RM35X0E _59 Vehicle Exterior _079256 LIGHTING (EXT) _0384398 LIGHTING SYSTEM(w/o Headlight ECU) U

LIGHTING (EXT) LIGHTING SYSTEM(w/o Headlight ECU) TERMINALS OF ECU

CHECK MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) AND INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY

3.208,7.729 3.615,8.01 0.406,0.281 5.969,6.26 6.375,6.542 0.406,0.281 2.021,4.49 2.427,4.771 0.406,0.281 5.208,4.469 5.615,4.75 0.406,0.281 1.375,6.073 1.781,6.354 0.406,0.281 3.448,6.083 3.854,6.365 0.406,0.281 5.083,5.969 5.49,6.25 0.406,0.281 5.083,6.302 5.49,6.583 0.406,0.281 3.156,3.052 3.563,3.333 0.406,0.281 5.219,3.042 5.625,3.323 0.406,0.281 1.365,3.063 1.771,3.344 0.406,0.281 0.635,2.167 0.917,2.167 true 1.583,1.438 1.865,1.438 true 1.594,1.698 1.875,1.698 true 1.594,1.146 1.875,1.146 true 1.573,0.51 1.573,0.219 1.573,0.219 1.729,0.219 false 0.854,0.969 1.167,1.167 0.313,0.198 10 false 3D 0.844,1.521 1.156,1.719 0.313,0.198 10 false 3C 0.844,1.854 1.156,2.052 0.313,0.198 10 false 3F 5.833,1.042 6.146,1.24 0.313,0.198 10 false 3B 5.833,1.604 6.146,1.802 0.313,0.198 10 false 3A 0.26,2.083 0.875,2.281 0.615,0.198 10 false 3E*A 0.26,2.281 0.875,2.479 0.615,0.198 10 false 3G*B 3.729,0.833 3.885,1.031 0.156,0.198 10 false A 3.375,7.781 3.531,7.979 0.156,0.198 10 false A 6.094,6.323 6.406,6.521 0.313,0.198 10 false 3F 2.104,4.542 2.417,4.74 0.313,0.198 10 false 3A 5.302,4.531 5.615,4.729 0.313,0.198 10 false 3B 1.5,6.156 1.813,6.354 0.313,0.198 10 false 3C 3.573,6.167 3.885,6.365 0.313,0.198 10 false 3D 5.198,6.021 5.51,6.219 0.313,0.198 10 false 3E 5.188,6.365 5.5,6.563 0.313,0.198 10 false 3G 5.552,6.031 5.865,6.229 0.313,0.198 10 false *A 5.563,6.333 5.875,6.531 0.313,0.198 10 false *B 3.25,3.125 3.708,3.323 0.458,0.198 10 false N19 5.281,3.115 5.74,3.313 0.458,0.198 10 false N18 1.427,3.135 1.885,3.333 0.458,0.198 10 false N20 1.938,1.365 2.396,1.563 0.458,0.198 10 false N19 1.938,1.615 2.396,1.813 0.458,0.198 10 false N20 1.927,1.063 2.385,1.26 0.458,0.198 10 false N18 1.771,0.146 2.083,0.344 0.313,0.198 10 false *1

*A	for LHD	*B	for RHD
*1	Main Body ECU (Multiplex Network Body ECU)	-	-

Remove the main body ECU (multiplex network body ECU) from the instrument panel junction block assembly.

for LHD:

Click herePower Source / Network>POWER DISTRIBUTION>MAIN BODY ECU (for LHD)>REMOVAL201902,201906,_57,_079061,_0383489,RM100000001GBCK,201906,202310,_57,_079061,_0383489,RM100000001IVKI,202310,999999,_57,_079061,_0383489,RM100000002EQ22,

for RHD:

Click herePower Source / Network>POWER DISTRIBUTION>MAIN BODY ECU (for RHD)>REMOVAL201902,201906,_57,_079061,_0383490,RM100000001GBCN,201906,202310,_57,_079061,_0383490,RM100000001IVRX,202310,999999,_57,_079061,_0383490,RM100000002EQ24,

Connect the instrument panel junction block assembly connectors.

Measure the voltage and resistance according to the value(s) in the table below.

Terminal No. (Symbol)	Wiring Color	Terminal Description	Condition	Specified Condition
A-32 (IG) - Body ground	None - Body ground	Ignition power supply	Ignition switch ON	11 to 14 V
A-32 (IG) - Body ground	None - Body ground	Ignition power supply	Ignition switch off	Below 1 V
A-31 (BECU) - Body ground	None - Body ground	Battery power supply	Always	11 to 14 V
A-30 (ACC) - Body ground	None - Body ground	ACC power supply	Ignition switch ACC	11 to 14 V
A-30 (ACC) - Body ground	None - Body ground	ACC power supply	Ignition switch off	Below 1 V
A-11 (GND1) - Body ground	None - Body ground	Ground	Always	Below 1 Ω

Install the main body ECU (multiplex network body ECU).

for LHD:

Click herePower Source / Network>POWER DISTRIBUTION>MAIN BODY ECU (for LHD)>INSTALLATION201902,201906,_57,_079061,_0383489,RM100000001GBCL,201906,202310,_57,_079061,_0383489,RM100000001IVRW,202310,999999,_57,_079061,_0383489,RM100000002EQ23,

for RHD:

Click herePower Source / Network>POWER DISTRIBUTION>MAIN BODY ECU (for RHD)>INSTALLATION201902,201906,_57,_079061,_0383490,RM100000001GBCO,201906,202310,_57,_079061,_0383490,RM100000001IVRY,202310,999999,_57,_079061,_0383490,RM100000002EQ25,

Measure the voltage and resistance, and check for pulses according to the value(s) in the table below.

Terminal No. (Symbol)	Wiring Color	Terminal Description	Condition	Specified Condition
3C-25 (FFGO) - Body ground*1	V - Body ground	Fog light switch input	Taillights on, fog light switch in Fr position	11 to 14 V
3C-25 (FFGO) - Body ground*1	V - Body ground	Fog light switch input	Taillights on, fog light switch OFF	Below 1 V
3C-19 - Body ground*2	L - Body ground	BKUP LP relay drive output	Ignition switch off, shift lever not in R	Below 1 V
3C-19 - Body ground*2	L - Body ground	BKUP LP relay drive output	Ignition switch ON, shift lever in R	11 to 14 V
3C-28 (DRL) - Body ground	W - Body ground	Daytime running light system drive output	Daytime running light system operating	Below 1 V
3C-28 (DRL) - Body ground	W - Body ground	Daytime running light system drive output	Daytime running light system not operating	11 to 14 V
3C-31 (HRLY) - Body ground	L - Body ground	H-LP LH relay drive output	Light control switch in HEAD position	Below 1 V
3C-31 (HRLY) - Body ground	L - Body ground	H-LP LH relay drive output	Light control switch not in HEAD position	11 to 14 V
3C-32 (TRLY) - Body ground	G - Body ground	Front fog lights*1 and clearance lights drive output	Light control switch in TAIL or HEAD position	11 to 14 V
3C-32 (TRLY) - Body ground	G - Body ground	Front fog lights*1 and clearance lights drive output	Light control switch in neither TAIL nor HEAD position	Below 1 V
3B-11 (TRLY) - Body ground	LG - Body ground	Taillights and license plate lights drive output	Light control switch in TAIL or HEAD position	11 to 14 V
3B-11 (TRLY) - Body ground	LG - Body ground	Taillights and license plate lights drive output	Light control switch in neither TAIL nor HEAD position	Below 1 V
N18-19 (GND2) - Body ground	W-B - Body ground	Ground	Always	Below 1 Ω
N20-21 (AHID) - Body ground*4	L - Body ground	Auto high beam switch indicator drive output	Ignition switch ON, auto high beam switch on	Below 1 V
N20-21 (AHID) - Body ground*4	L - Body ground	Auto high beam switch indicator drive output	Ignition switch ON, auto high beam switch off	11 to 14 V
N19-12 (HRY2) - Body ground	BE - Body ground	H-LP RH relay drive output	Light control switch in HEAD position	Below 1 V
N19-12 (HRY2) - Body ground	BE - Body ground	H-LP RH relay drive output	Light control switch not in HEAD position	11 to 14 V
N19-13 (DIM) - Body ground	GR - Body ground	High beam headlight drive output	Light control switch in HEAD position and headlight dimmer switch in High or Flash position	Below 1 V
N19-13 (DIM) - Body ground	GR - Body ground	High beam headlight drive output	Headlight dimmer switch not in High or Flash position	11 to 14 V
N19-16 (HEAD) - Body ground	B - Body ground	Light control switch HEAD position input	Light control switch in HEAD position	Below 1 V
N19-16 (HEAD) - Body ground	B - Body ground	Light control switch HEAD position input	Light control switch not in HEAD position	11 to 14 V
N19-23 (CLTB) - N19-25 (CLTE)*3	L - G	Automatic light control sensor power supply output	Ignition switch ON	11 to 14 V
N19-24 (CLTS) - Body ground*3	R - Body ground	Automatic light control sensor signal input	Ignition switch off	Below 1 V
N19-24 (CLTS) - Body ground*3	R - Body ground	Automatic light control sensor signal input	Ignition switch ON	Pulse generation (See waveform 1)
N19-25 (CLTE) - Body ground*3	G - Body ground	Automatic light control sensor ground	Ignition switch ON	Below 1 Ω
N19-26 (AHBI) - Body ground*4	V - Body ground	Auto high beam switch signal input	Auto high beam switch on	Below 1 V
N19-26 (AHBI) - Body ground*4	V - Body ground	Auto high beam switch signal input	Auto high beam switch off	11 to 14 V
3A-38 (PKB) - Body ground	B - Body ground	Parking brake switch signal input	Parking brake switch on	Below 1 V
3A-38 (PKB) - Body ground	B - Body ground	Parking brake switch signal input	Parking brake switch off	11 to 14 V

*1: w/ Front Fog Light

*2: for Automatic Transmission

*3: w/ Automatic Light Control System

*4: w/ Automatic High Beam System

2.844,1.646 3.219,1.813 0.375,0.167 10 false GND

Waveform 1

Item	Content
Tester Connection	N19-24 (CLTS) - Body ground
Tool setting	2 V/DIV., 10 ms./DIV.
Condition	Ignition switch ON

HINT:: The communication waveform changes according to the surrounding brightness.

CHECK COMBINATION METER ASSEMBLY

Click hereVehicle Interior>METER / GAUGE / DISPLAY>METER / GAUGE SYSTEM>TERMINALS OF ECU201902,201906,_58,_078337,_0379907,RM100000001FQU0,201906,202107,_58,_078337,_0379907,RM100000001ITCK,202107,202310,_58,_078337,_0379907,RM1000000025SVG,202310,999999,_58,_078337,_0379907,RM100000002G4T8,

CHECK FORWARD RECOGNITION CAMERA

Click hereEngine / Hybrid System>CRUISE CONTROL>FRONT CAMERA SYSTEM>TERMINALS OF ECU201902,999999,_51,_078884,_0383149,RM100000001G9I9,