METER / GAUGE SYSTEM TERMINALS OF ECU

COMBINATION METER ASSEMBLY

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

   Terminal No. (Symbol)	Wiring Color	Terminal Description	Condition	Specified Condition
   E46-1 (RLMT)*1 - Body ground	G - Body ground	Rear seat belt indicator light LH signal	Ignition switch ON, rear seat belt indicator light LH off	11 to 14 V
   			Ignition switch ON, rear seat belt indicator light LH on	Below 1 V
   E46-2 (RCMT)*1 - Body ground	L - Body ground	Rear seat belt indicator light center signal	Ignition switch ON, rear seat belt indicator light center off	11 to 14 V
   			Ignition switch ON, rear seat belt indicator light center on	Below 1 V
   E46-3 (RRMT)*1 - Body ground	R - Body ground	Rear seat belt indicator light RH signal	Ignition switch ON, rear seat belt indicator light RH off	11 to 14 V
   			Ignition switch ON, rear seat belt indicator light RH on	Below 1 V
   E46-5 (SI) - Body ground	R - Body ground	Speed signal for other system (Input)	Ignition switch ON, wheel being rotated	Pulse generation (See waveform 1)
   E46-6 (+S) - Body ground	V - Body ground	Speed signal for other system (Output)	Ignition switch ON, wheel being rotated	Pulse generation (See waveform 1)
   E46-7 (P/SB) - Body ground	L - Body ground	Front passenger seat belt buckle switch signal	Ignition switch ON, front passenger seat occupied, and front passenger seat belt unfastened	Below 1 V
   			Ignition switch ON, front passenger seat occupied, and front passenger seat belt fastened	11 to 14 V
   E46-8 (S)*2 - Body ground	GR - Body ground	Fuel sediment warning signal	Ignition switch ON, fuel sediment warning light off or "DRAIN WATER FROM FUEL FILTER" not displayed	11 to 14 V
   			Ignition switch ON, fuel sediment warning light on or "DRAIN WATER FROM FUEL FILTER" displayed	Below 1 V
   E46-9 (S)*3 - Body ground	V - Body ground	Oil pressure signal	Idling	11 to 14 V
   			Ignition switch ON	Below 1 V
   E46-11 (CHK) - Body ground	LG - Body ground	MIL (Check engine warning light) signal	Ignition switch ON, MIL off	11 to 14 V
   			Ignition switch ON, MIL on	Below 1 V
   E46-12 (SW) - Body ground	Y - Body ground	Brake fluid level signal	Ignition switch ON, brake fluid level not low	11 to 14 V
   			Ignition switch ON, brake fluid level low	Below 1 V
   E46-13 (CHG-)*4 - Body ground	G - Body ground	Charge warning signal	Ignition switch ON, charge warning light off or "Charge warning (Charge warning symbol)" not displayed	Below 1 V
   			Ignition switch ON, charge warning light on or "Charge warning (Charge warning symbol)" displayed	11 to 14 V
   E46-14 (-) - Body ground	W-B - Body ground	Ground	Always	Below 1 Ω
   E46-16 (L) - E46-15 (E)	V - BR	Fuel level signal	Ignition switch ON, fuel level warning off	Below 1 V
   			Ignition switch ON, fuel level warning on	4.5 to 9 V
   E46-19 (+) - Body ground	R - Body ground	High beam signal	Ignition switch ON, high beam off	Below 1 V
   			Ignition switch ON, high beam on	11 to 14 V
   E46-21 (ET) - Body ground	BR - Body ground	Ground	Always	Below 1 Ω
   E46-22 (BRQ)*5 - Body ground	GR - Body ground	Transmission control ECU assembly communication line	Always	Below 1.44 V
   E46-23 (TX+)*5 - Body ground	LG - Body ground	Transmission control ECU assembly communication line	Ignition switch ON	Pulse generation (See waveform 2)
   E46-24 (RLSB)*1 - Body ground	Y - Body ground	Rear seat belt buckle switch LH signal	Ignition switch ON, rear seat belt buckle switch LH unfastened	Below 1 V
   			Ignition switch ON, rear seat belt buckle switch LH fastened	11 to 14 V
   E46-25 (RCSB)*1 - Body ground	L - Body ground	Rear seat belt buckle switch center signal	Ignition switch ON, rear seat belt buckle switch center unfastened	Below 1 V
   			Ignition switch ON, rear seat belt buckle switch center fastened	11 to 14 V
   E46-26 (RRSB)*1 - Body ground	R - Body ground	Rear seat belt buckle switch RH signal	Ignition switch ON, rear seat belt buckle switch RH unfastened	Below 1 V
   			Ignition switch ON, rear seat belt buckle switch RH fastened	11 to 14 V
   E46-27 (OILW)*2 - Body ground	SB - Body ground	Oil level signal	Ignition switch ON, oil level not low	11 to 14 V
   			Ignition switch ON, oil level low	Below 1 V
   E46-28 (SW1)*6 - Body ground	B - Body ground	Steering pad switch assembly (DISP switch) signal	Ignition switch ON, DISP switch not pressed	4 to 5 V
   			Ignition switch ON, DISP switch pressed	Below 1 V
   E46-29 (TWS2)*7 - Body ground	P - Body ground	Temperature switch signal	Ignition switch ON, water temperature hot warning light off	4.9 to 5.1 V
   			Ignition switch ON, water temperature hot warning light on	Below 1 V
   E46-31 (CANL) - Body ground	W - Body ground	CAN communication line	-	-
   E46-32 (CANH) - Body ground	LG - Body ground	CAN communication line	-	-
   E46-35 (TX1+) - E46-34 (TX1-)	G - W	Ambient temperature sensor signal	Ignition switch ON	4.4 to 5.6 V
   E46-39 (IG+) - Body ground	P - Body ground	Ignition switch signal	Ignition switch off	Below 1 V
   			Ignition switch ON	11 to 14 V
   E46-40 (B) - Body ground	W - Body ground	Battery	Always	11 to 14 V
   E45-1 (B) - Body ground	B - Body ground	Battery	Always	11 to 14 V
   E45-3 (HAZ) - Body ground	GR - Body ground	Hazard warning switch signal	Ignition switch ON, hazard warning switch not pressed	11 to 14 V
   			Ignition switch ON, hazard warning switch pressed	Below 1 V
   E45-7 (LR) - Body ground	L - Body ground	RH turn indicator light signal (Output)	Ignition switch ON, RH turn indicator light off	Below 1 V
   			Ignition switch ON, RH turn indicator light blinks	11 to 14 V ←→ Below 1 V
   E45-9 (ER) - Body ground	P - Body ground	RH turn indicator light signal (Input)	Ignition switch ON, RH turn signal switch off	11 to 14 V
   			Ignition switch ON, RH turn signal switch on	Below 1 V
   E45-10 (EL) - Body ground	LG - Body ground	LH turn indicator light signal (Input)	Ignition switch ON, LH turn signal switch off	11 to 14 V
   			Ignition switch ON, LH turn signal switch on	Below 1 V
   E45-11 (S) - Body ground	R - Body ground	Rear fog indicator light signal	Ignition switch ON, rear fog indicator light off	Below 1 V
   			Ignition switch ON, rear fog indicator light on	11 to 14 V
   E45-12 (FOG)*8 - Body ground	G - Body ground	Front fog indicator light signal	Ignition switch ON, front fog indicator light off	Below 1 V
   			Ignition switch ON, front fog indicator light on	11 to 14 V
   E45-13 (LL) - Body ground	Y - Body ground	LH turn indicator light signal (Output)	Ignition switch ON, LH turn indicator light off	Below 1 V
   			Ignition switch ON, LH turn indicator light blinks	11 to 14 V ←→ Below 1 V

   • *1: w/ Rear seat belt warning

   • *2: for Diesel

   • *3: for Gasoline

   • *4: w/o Generator control ECU assembly

   • *5: for Multi-mode manual transaxle

   • *6: w/ Steering pad switch

   • *7: w/ Exhaust heat recirculation system

   • *8: w/ Front fog light

   1. 

      Waveform 1 (Reference):

      Item	Condition
      Tool setting	5 V/DIV., 20 ms./DIV.
      Vehicle condition	Ignition switch ON, wheel being rotated

      Tip:

      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.

   2. 

      Waveform 2 (Reference):

      Item	Condition
      Tool setting	2 V/DIV., 500 μs/DIV.
      Vehicle condition	Ignition switch ON