METER / GAUGE SYSTEM TERMINALS OF ECU

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

   Terminal No. (Symbol)	Wiring Color	Terminal Description	Condition	Specified Condition
   D66-3 (+S) - Body ground	Y - Body ground	Speed signal (output)	Vehicle being driven at approximately 20 km/h (12 mph)	Pulse generation (See waveform 1)
   D66-5 (SI) - Body ground	V - Body ground	Speed signal (input)	Vehicle being driven at approximately 20 km/h (12 mph)	Pulse generation (See waveform 1)
   D66-7 (WRNP) - Body ground	W - Body ground	Front passenger side seat belt warning light signal	Passenger seat belt indicator off	11 to 14 V
   			Passenger seat belt indicator blinking	Alternating between below 1 and 11 to 14 V
   D66-10 (SW) - Body ground	G - Body ground	Brake fluid level warning light signal	Ignition switch ON, brake system warning light (red indicator) on	Below 1 V
   			Ignition switch ON, brake system warning light (red indicator) off	11 to 14 V
   D66-11 (PKB1) - Body ground	L - Body ground*1 P - Body ground*2	Passenger side Seat belt condition signal	Ignition switch ON, front passenger side seat belt warning light off	11 to 14 V
   			Ignition switch ON, front passenger side seat belt warning light on	Below 1 V
   D66-12 (TX+) - Body ground	B - Body ground	Parking brake signal	Ignition switch ON, electric parking brake switch off	Pulse generation
   			Ignition switch ON, electric parking brake switch on	Pulse generation
   D66-13 (MSD) - Body ground	Y - Body ground	Rear seat inner belt signal (LH side)	Rear LH seat belt unfastened	Below 1 V
   			Rear LH seat belt fastened	11 to 14 V
   D66-14 (MSTI) - Body ground	P - Body ground	Rear seat inner belt signal (Center)	Rear center seat belt unfastened	Below 1 V
   			Rear center seat belt fastened	11 to 14 V
   D66-15 (MSFM) - Body ground	B - Body ground	Rear seat inner belt signal (RH side)	Rear RH seat belt unfastened	Below 1 V
   			Rear RH seat belt fastened	11 to 14 V
   D66-16 (OILW) - Body ground	L - Body ground	Engine oil level signal	Ignition switch ON, ENGINE OIL LOW displayed	Below 1 V
   			Ignition switch ON, ENGINE OIL LOW not displayed	11 to 14 V
   D66-17 (S) - Body ground	Y - Body ground	Engine oil pressure signal	Engine oil pressure switch on	Below 1 V
   			Engine oil pressure switch off	11 to 14 V
   D66-19 (B) - Body ground	L - Body ground	Turn signal R	Ignition switch ON, turn signal switch neutral position	Below 1 V
   			Ignition switch ON, turn signal switch turned to right	Alternating between below 1 and 11 to 14 V
   D66-20 (B) - Body ground	Y - Body ground	Turn signal L	Ignition switch ON, turn signal switch neutral position	Below 1 V
   			Ignition switch ON, turn signal switch turned to left	Alternating between below 1 and 11 to 14 V
   D66-21 (ET) - Body ground	W-B - Body ground	Cooler (ambient temperature sensor) thermistor ground	Always	Below 1 V
   D66-24 (E) - Body ground	BR - Body ground	Fuel sender gauge ground	Always	Below 1 V
   D66-25 (TX1+) - Body ground	G - Body ground	Cooler (ambient temperature sensor) thermistor ground	Always	Below 1 V
   D66-28 (S) - Body ground	R - Body ground	Fuel sedimenter signal	Ignition switch ON, DRAIN WATER FUEL FILTER displayed	Below 1 V
   			Ignition switch ON, DRAIN WATER FUEL FILTER not displayed	11 to 14 V
   D66-29 (EFI) - Body ground	P - Body ground	MIL (Check engine indicator light) signal	Ignition switch ON, MIL on	Below 1 V
   			Ignition switch ON, MIL off	11 to 14 V
   D66-30 (CHG-) - Body ground	Y - Body ground	CHARGE warning light	Ignition switch ON, CHARGE warning light on	Below 1 V
   			Ignition switch ON, CHARGE warning light off	11 to 14 V
   D66-32 (SW1) - Body ground	GR - Body ground	Spiral cable signal	Ignition switch ON, steering pad DISP switch signal off	Below 1 V
   			Ignition switch ON, steering pad DISP switch signal on	11 to 14 V
   D66-33 (TEMP) - Body ground	W - Body ground	Cooler (ambient temperature sensor) thermistor signal	Outside temperature 25°C (77°F)	1.6 to 1.8 Ω*
   D66-37 (L) - Body ground	V - Body ground	Fuel sender gauge signal	Ignition switch ON	Below 1 V
   			Fuel F (full tank) → E (empty)	4.5 to 9 V
   D66-39 (IG+) - Body ground	P - Body ground	Ignition switch signal	Ignition switch off	Below 1 V
   			Ignition switch ON	11 to 14 V
   D66-40 (B) - Body ground	W - Body ground	Battery	Always	11 to 14 V

   *1: for LHD

   *2: for RHD

   Tech Tips

   *: The standard value changes according to the outside temperature.

   
   

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

2. 

   Using an oscilloscope, check waveform 1.

   Measurement Condition

   Item	Content
   Terminal No. (Symbol)	D66-3 (+S) - Body ground D66-5 (SI) - Body ground
   Tool setting	5 V/DIV., 20 ms./DIV.
   Condition	Being driven at approximately 20 km/h (12 mph)

   Tech Tips

   When the system is functioning normally, one wheel revolution generates 4 pulses. As the vehicle speed increases, the width indicated by (A) in the illustration narrows.

EPB*: Electric Parking Brake System

*1: for LHD

*2: for RHD

*3: w/ Cruise Control System

*4: w/ Dynamic Radar Cruise Control System

*5: w/ Pre-crash Safety System

*6: w/ Adaptive Front-lighting System

*7: for Manual Transaxle

*8: for Automatic Transaxle

*9: w/ Front Fog Light

*10: w/ Rear Fog Light