LIGHTING SYSTEM

CHECK AFS ECU (HEADLIGHT SWIVEL ECU)

Disconnect the E91 ECU connector.

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

Terminal No. (Symbol)	Wiring Color	Terminal Description	Condition	Specified Condition
E91-14 (IGS) - E91-22 (E1)	R - W-B	IG power supply	Engine switch on (IG)	11 to 14 V
E91-14 (IGS) - E91-22 (E1)	R - W-B	IG power supply	Engine switch off	Below 1 V
E91-15 (IG) - E91-22 (E1)	L - W-B	IG power supply	Engine switch on (IG)	11 to 14 V
E91-15 (IG) - E91-22 (E1)	L - W-B	IG power supply	Engine switch off	Below 1 V
E91-22 (E1) - Body ground	W-B - Body ground	Ground	Always	Below 1 Ω

If the result is not as specified, there may be a malfunction on the wire harness side.

Reconnect the E91 ECU connector.

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

Terminal No. (Symbol)	Wiring Color	Terminal Description	Condition	Specified Condition
E91-1 (SMBL) - E91-22 (E1)	R - W-B	Headlight swivel motor LH power output	Engine switch on (IG)	11 to 14 V
E91-2 (SMBR) - E91-22 (E1)	R - W-B	Headlight swivel motor RH power output	Engine switch on (IG)	11 to 14 V
E91-10 (SMR) - E91-22 (E1)	L - W-B	Headlight swivel motor RH	Engine switch on (IG)	Pulse generation
E91-11 (RH+) - E91-22 (E1)	P - W-B	Headlight swivel motor RH (leveling portion)	Engine switch on (IG)	Pulse generation
E91-12 (MPX1) - E91-22 (E1)	LG - W-B	CAN communication	Engine switch on (IG)	Pulse generation
E91-13 (MPX2) - E91-22 (E1)	B - W-B	CAN communication	Engine switch on (IG)	Pulse generation
E91-17 (SHFL) - E91-22 (E1)	GR - W-B	Vehicle height signal	Engine switch on (IG) (no passengers, no luggage, vehicle not moving)	2.20 to 2.80 V
E91-18 (SBR) - E91-22 (E1)	L - W-B	Vehicle height signal	Engine switch on (IG)	4.5 to 5.5 V
E91-19 (SHRL) - E91-22 (E1)	SB - W-B	Vehicle height signal	Engine switch on (IG) (no passengers, no luggage, vehicle not moving)	2.21 to 2.80 V
E91-21 (SGR) - E91-22 (E1)	P - W-B	Vehicle height signal	Always	Below 1 Ω
E91-23 (SMGL) - E91-22 (E1)	B - W-B	Headlight swivel motor LH	Always	Below 1 Ω
E91-24 (SMGR) - E91-22 (E1)	B - W-B	Headlight swivel motor RH	Always	Below 1 Ω
E91-29 (SML) - E91-22 (E1)	V - W-B	Headlight swivel motor LH	Engine switch on (IG)	Pulse generation
E91-30 (LH+) - E91-22 (E1)	G - W-B	Headlight swivel motor LH (leveling portion)	Engine switch on (IG)	Pulse generation
E91-32 (MSW) - E91-22 (E1)	W - W-B	AFS OFF switch signal	Engine switch on (IG), headlight AFS OFF switch on	Below 1 V
E91-32 (MSW) - E91-22 (E1)	W - W-B	AFS OFF switch signal	Engine switch on (IG), headlight AFS OFF switch off	11 to 14 V

CHECK MAIN BODY ECU (COWL SIDE JUNCTION BLOCK LH)

Disconnect the 2A, 2B, 2C, 2D, E1, E2, and E3 ECU 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
2A-1 - Body ground	B - Body ground	Battery power supply	Always	11 to 14 V
2A-1 (TRLY) - Body ground	B - Body ground	Taillight power supply	Always	11 to 14 V
2D-62 (GND2) - Body ground	W-B - Body ground	Body ground	Always	Below 1 Ω
E3-1 (GND3) - Body ground	BR - Body ground	Body ground	Always	Below 1 Ω
E1-24 (DCTY) - Body ground*1	L - Body ground	Front door courtesy light switch LH signal	Front door LH open	Below 1 Ω
E1-24 (DCTY) - Body ground*1	L - Body ground	Front door courtesy light switch LH signal	Engine switch off, and front door LH closed	10 kΩ or higher
E1-24 (DCTY) - Body ground*2	P - Body ground	Front door courtesy light switch RH signal	Front door RH open	Below 1 Ω
E1-24 (DCTY) - Body ground*2	P - Body ground	Front door courtesy light switch RH signal	Engine switch off, and front door RH closed	10 kΩ or higher
E2-21 (PCTY) - Body ground*1	P - Body ground	Front door courtesy light switch RH signal	Front door RH open	Below 1 Ω
E2-21 (PCTY) - Body ground*1	P - Body ground	Front door courtesy light switch RH signal	Engine switch off, and front door RH closed	10 kΩ or higher
E2-21 (PCTY) - Body ground*2	L - Body ground	Front door courtesy light switch LH signal	Front door LH open	Below 1 Ω
E2-21 (PCTY) - Body ground*2	L - Body ground	Front door courtesy light switch LH signal	Engine switch off, and front door LH closed	10 kΩ or higher
2C-2 (LCTY) - Body ground	W - Body ground	Rear door courtesy light switch LH signal	Rear door LH open	Below 1 Ω
2C-2 (LCTY) - Body ground	W - Body ground	Rear door courtesy light switch LH signal	Engine switch off, and rear door LH closed	10 kΩ or higher
E2-7 (RCTY) - Body ground	G - Body ground	Rear door courtesy light switch RH signal	Rear door RH open	Below 1 Ω
E2-7 (RCTY) - Body ground	G - Body ground	Rear door courtesy light switch RH signal	Engine switch off, and rear door RH closed	10 kΩ or higher
E2-25 (BCTY) - Body ground	W - Body ground	Back door courtesy light switch signal	Back door open	Below 1 Ω
E2-25 (BCTY) - Body ground	W - Body ground	Back door courtesy light switch signal	Engine switch off, and back door closed	10 kΩ or higher
E1-23 (TAIL) - Body ground	V - Body ground	Light control switch TAIL signal	Light control switch tail	Below 1 Ω
E1-23 (TAIL) - Body ground	V - Body ground	Light control switch TAIL signal	Light control switch except tail	10 kΩ or higher
E2-17 (HEAD) - Body ground	R - Body ground	Light control switch HEAD signal	Light control switch head	Below 1 Ω
E2-17 (HEAD) - Body ground	R - Body ground	Light control switch HEAD signal	Light control switch off	10 kΩ or higher
E1-21 (A) - Body ground	G - Body ground	Light control switch AUTO signal	Light control switch AUTO	Below 1 Ω
E1-21 (A) - Body ground	G - Body ground	Light control switch AUTO signal	Light control switch off	10 kΩ or higher
2D-13 (HU) - Body ground	R - Body ground	Dimmer switch high signal	Dimmer switch high	Below 1 Ω
2D-13 (HU) - Body ground	R - Body ground	Dimmer switch high signal	Dimmer switch high	10 kΩ or higher
E1-13 (HF) - Body ground	GR - Body ground	Dimmer switch flash signal	Dimmer switch flash	Below 1 Ω
E1-13 (HF) - Body ground	GR - Body ground	Dimmer switch flash signal	Dimmer switch flash	10 kΩ or higher
E2-28 (FFOG) - Body ground	R - Body ground	Front fog light switch signal	Front fog light switch on	Below 1 Ω
E2-28 (FFOG) - Body ground	R - Body ground	Front fog light switch signal	Front fog light switch off	10 kΩ or higher
E2-9 (RFOG) - Body ground*3	R - Body ground	Rear fog light switch signal	Rear fog light switch on	Below 1 Ω
E2-9 (RFOG) - Body ground*3	R - Body ground	Rear fog light switch signal	Rear fog light switch off	10 kΩ or higher
2B-22 (STP) - Body ground	R - Body ground	Stop light switch signal	Brake pedal depressed	Below 1 Ω
2B-22 (STP) - Body ground	R - Body ground	Stop light switch signal	Brake pedal released	10 kΩ or higher
E3-11 (FSPT) - Body ground	L - Body ground	Interior foot light signal	Engine switch on (IG), and door open	Below 1 Ω
E3-11 (FSPT) - Body ground	L - Body ground	Interior foot light signal	Engine switch on (IG), and door closed	10 kΩ or higher

*1: for LHD
*2: for RHD
*3: w/ Rear Fog Light

If the result is not as specified, there may be a malfunction on the wire harness side.

Reconnect the 2A, 2B, 2C, 2D, E1, E2, and E3 ECU connectors.

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

Terminal No. (Symbol)	Wiring Color	Terminal Description	Condition	Specified Condition
E2-4 (TRNR) - Body ground	B - Body ground	RH side turn signal	Headlight dimmer switch (TURN R) off	11 to 14 V
E2-4 (TRNR) - Body ground	B - Body ground	RH side turn signal	Headlight dimmer switch (TURN R) on	Below 1 V
E2-8 (DRLE) - Body ground	R - Body ground	Daytime running light circuit	Daytime running light on	Below 1 V
E2-8 (DRLE) - Body ground	R - Body ground	Daytime running light circuit	Daytime running light off	11 to 14 V
E2-15 (DIM) - Body ground	L - Body ground	Hi-beam circuit	Light control switch head, dimmer switch high	Below 1 V
E2-15 (DIM) - Body ground	L - Body ground	Hi-beam circuit	Light control switch head, dimmer switch except high	11 to 14 V
E1-20 (TLI) - Body ground	GR - Body ground	LH side turn signal switch signal	Headlight dimmer switch (TURN L) off	11 to 14 V
E1-20 (TLI) - Body ground	GR - Body ground	LH side turn signal switch signal	Headlight dimmer switch (TURN L) on	Below 1 V
E3-2 (CNRI) - Body ground	LG - Body ground	LH or RH side turn signal switch signal	Headlight dimmer switch (TURN) off	11 to 14 V
E3-2 (CNRI) - Body ground	LG - Body ground	LH or RH side turn signal switch signal	Headlight dimmer switch (TURN L or R) on	Below 1 V
E3-3 (TRI) - Body ground	SB - Body ground	RH side turn signal switch signal	Headlight dimmer switch (TURN R) off	11 to 14 V
E3-3 (TRI) - Body ground	SB - Body ground	RH side turn signal switch signal	Headlight dimmer switch (TURN R) on	Below 1 V
E4-9 (HZCT) - Body ground	W - Body ground	Turn signal light control signal	Turn signal lights blinks	Below 1 V ←→ 11 to 14 V
E2-26 (TRNL) - Body ground	L - Body ground	LH side turn signal	Headlight dimmer switch (TURN L) off	11 to 14 V
E2-26 (TRNL) - Body ground	L - Body ground	LH side turn signal	Headlight dimmer switch (TURN L) on	Below 1 V
2B-18 (HRLY) - Body ground	L - Body ground	Lo-beam circuit	Light control switch head, dimmer switch low	Below 1 V
2B-18 (HRLY) - Body ground	L - Body ground	Lo-beam circuit	Light control switch head, dimmer switch except low	11 to 14 V
2D-39 (DOMR) - Body ground	W - Body ground	Battery save system (interior light auto cut function) signal	Battery save system (interior light auto cut function) operating	11 to 14 V
2D-39 (DOMR) - Body ground	W - Body ground		Battery save system (interior light auto cut function) not operating	Below 1 V
E1-4 (FFGO) - Body ground	R - Body ground	Fog light circuit	Light control switch tail, front fog light switch on	Below 1 V
E1-4 (FFGO) - Body ground	R - Body ground	Fog light circuit	Light control switch tail, front fog light switch off	11 to 14 V
E3-14 (RFGO) - Body ground*	R - Body ground	Rear fog light circuit	Light control switch tail, rear fog light switch on	Below 1 V
E3-14 (RFGO) - Body ground*	R - Body ground	Rear fog light circuit	Light control switch tail, rear fog light switch off	11 to 14 V

*: w/ Rear Fog Light

If the result is not as specified, the ECU may have a malfunction.

CHECK INNER REAR VIEW MIRROR ASSEMBLY

Disconnect the R13 mirror connector.

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

Terminal No. (Symbol)	Wiring Color	Terminal Description	Condition	Specified Condition
R13-1 (IG) - Body ground	G - Body ground	IG power supply	Engine switch on (IG)	11 to 14 V
R13-1 (IG) - Body ground	G - Body ground	IG power supply	Engine switch off	Below 1 V
R13-2 (E) - Body ground	W-B - Body ground	Inner rear view mirror ground	Always	Below 1 Ω

Reconnect the R13 mirror connector.

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

Terminal No. (Symbol)	Wiring Color	Terminal Description	Condition	Specified Condition
R13-10 (LIN) - R13-2 (E)	B - W-B	LIN communication	Automatic high beam system operates	Pulse generation (See waveform 1)

Terminal No. (Symbol)

Wiring Color

Terminal Description

Condition

Specified Condition

R13-10 (LIN) - R13-2 (E)

B - W-B

LIN communication

Automatic high beam system operates

Pulse generation

(See waveform 1)

If the result is not as specified, the inner rear view mirror assembly may have a malfunction.

Waveform 1

Item	Content
Terminal No. (Symbol)	R13-10 (LIN) - R13-2 (E)
Tool setting	2 V/DIV., 20 ms./DIV.
Condition	Automatic high beam system operates

CHECK NO. 2 MAIN BODY ECU

Disconnect the L33 ECU connector.

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

Terminal No. (Symbol)	Wiring Color	Terminal Description	Condition	Specified Condition
L33-14 (BECU) - Body ground	R - Body ground	B power supply	Always	11 to 14 V
L33-13 (SIG) - Body ground	G - Body ground	SIG power supply	Engine switch on (IG)	11 to 14 V
L33-13 (SIG) - Body ground	G - Body ground	SIG power supply	Engine switch off	Below 1 V
L33-6 (LSPT) - Body ground	L - Body ground	Inside handle illumination signal	Engine switch on (IG), and door opened	11 to 14 V
L33-6 (LSPT) - Body ground	L - Body ground	Inside handle illumination signal	Engine switch on (IG), and door closed	Below 1 V
L33-9 (RBD1) - Body ground	L - Body ground	Side step light LH signal	Front door LH open	11 to 14 V
L33-9 (RBD1) - Body ground	L - Body ground	Side step light LH signal	Front door LH closed	Below 1 V
L33-21 (RBD2) - Body ground	L - Body ground	Side step light RH signal	Front door RH open	11 to 14 V
L33-21 (RBD2) - Body ground	L - Body ground	Side step light RH signal	Front door RH closed	Below 1 V

If the result is not as specified, there may be a malfunction on the wire harness side.

CHECK OUTER MIRROR CONTROL ECU

for LHD:

Disconnect the I17 ECU connector.

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

Terminal No. (Symbol)	Wiring Color	Terminal Description	Condition	Specified Condition
I17-9 (GND) - Body ground	W-B - Body ground	Ground	Always	Below 1 Ω
I17-3 (B) - I17-9 (GND)	R - W-B	Battery (ECU power source)	Always	11 to 14 V
I17-4 (ACC) - I17-9 (GND)	GR - W-B	ACC power supply	Engine switch off	Below 2 V
I17-4 (ACC) - I17-9 (GND)	GR - W-B	ACC power supply	Engine switch on (ACC)	6 V or higher

If the result is not as specified, there may be a malfunction on the wire harness side.

Reconnect the I17 ECU connector.

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

Terminal No. (Symbol)	Wiring Color	Terminal Description	Condition	Specified Condition
I18-17 (LP) - I17-9 (GND)	P - W-B	Outer rear view mirror LH signal	Engine switch on (IG) and front door LH open	9 to 14 V
I18-17 (LP) - I17-9 (GND)	P - W-B	Outer rear view mirror LH signal	Engine switch off and front door LH closed	Below 1 V
I18-37 (LP) - I17-9 (GND)	P - W-B	Outer rear view mirror RH signal	Engine switch on (IG) and front door RH open	9 to 14 V
I18-37 (LP) - I17-9 (GND)	P - W-B	Outer rear view mirror RH signal	Engine switch off and front door RH closed	Below 1 V

If the result is not as specified, the ECU may have a malfunction.

for RHD:

Disconnect the I31 ECU connector.

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

Terminal No. (Symbol)	Wiring Color	Terminal Description	Condition	Specified Condition
I31-9 (GND) - Body ground	W-B - Body ground	Ground	Always	Below 1 Ω
I31-3 (B) - I31-9 (GND)	R - W-B	Battery (ECU power source)	Always	11 to 14 V
I31-4 (ACC) - I31-9 (GND)	GR - W-B	ACC power supply	Engine switch off	Below 2 V
I31-4 (ACC) - I31-9 (GND)	GR - W-B	ACC power supply	Engine switch on (ACC)	6 V or higher

If the result is not as specified, there may be a malfunction on the wire harness side.

Reconnect the I31 ECU connector.

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

Terminal No. (Symbol)	Wiring Color	Terminal Description	Condition	Specified Condition
I32-17 (LP) - I31-9 (GND)	P - W-B	Outer rear view mirror LH signal	Engine switch on (IG) and front door LH open	9 to 14 V
I32-17 (LP) - I31-9 (GND)	P - W-B	Outer rear view mirror LH signal	Engine switch off and front door LH closed	Below 1 V
I32-37 (LP) - I31-9 (GND)	P - W-B	Outer rear view mirror RH signal	Engine switch on (IG) and front door RH open	9 to 14 V
I32-37 (LP) - I31-9 (GND)	P - W-B	Outer rear view mirror RH signal	Engine switch off and front door RH closed	Below 1 V

If the result is not as specified, the ECU may have a malfunction.

CHECK MAP LIGHT ASSEMBLY

Disconnect the R7 and R12 light connectors.

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

Terminal No. (Symbol)	Wiring Color	Terminal Description	Condition	Specified Condition
R12-17 (GND7) - Body ground	W-B - Body ground	Ground	Always	Below 1 Ω
R12-20 (GND5) - Body ground	W-B - Body ground	Ground	Always	Below 1 Ω

If the result is not as specified, there may be a malfunction on the wire harness side

Reconnect the R7 and R12 light connectors.

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

Terminal No. (Symbol)	Wiring Color	Terminal Description	Condition	Specified Condition
R7-3 (RLSW) - Body ground	V - Body ground	Rear spot light switch LH signal	Rear spot light switch LH off	Below 1 V
R7-3 (RLSW) - Body ground	V - Body ground	Rear spot light switch LH signal	Rear spot light switch LH on	11 to 14 V
R7-4 (RRSW) - Body ground	Y - Body ground	Rear spot light switch RH signal	Rear spot light switch RH off	Below 1 V
R7-4 (RRSW) - Body ground	Y - Body ground	Rear spot light switch RH signal	Rear spot light switch RH off	11 to 14 V
R7-11 (ILLB) - Body ground	R - Body ground	ACC power supply	Engine switch on (ACC)	11 to 14 V
R7-15 (RGND) - Body ground	W-B - Body ground	Ground	Always	Below 1 Ω
R7-27 (+B3) - Body ground	R - Body ground	Battery power supply	Always	11 to 14 V
R12-2 (LIN) - Body ground	B - Body ground	LIN communication	Engine switch on (IG)	Pulse generation
R12-7 (RLMP) - Body ground	L - Body ground	Rear spot light LH circuit	Always	11 to 14 V
R12-8 (RRMP) - Body ground	G - Body ground	Rear spot light RH circuit	Always	11 to 14 V
R12-11 (GILL) - R12-13 (ILL)	G - W	illumination circuit	Engine switch on (ACC) Headlight dimmer switch off	Below 1 V
R12-11 (GILL) - R12-13 (ILL)	G - W	illumination circuit	Engine switch on (ACC) Headlight dimmer switch TAIL	11 to 14 V
R12-14 (RRVT) - R12-20 (GND5)	G - W-B	Back door light signal	Back door close	Below 1 V
R12-14 (RRVT) - R12-20 (GND5)	G - W-B	Back door light signal	Back door open	11 to 14 V
R12-18 (RILL) - R12-20 (GND5)	G - W-B	Rear dome light circuit	Rear dome light off	11 to 14 V
R12-18 (RILL) - R12-20 (GND5)	G - W-B	Rear dome light circuit	Rear dome light on	Below 1 V

If the result is not as specified, there may be a malfunction on the wire harness side

LIGHTING SYSTEM TERMINALS OF ECU