Terminals Of Ecu
WARNING: This page is about a different car, the 2007 Toyota Prius. However, it is still accessible from the selected car via links, so may be relevant.
- CHECK MULTI-DISPLAY
- Disconnect the M13 display connector.
- Measure the resistance and voltage of the wire harness side connector.STEERING PAD SWITCH FUNCTION CHART
Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition GND1 (M13-1) - Body ground BR - Body ground Ground Always Below 1 Ω ACC (M13-2) - Body ground GR - Body ground ACC power supply Power switch ON (ACC) 10 to 14 V IG (M13-10) - Body ground B - Body ground IG power supply Power switch ON (IG) 10 to 14 V +B1 (M13-3) - Body ground Y - Body ground Battery power supply Always 10 to 14 V If the results are not as specified, there may be a malfunction on the wire harness side.
- Reconnect the M13 display connector.
- Measure the voltage of the connector.VOLTAGE CHART
Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition TSW- (M14-8) - SGND (M14-1) BR Shielded ground Always Below 1 V SGND (M14-21) - Body ground Shielded - Body ground Shielded ground Always Below 1 V MCO+ (M14-22) - Body ground R - Body ground Microphone voice signal See "Microphone & Voice Recognition Check" mode - MCO- (M14-23) - Body ground G - Body ground Microphone voice signal See "Microphone & Voice Recognition Check" mode - TX+ (M14-13) - Body ground W - Body ground AVC-LAN communication signal Power switch ON (ACC) 2 to 3 V TX- (M14-14) - Body ground P - Body ground AVC-LAN communication signal Power switch ON (ACC) 2 to 3 V TX2+ (M13-18) - Body ground P - Body ground AVC-LAN communication signal Power switch ON (ACC) 2 to 3 V TX2- (M13-19) - Body ground W - Body ground AVC-LAN communication signal Power switch ON (ACC) 2 to 3 V TX1+ (M13-4) - Body ground B - Body ground AVC-LAN communication signal Power switch ON (ACC) 2 to 3 V TX1- (M13-5) - Body ground W - Body ground AVC-LAN communication signal Power switch ON (ACC) 2 to 3 V TX4- (M15-6) - Body ground P - Body ground AVC-LAN communication signal Power switch ON (ACC) 2 to 3 V TX4+ (M15-3) - Body ground W - Body ground AVC-LAN communication signal Power switch ON (ACC) 2 to 3 V SLD (M14-24) - Body ground Shielded - Body ground Shielded ground Always Below 1 V IVO- (M14-26) - Body ground R - Body ground Voice guidance signal Voice guidance is provided Waveform synchronized with sound is output IVO+ (M14-25) - Body ground G - Body ground Voice guidance signal Voice guidance is provided Waveform synchronized with sound is output SPD (M13-20) - Body ground V - Body ground Speed signal See "Vehicle Signal Check" mode - TC (M13-7) - Body ground P - Body ground Diagnosis ON signal Power switch ON (IG) 9 to 14 V DR (M13-17) - Body ground B - Body ground Illumination signal Light control switch TAIL or HEAD 2 to 3 V MIN+ (M14-2) - Body ground G - Body ground Microphone voice signal See "Microphone & Voice Recognition Check" mode - MIN- (M14-3) - Body ground R - Body ground Microphone voice signal See "Microphone & Voice Recognition Check" mode - MACC (M14-4) - Body ground BR - Body ground Microphone amplifier power supply Power switch ON (IG) 5 V GVIF (M16-1) - Body ground B - Body ground Digital image signal Multi-display ON Pulse generation IVI- (M14-6) - Body ground W - Body ground Voice guidance signal Voice guidance is provided Waveform synchronized with sound is output IVI+ (M14-5) - Body ground B - Body ground Voice guidance signal Voice guidance is provided Waveform synchronized with sound is output If the result is not as specified, the multi-display may have a malfunction.
- CHECK NAVIGATION ECU
- Disconnect the N3 ECU connector.
- Measure the resistance and voltage of the wire harness side connector.VOLTAGE CHART
Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition +B (N3-1) - Body ground SB - Body ground Battery power supply Always 10 to 14 V ACC (N3-13) - Body ground GR - Body ground ACC power supply Power switch ON (ACC) 10 to 14 V GND1 (N3-15) - Body ground W-B - Body ground Ground Always Below 1 Ω If the results are not as specified, there may be a malfunction on the wire harness side.
- Reconnect the N3 ECU connector.
- Measure the voltage of the connector.VOLTAGE CHART
Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition SPD (N3-4) - Body ground V - Body ground Speed signal See "Vehicle Signal Check" mode - REV (N3-20) - Body ground R - Body ground Reverse signal See "Vehicle Signal Check" mode - MIC+ (N4-3) - Body ground R - Body ground Microphone voice signal See "Microphone & Voice Recognition Check" mode - MIC- (N4-5) - Body ground G - Body ground Microphone voice signal See "Microphone & Voice Recognition Check" mode - TX- (N3-18) - Body ground P - Body ground AVC-LAN communication signal Power switch ON (ACC) 2 to 3 V TX+ (N3-19) - Body ground W - Body ground AVC-LAN communication signal Power switch ON (ACC) 2 to 3 V GVIF (N8-1) - Body ground B - Body ground Digital image signal Multi-display ON Pulse generation SLD1 (N4-7) - Body ground Shielded - Body ground Shielded ground Always Below 1 V VOI- (N3-8) - Body ground W - Body ground Voice guidance signal Voice guidance is provided Waveform synchronized with sound is output VOI+ (N3-9) - Body ground B - Body ground Voice guidance signal Voice guidance is provided Waveform synchronized with sound is output If the result is not as specified, the ECU may have a malfunction.
- CHECK RADIO RECEIVER (See TERMINALS OF ECU )
- CHECK STEREO COMPONENT AMPLIFIER (See TERMINALS OF ECU )
- CHECK TELEVISION CAMERA (See TERMINALS OF ECU ) (w/ Rear View Monitor System)
- CHECK GATEWAY ECU (See TERMINALS OF ECU )