METER / GAUGE SYSTEM > TERMINALS OF ECU

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1. Disconnect the C8 and C19 meter connectors.
   

2. Measure the resistance of the wire harness side connectors.
   
   

   Terminal No.	Wiring Color	Terminal Description	Condition	Specified Condition
   C8-1 - Body ground	R - Body ground	Battery	Always	10 to 14 V
   C8-21 - C8-22	B-O - Y	IG2 signal	Ignition switch ON	10 to 14 V
   C8-21 - C8-22	B-O - Y	IG2 signal	Ignition switch OFF	Below 1 V
   C19-11 - Body ground*1	B-R - Body ground	Power supply for fuel consumption calculation	Ignition switch ON	10 to 14 V
   C19-11 - Body ground*1	B-R - Body ground	Power supply for fuel consumption calculation	Ignition switch OFF	Below 1 V
   C8-22 - Body ground	Y - Body ground	Ground	Always	Below 1 Ω
   C8-19 - Body ground*2	W-B - Body ground	Ground	Always	Below 1 Ω
   C8-38 - Body ground*3	R-G - Body ground	Ground	Always	Below 1 Ω
   C8-9 - Body ground*4	W-G - Body ground	Ground	Always	Below 1 Ω
   C8-9 - Body ground*5	W-G - Body ground	Rheostat signal	Rheostat knob fully turned to left position	702 Ω
   C8-9 - Body ground*5	W-G - Body ground	Rheostat signal	Rheostat knob fully turned to right position	Below 1 Ω

   HINT:

   *1: 1TR-FE, 2TR-FE

   *2: w/o Airbag

   *3: w/o ABS

   *4: w/o Rheostat

   *5: w/ Rheostat

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

3. Reconnect the C8 and C19 meter connectors.
   

4. Measure the voltage of the connectors.
   
   

   Terminal No.	Wiring Color	Terminal Description	Condition	Specified Condition
   C8-2 - C8-3	BR - BR-Y	Fuel level signal	Ignition switch ON, fuel level F	Below 1 V
   C8-2 - C8-3	BR - BR-Y	Fuel level signal	Ignition switch ON, fuel level F	4 to 7 V
   C8-5 - Body ground	P-L - Body ground	Vehicle speed signal (input)	Ignition switch ON, slowly turn wheel	Pulse generation (see waveform 1)
   C8-6 - Body ground	V-R - Body ground	Vehicle speed signal (output)	Vehicle is driven	Pulse generation (see waveform 1)
   C8-7 - Body ground	B-W - Body ground	Tachometer signal	Engine running	Pulse generation (see waveform 2)
   C8-8 - C8-22	G - Y	Light control switch signal	Light control switch is OFF	Below 1 V
   C8-8 - C8-22	G - Y	Light control switch signal	Light control switch is ON	10 to 14 V
   C8-10 - Body ground	G-Y - Body ground	Unlock warning switch signal	No key in ignition key cylinder	Below 1 V
   C8-10 - Body ground	G-Y - Body ground	Unlock warning switch signal	Ignition switch OFF, key is in ignition key cylinder	10 to 14 V
   C8-11 - Body ground	R-Y - Body ground	Driver side seat belt warning signal	Ignition switch ON, driver side seat belt unfastened	Below 1 V
   C8-11 - Body ground	R-Y - Body ground	Driver side seat belt warning signal	Ignition switch ON, driver side seat belt fastened	10 to 14 V
   C8-12 - C8-13*1	G-B - W-G	Unengaged park warning signal	Ignition switch ON, A/T shift lever on P, transfer shift lever not on P	10 to 14 V
   C8-12 - C8-13*1	G-B - W-G	Unengaged park warning signal	Ignition switch ON, A/T shift lever on P, transfer shift lever on P	Below 1 V
   C8-14 - Body ground*3	W-G - Body ground	Fuel filter warning signal	Ignition switch ON, fuel system warning light OFF	Below 1 V
   C8-14 - Body ground*3	W-G - Body ground	Fuel filter warning signal	Ignition switch ON, fuel system warning light ON	10 to 14 V
   C8-15 - Body ground	R-B - Body ground	Driver side door signal (output)	Driver side door is closed	Below 1 V
   C8-15 - Body ground	R-B - Body ground	Driver side door signal (output)	Driver side door is open	10 to 14 V
   C8-16 - Body ground	R-B - Body ground	Driver side door signal (input)	Driver side door is closed	Below 1 V
   C8-16 - Body ground	R-B - Body ground	Driver side door signal (input)	Driver side door is open	Below 1 V
   C8-17 - Body ground	R-L - Body ground	Door signal	All doors are closed	10 to 14 V
   C8-17 - Body ground	R-L - Body ground	Door signal	All doors are open	Below 1 V
   C8-18 - Body ground*1	P - Body ground	ATF temperature warning signal	Ignition switch ON, ATF temperature warning light OFF	10 to 14 V
   C8-18 - Body ground*1	P - Body ground	ATF temperature warning signal	Ignition switch ON, ATF temperature warning light ON	Below 1 V
   C8-23 - Body ground*3	L-R - Body ground	Sedimenter warning signal	Ignition switch ON, fuel system warning light OFF	10 to 14 V
   C8-23 - Body ground*3	L-R - Body ground	Sedimenter warning signal	Ignition switch ON, fuel system warning light ON	Below 1 V
   C8-24 - C8-22	G-B - Y	Turn signal indicator LH signal	Ignition switch ON, turn signal indicator LH light OFF	Below 1 V
   C8-24 - C8-22	G-B - Y	Turn signal indicator LH signal	Ignition switch ON, turn signal indicator LH light ON	10 to 14 V
   C8-25 - C8-22	G-Y - Y	Turn signal indicator RH signal	Ignition switch ON, turn signal indicator RH light OFF	Below 1 V
   C8-25 - C8-22	G-Y - Y	Turn signal indicator RH signal	Ignition switch ON, turn signal indicator RH light ON	10 to 14 V
   C8-27 - Body ground	R-Y - Body ground	HI BEAM indicator signal	HI BEAM indicator light OFF	10 to 14 V
   C8-27 - Body ground	R-Y - Body ground	HI BEAM indicator signal	HI BEAM indicator light ON	Below 1 V
   C8-28 - Body ground*4	L-B - Body ground	Cruise indicator signal	Ignition switch ON, cruise control main switch OFF	10 to 14 V
   C8-28 - Body ground*4	L-B - Body ground	Cruise indicator signal	Ignition switch ON, cruise control main switch ON	Below 1 V
   C8-31 - Body ground*4	R-B - Body ground	4WD indicator signal	Ignition switch ON, transfer shift lever in position other than H4 or L4	10 to 14 V
   C8-31 - Body ground*4	R-B - Body ground	4WD indicator signal	Ignition switch ON, transfer shift lever on H4 or L4	Below 1 V
   C8-35 - Body ground	LG-B - Body ground	Oil pressure warning signal	Ignition switch ON, oil pressure warning light OFF	10 to 14 V
   C8-35 - Body ground	LG-B - Body ground	Oil pressure warning signal	Ignition switch ON, oil pressure warning light ON	Below 1 V
   C8-36 - Body ground	LG - Body ground	Brake warning signal	Ignition switch ON, brake warning light OFF	10 to 14 V
   C8-36 - Body ground	LG - Body ground	Brake warning signal	Ignition switch ON, brake warning light ON	Below 1 V
   C8-37 - Body ground	GR - Body ground	Charge warning signal	Ignition switch ON, charge warning light OFF	10 to 14 V
   C8-37 - Body ground	GR - Body ground	Charge warning indicator	Ignition switch ON, charge warning light ON	Below 1 V
   C8-38 - Body ground*2	R-G - Body ground	ABS warning indicator	Ignition switch ON, ABS warning light OFF	10 to 14 V
   C8-38 - Body ground*2	R-G - Body ground	ABS warning signal	Ignition switch ON, ABS warning light ON	Below 1 V
   C8-39 - Body ground	R-B - Body ground	MIL signal	Ignition switch ON, MIL warning light OFF	10 to 14 V
   C8-39 - Body ground	R-B - Body ground	MIL signal	Ignition switch ON, MIL warning light ON	Below 1 V
   C8-40 - Body ground*3	Y-R - Body ground	Glow indicator signal	Ignition switch ON, Glow indicator light OFF	10 to 14 V
   C8-40 - Body ground*3	Y-R - Body ground	Glow indicator signal	Ignition switch ON, Glow indicator light ON	Below 1 V
   C19-1 - Body ground*5	GR-L - Body ground	A/T shift position signal (L)	Ignition switch ON, A/T L indicator light OFF	Below 1 V
   C19-1 - Body ground*5	GR-L - Body ground	A/T shift position signal (L)	Ignition switch ON, A/T L indicator light ON	10 to 14 V
   C19-2 - Body ground*5	G-R - Body ground	A/T shift position signal (L)	Ignition switch ON, A/T L indicator light OFF	Below 1 V
   C19-2 - Body ground*5	G-R - Body ground	A/T shift position signal (L)	Ignition switch ON, A/T L indicator light ON	10 to 14 V
   C19-2 - Body ground*5	P-L - Body ground	A/T shift position signal (2)	Ignition switch ON, A/T 2 indicator light OFF	Below 1 V
   C19-2 - Body ground*5	P-L - Body ground	A/T shift position signal (2)	Ignition switch ON, A/T 2 indicator light ON	10 to 14 V
   C19-3 - Body ground*5	L - Body ground	A/T shift position signal (2)	Ignition switch ON, A/T 2 indicator light OFF	Below 1 V
   C19-3 - Body ground*5	L - Body ground	A/T shift position signal (2)	Ignition switch ON, A/T 2 indicator light ON	10 to 14 V
   C19-3 - Body ground*5	L - Body ground	A/T shift position signal (3)	Ignition switch ON, A/T 3 indicator light OFF	Below 1 V
   C19-3 - Body ground*5	L - Body ground	A/T shift position signal (3)	Ignition switch ON, A/T 3 indicator light ON	10 to 14 V
   C19-4 - Body ground*5	G-O - Body ground	A/T shift position signal (3)	Ignition switch ON, A/T 3 indicator light OFF	Below 1 V
   C19-4 - Body ground*5	G-O - Body ground	A/T shift position signal (3)	Ignition switch ON, A/T 3 indicator light ON	10 to 14 V
   C19-4 - Body ground*5	G-O - Body ground	A/T shift position signal (4)	Ignition switch ON, A/T 4 indicator light OFF	Below 1 V
   C19-4 - Body ground*5	G-O - Body ground	A/T shift position signal (4)	Ignition switch ON, A/T 4 indicator light ON	10 to 14 V
   C19-5 - Body ground*6	B-R - Body ground	A/T shift position signal (D)	Ignition switch ON, A/T D indicator light OFF	Below 1 V
   C19-5 - Body ground*6	B-R - Body ground	A/T shift position signal (D)	Ignition switch ON, A/T D indicator light ON	10 to 14 V
   C19-6 - Body ground*6	R-W - Body ground	A/T shift position signal (N)	Ignition switch ON, A/T N indicator light OFF	Below 1 V
   C19-6 - Body ground*6	R-W - Body ground	A/T shift position signal (N)	Ignition switch ON, A/T N indicator light ON	10 to 14 V
   C19-9 - Body ground*3	G-B - Body ground	Signal for amount of fuel consumption	Engine running	Pulse generation
   C19-10 - Body ground*7	L - Body ground	Injector signal	Engine running	Pulse generation
   C19-14 - Body ground*6	R-Y - Body ground	A/T shift position signal (R)	Ignition switch ON, A/T L indicator light OFF	Below 1 V
   C19-14 - Body ground*6	R-Y - Body ground	A/T shift position signal (R)	Ignition switch ON, A/T R indicator light ON	10 to 14 V

   HINT:

   *1: 4WD (A/T)

   *2: w/ ABS

   *3: 1KD-FTV, 2KD-FTV

   *4: w/ Cruise control system

   *5: 1GR-FE (A/T), 1KD-FTV (A/T)

   *6: A/T

   *7: 1TR-FE, 2TR-FE, 1GR-FE

   If the result is not as specified, the combination meter may be malfunctioning.





5. Using an oscilloscope, check the signal waveform of the meter.
   

   Waveform 1 (Reference) 

   Item	Content
   Terminal No.	C8-5 - Body ground
   Tool Setting	5 V/DIV., 10 msec./DIV.
   Vehicle Condition	Driving at approx. 20 km/h (12 mph)

   HINT:

   As vehicle speed increases, the wavelength shortens.

   Waveform 2 (Reference) 

   Item	Content
   Terminal No.	C8-7 - Body ground
   Tool Setting	5 V/DIV., 10 msec./DIV.
   Vehicle Condition	Engine idling

   HINT:

   As vehicle speed increases, the wavelength shortens.

1. Disconnect the A27 meter connector.
   

2. Measure the voltage and resistance of the wire harness side connector.
   
   

   Symbols (Terminal No.)	Wiring Color	Terminal Description	Condition	Specified Condition
   +B (A27-14) - Body ground	R - Body ground	+B power supply	Always	10 to 14 V
   IG (A27-12) - Body ground	R-B - Body ground	IG power supply	Ignition switch ON	10 to 14 V
   IG (A27-12) - Body ground	R-B - Body ground	IG power supply	Ignition switch OFF	Below 1 V
   ACC (A27-13) - Body ground	G-R - Body ground	ACC power supply	Ignition switch ACC	10 to 14 V
   ACC (A27-13) - Body ground	G-R - Body ground	ACC power supply	Ignition switch OFF	Below 1 V
   GND1 (A27-1) - Body ground	LG - Body ground	Ground	Always	Below 1 Ω
   SGND (A27-10) - Body ground	BR - Body ground	Ground	Always	Below 1 Ω

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

3. Reconnect the A27 meter connector.
   

4. Measure the voltage of the connector.
   
   

   Symbols (Terminal No.)	Wiring Color	Terminal Description	Condition	Specified Condition
   SG (A27-2) - TH+ (A27-3)	BR-Y - W-G	A/C ambient temperature sensor signal	Ignition switch ON, ambient temperature 25 °C (77 °F)	1.35 to 1.75 V
   SG (A27-2) - TH+ (A27-3)	BR-Y - W-G	A/C ambient temperature sensor signal	Ignition switch ON, ambient temperature 40°C (104 °F)	0.85 to 2.34 V

   If the result is not as specified, the accessory meter may be malfunctioning.
   

HINT:

*1: A/T

*2: 1KD-FTV, 2KD-FTV

*3: 1KD-FTV (A/T)

*4: w/o Airbag

*5: w/ Airbag

*6: w/ Cruise Control System

*7: 4WD

HINT:

*1: A/T

*2: 1KD-FTV (A/T)

*3: 1GR-FE (A/T)

*4: 1GR-FE, 1KD-FTV

*5: 1TR-FE, 2TR-FE, 1GR-FE

*6: 1TR-FE, 2TR-FE

*7: w/ Accessory meter assembly (Multi-display)