NAVIGATION SYSTEM(for HDD) TERMINALS OF ECU
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NAVIGATION ECU SUB-ASSEMBLY
Terminal No. (Symbol) Wiring Color Terminal Description Condition Specification G137-1 (FR+) - G137-7 (GND1) LG - BR Sound signal (Right) Audio system playing A waveform synchronized with sound is output G137-2 (FL+) - G137-7 (GND1) P- BR Sound signal (Left) Audio system playing A waveform synchronized with sound is output G137-3 (ACC1) - G137-7 (GND1) GR - BR Power source (ACC) Ignition switch off Below 1 V Ignition switch ACC 11 to 14 V*1 10.5 to 14 V*2 G137-4 (+B1) - G137-7 (GND1) SB - BR Power source (+B) Always 11 to 14 V*1 10.5 to 14 V*2 G137-5 (FR-) - G137-7 (GND1) L - BR Sound signal (Right) Audio system playing A waveform synchronized with sound is output G137-6 (FL-) - G137-7 (GND1) V - BR Sound signal (Left) Audio system playing A waveform synchronized with sound is output G137-7 (GND1) - Body ground BR - Body ground Ground Always Below 1 V G137-10 (ILL+) - G137-7 (GND1) G - BR Illumination signal Light control switch off Below 1 V Light control switch in tail or head position 11 to 14 V G138-1 (RR+) - G137-7 (GND1) R - BR Sound signal (Rear Right) Audio system playing A waveform synchronized with sound is output G138-2 (RL+) - G137-7 (GND1) B - BR Sound signal (Rear Left) Audio system playing A waveform synchronized with sound is output G138-3 (RR-) - G137-7 (GND1) W - BR Sound signal (Rear Right) Audio system playing A waveform synchronized with sound is output G138-6 (RL-) - G137-7 (GND1) Y - BR Sound signal (Rear Left) Audio system playing A waveform synchronized with sound is output G49-6 (PKB) - G137-7 (GND1) B - BR Parking brake signal See "Vehicle Signal Check Mode" in Operation Check
- G49-7 (CA+) - G137-7 (GND1) B - BR Television camera power supply Ignition switch ON
Shift lever in R
5.5 to 7.05 V G49-8 (V+) - G137-7 (GND1) W - BR Video signal Ignition switch ON
Shift lever in R
Camera lens is not covered, displaying an image
Pulse generation (Refer to waveform 1) Ignition switch ON
Shift lever in R
Camera lens is covered, blacking out screen
Pulse generation (Refer to waveform 2) G49-15 (CGND) - Body ground Shielded - Body ground Shielded ground Always Below 1 V G49-16 (V-) - G137-7 (GND1) R - BR Ground Always Below 1 V G139-1 (IG) - G137-7 (GND1) Y - BR Power source (IG) Ignition switch off Below 1 V Ignition switch ON 11 to 14 V G139-2 (REV) - G137-7 (GND1) BE - BR Reverse signal See "Vehicle Signal Check Mode" in Operation Check
- G139-4 (MACC) - G137-7 (GND1) B - BR Microphone power supply Ignition switch off Below 1 V Ignition switch ACC 4 to 6 V G139-5 (MIN+) - G137-7 (GND1) W - BR Microphone voice signal See "Microphone & Voice Recognition Check" in Operation Check
- G139-6 (SNS2) - G137-7 (GND1) P - BR Microphone connection detection signal Always Below 1 V G139-9 (CANH) Y CAN communication signal - - G139-10 (CANL) W CAN communication signal - - G139-11 (AGND) - Body ground Shielded - Body ground Shielded ground Always Below 1 V G139-17 (SPD) - G137-7 (GND1) BE - BR Vehicle speed signal from combination meter assembly See "Vehicle Signal Check Mode" in Operation Check
- G139-18 (SGND) - G137-7 (GND1) Shielded - BR Shielded ground Always Below 1 V G139-19 (MIN-) - Body ground R - Body ground Microphone voice signal See "Microphone & Voice Recognition Check" in Operation Check
- G139-21 (SW1) - G139-23 (SWG) W - B Steering pad switch signal No switch pushed 2.75 to 3.49 V Up switch pushed 0 to 0.3 V Down switch pushed 0.53 to 0.76 V Volume+ switch pushed 1.19 to 1.6 V Volume- switch pushed 1.95 to 2.54 V G139-22 (SW2) - G139-23 (SWG) R - B Steering pad switch signal No switch pushed 2.75 to 3.49 V MODE/HOLD switch pushed 0 to 0.3 V On hook switch pushed 0.53 to 0.76 V Off hook switch pushed 1.19 to 1.6 V Voice switch pushed 1.95 to 2.54 V G139-23 (SWG) - Body ground B - Body ground Steering pad switch signal Always Below 1 V G139-24 (SW3) - G139-23 (SWG) G - B Steering pad switch signal Steering pad switch not operated 2.75 to 3.49 V Enter switch pushed 0 to 0.3 V Back switch pushed 0.53 to 0.76 V Right switch pushed 1.19 to 1.6 V Left switch pushed 2.75 to 3.49 V G139-25 (ADPG) - G137-7 (GND1) R - BR External device connection detection signal External device connected Below 1 V External device not connected 2.1 to 3 V G139-26 (VAR+) - G139-27 (VA-) W - R Sound signal (Right) External device playing (When stereo jack used) A waveform synchronized with sound is output G139-27 (VA-) - G137-7 (GND1) R - BR Sound signal ground Always Below 1 V G139-28 (VAL+) - G139-27 (VA-) B - R Sound signal (Left) External device playing (When stereo jack used) A waveform synchronized with sound is output G149-1 (UPO) # Power source - - G149-2 (UDO-) # Data signal - - G149-3 (UDO+) # Data signal - - G149-4 (UESJ) # Ground - - RA-5 (ANT+) - G137-7 (GND1) B - BR Power source of antenna Ignition switch ON
Radio switch on and AM or FM selected
11 to 14 V #: There is no wire color information
*1: w/o Stop and Start System
*2: w/ Stop and Start System
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Reference (Oscilloscope waveform):
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*a Waveform 1 (camera lens not covered, displaying an image) *b Synchronization Signal *c Video Waveform Waveform 1 (camera lens is not covered, displaying an image)
Item Content Measurement terminal G49-8 (V+) - G137-7 (GND1) Measurement setting 200 mV/DIV., 50 μsec./DIV. Condition Ignition switch ON, Shift lever in R Tech Tips
The video waveform changes according to the image sent by the television camera assembly.
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*a Waveform 2 (camera lens covered, blacking out the screen) *b Synchronization Signal *c Video Waveform Waveform 2 (camera lens is covered, blacking out the screen)
Item Content Measurement terminal G49-8 (V+) - G137-7 (GND1) Measurement setting 200 mV/DIV., 50 μsec./DIV. Condition Ignition switch ON, Shift lever in R Tech Tips
The video waveform changes according to the image sent by the rear television camera assembly.
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