METER / GAUGE SYSTEM > TERMINALS OF ECU

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Combination Meter Assembly

*1: w/o AFS
*2: w/ Navigation System

Symbols (Terminal No.)	Wiring Color	Terminal Description	Condition	Specified Condition
POWER GND (C8-1) - Body ground	L-B - Body ground	Ground (Power ground)	Always	Below 1 V
ILL- (C8-2) - Body ground	L - Body ground	Illumination signal	Turn the ignition switch to the ON position, combination switch TAIL	Below 1 V → 10 to 16 V
CHECK ENGINE (C8-4) - Body ground	BR - Body ground	Check engine signal	Turn the ignition switch to the ON position, check engine warning light OFF → ON	10 to 16 V → Below 1.5 V
MPX+ (C8-5) - Body ground	Y - Body ground	Communication line	-	-
SPEED SIGNAL (4P) (C8-6) - Body ground	LG - Body ground	Speed signal (Output)	Turn the ignition switch to the ON position, turn the wheel slowly	Pulse generation (See waveform 1)
IG2 (C8-8) - Body ground	GR - Body ground	Battery	Ignition switch OFF → ON	Below 1 V → 10 to 16 V
TURN R (C8-13) - Body ground	P - Body ground	Turn signal flasher	Turn the ignition switch to the ON position, turn signal RH indicator light OFF → ON	Below 1 V → 10 to 16 V
TURN L (C8-14) - Body ground	B - Body ground	Turn signal flasher	Turn the ignition switch to the ON position, turn signal LH indicator light OFF → ON	Below 1 V → 10 to 16 V
ECU +B (C8-15) - Body ground	SB - Body ground	Battery	Always	10 to 16 V
DOME +B (C8-16) - Body ground	O - Body ground	Battery	Always	10 to 16 V
SIGNAL GND (C9-1) - Body ground	W-B - Body ground	Ground (Signal ground)	Always	Below 1 V
FE (C9-2) - Body ground	P - Body ground	Ground (Fuel ground)	Always	Below 1 V
MPX- (C9-4) - Body ground	B - Body ground	Communication line	-	-
POWER METER (C9-8) - Body ground	W - Body ground	Power meter signal	Turn the Ignition switch to the off → ON position	Pulse generation (See waveform 2)
MULTI MODE SW (C9-9) - Body ground	Y - Body ground	Multi mode switch signal	Turn the ignition switch to the ON position, multi mode switch OFF → ON	4 to 6V → Below 1 V
H-LP LEVEL (C9-10) (*1) - Body ground	B - Body ground	Headlight beam level control signal	Turn the ignition switch to the ON position, leveling indicator light OFF → ON	10 to 16 V → Below 1 V
RE (C9-13) - Body ground	W - Body ground	Ground (Rheostat ground)	Always	Below 1 V
RV (C9-14) - Body ground	O - Body ground	Light control rheostat signal	Turn the ignition switch to the ON position, rheostat knob position MIN → MAX	Below 1 V → 4 to 6 V
RL (C9-15) - Body ground	B - Body ground	Light control rheostat signal	Turn the ignition switch to the ON position	4 to 6 V
TCAN SW (C9-16) - Body ground	Y - Body ground	Tail cancel switch signal	Turn the ignition switch to the ON position, tail cancel switch OFF → ON	4 to 6 V → Below 1 V
RSET (C9-17) - Body ground	L - Body ground	ODO/TRIP switch signal	Turn the ignition switch to the ON position, ODO/TRIP switch OFF → ON	4 to 6 V → Below 1 V
SPEED SIGNAL (C9-18) - Body ground	BR - Body ground	Speed signal (Input)	Turn the ignition switch to the ON position, turn the wheel slowly	Pulse generation (See waveform 2)
FUEL SENDER (C9-19) - Body ground	V - Body ground	Fuel level signal	Turn the ignition switch to the ON position, fuel level MIN → MAX	4 to 9 V → Below 2V
P-SEAT (C9-20) - Body ground	GR - Body ground	Passenger seat condition signal	Sits on the passenger seat and turn the ignition switch to the off → ON position	10 to 16 V → Below 1 V
OIL LEVEL (C9-21) - Body ground	BR - Body ground	Engine oil level signal	Turn the ignition switch to the ON position, low engine oil level warning comes on.	Below 1 V → 10 to 16 V
P SEAT BELT (C9-22) (*2) - Body ground	P - Body ground	Passenger side seat belt signal	Turn the ignition switch to the ON position, passenger seat belt warning light OFF → blinks	10 to 16 V → Below 1 V
WASHER LEVEL (C9-24) - Body ground	LG - Body ground	Washer level indicator light signal	Turn the ignition switch to the ON position, washer level indicator light OFF → ON	10 to 16 V → Below 1 V

Waveform 1 (Reference): Using an oscilloscope:
OK
Item
Condition
Tool setting
5 V/DIV., 20 ms/DIV.
Vehicle condition
Driving at approx. 20 km/h (12 mph)
HINT:
As vehicle speed increases, the cycle of the signal waveform narrows.

OK
Item	Condition
Tool setting	5 V/DIV., 20 ms/DIV.
Vehicle condition	Driving at approx. 20 km/h (12 mph)

Waveform 2 (Reference): Using an oscilloscope:
OK
Item
Condition
Tool setting
1 V/DIV., 2 μsec/DIV.
Vehicle condition
Turn the ignition switch to the ON position.

OK
Item	Condition
Tool setting	1 V/DIV., 2 μsec/DIV.
Vehicle condition	Turn the ignition switch to the ON position.

Integration Control & Panel Assembly (w/o Navigation System)

Symbols (Terminal No.)	Wiring Color	Terminal Description	Condition	Specified Condition
+B (C4-1) - Body ground	O - Body ground	Battery	Always	10 to 14 V
ACC (C4-2) - Body ground	GR - Body ground	Ignition Switch Signal	Turn the ignition switch to the off → ON position	Below 1 V → 10 to 14 V
LP (C4-4) - Body ground	P - Body ground	Security Indicator Signal	Turn the ignition switch to the ON position, security indicator light ON → OFF	Below 1 V → 10 to 14 V
MPX- (C4-5)	L - Body ground	Multiplex Communication Signal	-	-
P-AB (C4-6) - Body ground	BR - Body ground	Passenger Airbag Off Indicator Light Signal	Turn the ignition switch to the ON position, passenger airbag off indicator light OFF → ON	Below 1 V → 10 to 14 V
GND (C4-7) - Body ground	W-B - Body ground	Ground	Always	Below 1 V
ILL+ (C4-8) - Body ground	G - Body ground	Illumination Signal	Combination switch OFF → Head	Below 1 V → 10 to 14 V
IG+ (C4-9) - Body ground	LG - Body ground	Ignition Switch Signal	Ignition switch signal	Below 1 V → 10 to 14 V
F (C4-11) - Body ground	V - Body ground	Turn Light Signal	Turn indicator light OFF → ON	Below 1 V → 10 to 14 V
MPX - (C4-12)	R - Body ground	Multiplex Communication Signal	-	-
PAON (C4-13) - Body ground	Y - Body ground	Passenger Airbag On Indicator Light Signal	Turn the ignition switch to the ON position, passenger airbag on indicator light OFF → ON	Below 1 V → 10 to 14 V
ILL- (C4-14) - Body ground	W - Body ground	Illumination Signal	Turn the ignition switch to the ON position, combination switch Head, and light control rheostat position MIN. → MAX.	Pulse generation (See waveform)

Waveform (Reference): Using an oscilloscope:
OK:
Item
Condition
Tool setting
5 V/DIV., 2 ms/DIV.
Vehicle condition
Turn the ignition switch to the ON position, light control rheostat is in the MID position.

OK:
Item	Condition
Tool setting	5 V/DIV., 2 ms/DIV.
Vehicle condition	Turn the ignition switch to the ON position, light control rheostat is in the MID position.

Multi-Display Assembly (w/ Navigation System)

Symbols (Terminal No.)	Wiring Color	Terminal Description	Condition	Specified Condition
GND (M5-3) - Body ground	W-B - Body ground	Ground	Always	Below 1 V
IG (M5-10) - Body ground	LG - Body ground	Ignition Switch Signal	Turn the ignition switch to the off → ON position	Below 1 V → 10 to 16 V
ACC (M5-11) - Body ground	GR - Body ground	Ignition Switch Signal	Turn the ignition switch to the off → ON position	Below 1 V → 10 to 16 V
+B (M5-12) - Body ground	G - Body ground	Battery	Always	10 to 16 V
PBEW (M5-21) - Body ground	O - Body ground	Passenger Seat Belt Indicator Light Signal	Turn the ignition switch to the ON position, passenger seat belt indicator light OFF → ON	Pulse generation (See waveform)

Waveform (Reference): Using an oscilloscope:
OK:
Item
Condition
Tool setting
5 V/DIV., 200 ms/DIV.
Vehicle condition
Turn the ignition switch to the ON position, p-belt indicator light blinks.

OK:
Item	Condition
Tool setting	5 V/DIV., 200 ms/DIV.
Vehicle condition	Turn the ignition switch to the ON position, p-belt indicator light blinks.

COMBINATION METER INNER CIRCUIT

*1: w/o Navigation System
*2: w/o AFS
*3: w/ Navigation System

Terminal No.		Wire harness side
C8	1	Ground (Power Ground)
	2	Each part that uses illumination signal (Audio Controller, Integration Control & Panel Assembly, Console Box, Multi-display)
	3	-
	4	Hybrid Vehicle Control ECU (Check Engine)
	5	Multiplex Communication Line, Integration Control & Panel Assembly (*1)
	6	Each part that uses speed signal
	7	-
	8	Gauge Fuse
	9	-
	10	-
	11	-
	12	-
	13	Turn Signal Flasher R
	14	Turn Signal Flasher L
	15	ECU-B Fuse
	16	DOME Fuse
C9	1	Ground (Signal Ground)
	2	Ground (Fuel Ground)
	3	-
	4	Multiplex Communication Line
	5	-
	6	-
	7	-
	8	Hybrid Vehicle Control ECU (Power Meter)
	9	Steering Pad Switch (DISP)
	10	Headlight Beam Level Control ECU (*2)
	11	-
	12	-
	13	Light Control Rheostat
	14	Light Control Rheostat
	15	Light Control Rheostat
	16	Light Control Rheostat (Tail Cancel Switch)
	17	Light Control Rheostat (ODO/TRIP Switch)
	18	ABS & Traction Actuator Assembly
	19	Fuel Sender Gauge Assembly
	20	Occupant Classification Sensor
	21	Engine Oil Level Sensor
	22	Multi-display (*3)
	23	-
	24	Washer Level Warning Switch