V
| CHECK RADIO RECEIVER ASSEMBLY (w/ Steering Pad Switch) |
Disconnect the R2 receiver connector.
Measure the resistance and voltage according to the value(s) in the table below.
If the results are not as specified, there may be a malfunction on the wire harness side.Terminal No. (Symbols) Wiring Color Terminal Description Condition Specified Condition R2-7 (GND) - Body ground BR - Body ground Ground Always Below 1 Ω R2-3 (ACC) - Body ground GR - Body ground ACC power supply Ignition switch ACC 11 to 14 V R2-4 (B) - Body ground L-Y - Body ground Battery power supply Always 11 to 14 V R2-10 (ILL+) - Body ground G - Body ground Illumination signal Light control switch TAIL 11 to 14 V Reconnect the R2 receiver connector.
Measure the voltage according to the value(s) in the table below.
If the result is not as specified, the receiver may have a malfunction.Terminal No. (Symbols) Wiring Color Terminal Description Condition Specified Condition R3-1 (RR+) - R2-7 (GND) R - BR Sound signal (rear right) Audio system is operating Waveform synchronized with sound is output R3-2 (RL+) - R2-7 (GND) B - BR Sound signal (rear left) Audio system is operating Waveform synchronized with sound is output R3-3 (RR-) - R2-7 (GND) W - BR Sound signal (rear right) Audio system is operating Waveform synchronized with sound is output R3-6 (RL-) - R2-7 (GND) Y - BR Sound signal (rear left) Audio system is operating Waveform synchronized with sound is output R2-1 (FR+) - R2-7 (GND) LG - BR Sound signal (front right) Audio system is operating Waveform synchronized with sound is output R2-2 (FL+) - R2-7 (GND) P - BR Sound signal (front left) Audio system is operating Waveform synchronized with sound is output R2-5 (FR-) - R2-7 (GND) L - BR Sound signal (front right) Audio system is operating Waveform synchronized with sound is output R2-6 (FL-) - R2-7 (GND) V - BR Sound signal (front left) Audio system is operating Waveform synchronized with sound is output R4-7 (SW1) - R4-6 (SWG) R - L Steering pad switch signal Steering pad switch not pushed 4 V or higher R4-7 (SW1) - R4-6 (SWG) R - L Steering pad switch signal Steering pad switch Seek+ switch pushed 0.1 V R4-7 (SW1) - R4-6 (SWG) R - L Steering pad switch signal Steering pad switch Seek- switch pushed 0.9 V R4-7 (SW1) - R4-6 (SWG) R - L Steering pad switch signal Steering pad switch Volume+ switch pushed 1.5 V R4-7 (SW1) - R4-6 (SWG) R - L Steering pad switch signal Steering pad switch Volume- switch pushed 3 V R4-8 (SW2) - R4-6 (SWG) W - L Steering pad switch signal Steering pad switch not pushed 4 V or higher R4-8 (SW2) - R4-6 (SWG) W - L Steering pad switch signal Steering pad switch MODE switch pushed Below 0.1 V R2-8 (ANT) - R2-7 (GND) B-W - BR Power source of antenna amplifier Ignition switch ACC, radio switch ON and AM or FM radio on 11 to 14 V R4-3 (SPD) - R2-7 (GND) V-R - BR Speed signal Ignition switch ON, drive wheels turned slowly Pulse generation