NAVIGATION / MULTI INFO DISPLAY: NAVIGATION SYSTEM: TERMINALS OF ECU; 2023 MY Corolla Corolla Hatchback Corolla HV GR Corolla [09/2022

Last Modified: 05-13-2024	6.11:8.1.0	Doc ID: RM1000000026XHL
Model Year Start: 2023	Model: GR Corolla	Prod Date Range: [09/2022 - 11/2022]
Title: NAVIGATION / MULTI INFO DISPLAY: NAVIGATION SYSTEM: TERMINALS OF ECU; 2023 MY Corolla Corolla Hatchback Corolla HV GR Corolla [09/2022 - 11/2022]

TERMINALS OF ECU

HINT:

Check from the rear of the connector while it is connected to the components.

RADIO AND DISPLAY RECEIVER ASSEMBLY

w/ Manual (SOS) Switch

w/o Manual (SOS) Switch

Terminal No. (Symbol)	Terminal Description	Condition	Specified Condition
I71-1 (FR+) - I55-1 (GND1)	Sound signal (Front right)2 Sound signal (Right)3	Audio system playing	A waveform synchronized with sound signals is output
I71-2 (FL+) - I55-1 (GND1)	Sound signal (Front left)2 Sound signal (Left)3	Audio system playing	A waveform synchronized with sound signals is output
I71-3 (RL+) - I55-1 (GND1)	Sound signal (Rear left)2 Voice signal3	Audio system playing2 Voice guidance sounding3	A waveform synchronized with sound signals is output2 A waveform synchronized with voice signals is output3
I71-4 (RR+) - I55-1 (GND1)*2	Sound signal (Rear right)	Audio system playing	A waveform synchronized with sound signals is output
I71-6 (FR-) - I55-1 (GND1)	Sound signal (Front right)2 Sound signal (Right)3	Audio system playing	A waveform synchronized with sound signals is output
I71-7 (FL-) - I55-1 (GND1)	Sound signal (Front left)2 Sound signal (Left)3	Audio system playing	A waveform synchronized with sound signals is output
I71-8 (RL-) - I55-1 (GND1)	Sound signal (Rear left)2 Voice signal3	Audio system playing2 Voice guidance sounding3	A waveform synchronized with sound signals is output2 A waveform synchronized with voice signals is output3
I71-9 (RR-) - I55-1 (GND1)*2	Sound signal (Rear right)	Audio system playing	A waveform synchronized with sound signals is output
I55-1 (GND1) - Body ground	Ground	Always	Below 1 V
I55-4 (+B1) - I55-1 (GND1)	Power source (+B)	Always	11 to 14 V
I55-5 (TX1+)*3	AVC-LAN communication signal	-	-
I55-6 (TX1-)*3	AVC-LAN communication signal	-	-
I55-15 (ACC1) - I55-1 (GND1)	Power source (ACC)	Ignition switch off	Below 1 V
I55-15 (ACC1) - I55-1 (GND1)	Power source (ACC)	Ignition switch to ACC	11 to 14 V
I55-21 (SW1) - I55-24 (SWG)	Steering pad switch signal	No switch pushed	2.97 to 3.56 V
		Seek+ switch pushed	0.27 to 0.35 V
		Seek- switch pushed	0.86 to 1.03 V
		Volume+ switch pushed	1.51 to 1.79 V
		Volume- switch pushed	2.22 to 2.66 V
I55-22 (SW2) - I55-24 (SWG)	Steering pad switch signal	No switch pushed	2.97 to 3.56 V
		MODE switch pushed	0.27 to 0.35 V
		On/off hook switch pushed	1.51 to 1.79 V
		Voice switch pushed	2.22 to 2.66 V
I55-24 (SWG) - I55-1 (GND1)	Steering pad switch ground	Always	Below 1 V
I55-25 (MUT1) - I55-1 (GND1)*3	Mute signal	Audio system playing	2.0 V or higher
I55-25 (MUT1) - I55-1 (GND1)*3	Mute signal	Audio system changing modes	Below 1 V
I55-27 (SPD) - I55-1 (GND1)	Vehicle speed signal	See "Check Vehicle Signal" in Operation Check	-
I55-28 (REV) - I55-1 (GND1)	Reverse signal	See "Check Vehicle Signal" in Operation Check	-
I56-3 (TMUT) - I55-1 (GND1)25	Mute signal	Audio system playing	Above 2.0 V
I56-3 (TMUT) - I55-1 (GND1)25	Mute signal	Emergency call mode	Below 1 V
I56-5 (CNH1)	Local bus communication signal	-	-
I56-6 (CNL1)	Local bus communication signal	-	-
I56-13 (CANH)	CAN communication signal	-	-
I56-14 (CANL)	CAN communication signal	-	-
I56-15 (ILL+) - I55-1 (GND1)	Illumination signal	Light control switch off	Below 1 V
I56-15 (ILL+) - I55-1 (GND1)	Illumination signal	Light control switch in tail or head position	11 to 14 V
I56-16 (ILL-) - I55-1 (GND1)	Illumination signal	Light control switch off	Below 1 V
I56-16 (ILL-) - I55-1 (GND1)	Illumination signal	Light control switch in tail or head position	Pulse generation
I56-19 (IG) - I55-1 (GND1)	Power source (IG)	Ignition switch off	Below 1 V
I56-19 (IG) - I55-1 (GND1)	Power source (IG)	Ignition switch to ON	11 to 14 V
I56-20 (PKB) - I55-1 (GND1)	Parking brake signal	See "Check Vehicle Signal" in Operation Check	-
I56-21 (MIN+) - I55-1 (GND1)	Microphone voice signal	See "Check Microphone" in Operation Check	-
I56-22 (MIN-) - I55-1 (GND1)	Microphone voice signal	See "Check Microphone" in Operation Check	-
I56-23 (MACC) - I55-1 (GND1)*4	Microphone power supply	Ignition switch off	Below 1 V
I56-23 (MACC) - I55-1 (GND1)*4	Microphone power supply	Ignition switch to ACC	4 to 6 V
I56-24 (SGND) - Body ground	Shield ground	Always	Below 1 V
I56-25 (SNS2) - I55-1 (GND1)	Microphone connection detection signal	Always	Below 1 V
x2-1 (USV1)	Power source	-	-
x2-2 (US1-)	Data signal	-	-
x2-3 (US1+)	Data signal	-	-
x2-4 (UGD1)	Ground	-	-
x2-5 (USG1)	Shield ground	-	-
t5-1 (US4+)5 s3-1 (US4+)4	USB communication line	-	-
t5-2 (US4-)5 s3-2 (US4-)4	USB communication line	-	-
t5-3 (UGD4) - Body ground5 s3-3 (UGD4) - Body ground4	Shield ground	Always	Below 1 Ω
t4-1 (GV2-)5 s2-1 (GV2-)4	Video signal (Digital)	-	-
t4-2 (GV2+)5 s2-2 (GV2+)4	Video signal (Digital)	-	-
t4-3 (GVG2) - Body ground5 s2-3 (GVG2) - Body ground4	Shield ground	Always	Below 1 Ω
I57-7 (SUP) - I55-1 (GND1)	Start up signal	20 seconds elapse after turning the ignition switch to ACC	11 to 14 V
I57-10 (USBV)*5	DCM (telematics transceiver) power supply	Ignition switch off	Below 1 V
I57-10 (USBV)*5	DCM (telematics transceiver) power supply	Ignition switch to ACC	4.75 to 5.25 V
I57-11 (USBG)*5	Ground	-	-
I57-19 (RST)*1	-	-	-
I57-22 (SI+) - I55-1 (GND1)	Voice signal	Voice guidance sounding	A waveform synchronized with sound is output
I57-23 (SI-) - I55-1 (GND1)	Voice signal	Voice guidance sounding	A waveform synchronized with sound is output
I57-24 (SGND) - I55-1 (GND1)	Shield ground	Always	Below 1 Ω
I57-25 (MCO+) - I57-26 (MCO-)	Microphone voice signal	See "Check Microphone (DCU)" in Operation Check	-
I57-26 (MCO-) - I55-1 (GND1)	Microphone voice signal	See "Check Microphone (DCU)" in Operation Check	-
I57-28 (REV2) - I55-1 (GND1)	Reverse signal	Engine running, shift lever not in R → in R	2 V or less → 11 to 14 V
RA-5 (ANT+) - I55-1 (GND1)	Power source of antenna	Ignition switch to ACC Radio switch on and FM or AM selected	11 to 14 V

*1: Terminal exists but is not used
*2: w/o Stereo Component Amplifier
*3: w/ Stereo Component Amplifier
*4: w/o Manual (SOS) Switch
*5: w/ Manual (SOS) Switch

NAVIGATION ECU

w/ Manual (SOS) Switch

w/o Manual (SOS) Switch

Terminal No. (Symbol)	Terminal Description	Condition	Specified Condition
I69-6 (VOI+) - I69-23 (GND)	Voice signal	Voice guidance sounding	A waveform synchronized with sound is output
I69-7 (VOI-) - I69-23 (GND)	Voice signal	Voice guidance sounding	A waveform synchronized with sound is output
I69-8 (SLD1) - Body ground	Shield ground	Always	Below 1 Ω
I69-9 (SPD) - I69-23 (GND)	Vehicle speed signal	See "Check GPS and Vehicle Sensors" in Operation Check	-
I69-10 (+B) - I69-23 (GND)	Power source (+B)	Always	11 to 14 V
I69-13 (MIC+) - I69-23 (GND)	Microphone voice signal	See "Microphone Check (MEU)" in Operation Check	-
I69-14 (MIC-) - Body ground	Microphone voice signal	See "Microphone Check (MEU)" in Operation Check	-
I69-19 (REV2) - I69-23(GND)	Reverse signal	Engine running, shift lever not in R → in R	2 V or less → 11 to 14 V
I69-21 (SUP) - I69-23 (GND)	Power source (ACC)	20 seconds elapse after turning the ignition switch to ACC	11 to 14 V
I69-22 (RST)*1	-	-	-
I69-23 (GND) - Body ground	Ground	Always	Below 1 Ω
t6-1 (USB+)	USB communication line	-	-
t6-2 (USB-)	USB communication line	-	-
t6-3 (USBS) - Body ground	Shield ground	Always	Below 1 Ω
t3-1 (GVO-)2 s1-1 (GVO-)3	Video signal (Digital)	-	-
t3-2 (GVO+)2 s1-2 (GVO+)3	Video signal (Digital)	-	-
t3-3 (GVG1) - Body ground2 s1-3 (GVG1) - Body ground3	Shield ground	Always	Below 1 Ω
t3-4 (US4+)2 s1-4 (US4+)3	USB communication line	-	-
t3-5 (US4-)2 s1-5 (US4-)3	USB communication line	-	-
t3-6 (UGD4) - Body ground2 s1-6 (UGD4) - Body ground3	Shield ground	Always	Below 1 Ω

*1: Terminal exists but is not used
*2: w/ Manual (SOS) Switch
*3: w/o Manual (SOS) Switch

STEREO COMPONENT AMPLIFIER ASSEMBLY (w/ Stereo Component Amplifier Assembly)

Terminal No. (Symbol)	Terminal Description	Condition	Specified Condition
I54-1 (+B) - I54-3 (GND)	Power source (+B)	Always	11 to 14 V
I54-3 (GND) - Body ground	Ground	Always	Below 1 V
I54-8 (WF2+) - I54-3 (GND)	Sound signal (Woofer)	Audio system playing	A waveform synchronized with sound signals is output
I54-9 (RL+) - I54-3 (GND)	Sound signal (Rear Left)	Audio system playing	A waveform synchronized with sound signals is output
I54-10 (WF1+) - I54-3 (GND)	Sound signal (Woofer)	Audio system playing	A waveform synchronized with sound signals is output
I54-11 (RR+) - I54-3 (GND)	Sound signal (Rear Right)	Audio system playing	A waveform synchronized with sound signals is output
I54-12 (TWL+) - I54-3 (GND)	Sound signal (Front Left)	Audio system playing	A waveform synchronized with sound signals is output
I54-13 (FL+) - I54-3 (GND)	Sound signal (Front Left)	Audio system playing	A waveform synchronized with sound signals is output
I54-14 (TWR+) - I54-3 (GND)	Sound signal (Front Right)	Audio system playing	A waveform synchronized with sound signals is output
I54-15 (FR+) - I54-3 (GND)	Sound signal (Front Right)	Audio system playing	A waveform synchronized with sound signals is output
I54-23 (WF2-) - I54-3 (GND)	Sound signal (Woofer)	Audio system playing	A waveform synchronized with sound signals is output
I54-24 (RL-) - I54-3 (GND)	Sound signal (Rear Left)	Audio system playing	A waveform synchronized with sound signals is output
I54-25 (WF1-) - I54-3 (GND)	Sound signal (Woofer)	Audio system playing	A waveform synchronized with sound signals is output
I54-26 (RR-) - I54-3 (GND)	Sound signal (Rear Right)	Audio system playing	A waveform synchronized with sound signals is output
I54-27 (TWL-) - I54-3 (GND)	Sound signal (Front Left)	Audio system playing	A waveform synchronized with sound signals is output
I54-28 (FL-) - I54-3 (GND)	Sound signal (Front Left)	Audio system playing	A waveform synchronized with sound signals is output
I54-29 (TWR-) - I54-3 (GND)	Sound signal (Front Right)	Audio system playing	A waveform synchronized with sound signals is output
I54-30 (FR-) - I54-3 (GND)	Sound signal (Front Right)	Audio system playing	A waveform synchronized with sound signals is output
I68-1 (MUTE) - I54-3 (GND)	Mute signal	Ignition switch to ACC Audio system playing	2.0 V or higher
I68-1 (MUTE) - I54-3 (GND)	Mute signal	Audio system changing modes	Below 1 V
I68-2 (L-) - I54-3 (GND)	Sound signal (Left)	Audio system playing	A waveform synchronized with sound signals is output
I68-3 (L+) - I54-3 (GND)	Sound signal (Left)	Audio system playing	A waveform synchronized with sound signals is output
I68-4 (R-) - I54-3 (GND)	Sound signal (Right)	Audio system playing	A waveform synchronized with sound signals is output
I68-5 (R+) - I54-3 (GND)	Sound signal (Right)	Audio system playing	A waveform synchronized with sound signals is output
I68-6 (SLD) - Body ground	Shield ground	Always	Below 1 V
I68-7 (TX-)	AVC-LAN communication signal	-	-
I68-8 (TX+)	AVC-LAN communication signal	-	-
I68-11 (SPD) - I54-3 (GND)	Vehicle speed signal	Ignition switch to ON Wheel being rotated	Pulse generation
I68-12 (ACC) - I54-3 (GND)	Power source (ACC)	Ignition switch off	Below 1 V
I68-12 (ACC) - I54-3 (GND)	Power source (ACC)	Ignition switch to ACC	11 to 14 V
I68-14 (II1-) - I54-3 (GND)	Voice signal	Voice guidance sounding	A waveform synchronized with voice signals is output
I68-15 (II1+) - I54-3 (GND)	Voice signal	Voice guidance sounding	A waveform synchronized with voice signals is output
I68-18 (SLD1) - Body ground	Shield ground	Always	Below 1 V
I68-24 (TMUT) - Body ground*	Mute signal	Ignition switch to ACC Audio system playing	2.0 V or higher
I68-24 (TMUT) - Body ground*	Mute signal	Emergency call mode	Below 1 V

*: w/ Manual (SOS) Switch

DCM (TELEMATICS TRANSCEIVER) (w/ Manual (SOS) Switch)

Click here

COMBINATION METER ASSEMBLY

Click here

SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY)

Click here