Terminals Of Ecu [03/2020 - 10/2020]
- COMBINATION METER ASSEMBLY
- Measure the voltage and resistance and check for pulses according to the value(s) in the table below.
Terminal No. (Symbol) Wiring Color Signal Input/Output Condition Specified Condition K21-1 (ILL-) - Body ground LA-L - Body ground Output Taillights off → on Below 1 V → Pulse generation K21-2 (EP) - Body ground W-B - Body ground - Always Below 1 Ω K21-4 (INT) - Body ground L - Body ground Output Ignition switch ON, OK switch on steering pad switch not pushed 8 to 15 V K21-5 (SI) - Body ground W - Body ground Input Ignition switch ON, wheel being rotated Pulse generation (See waveform 1) K21-6 (+S) - Body ground L - Body ground Output Ignition switch ON, wheel being rotated Pulse generation (See waveform 1) K21-7 (VCM) - Body ground BE - Body ground Input Engine started, vacuum warning switch off (brake warning light off) → on (brake warning light on) 11 to 14 V → Below 1 V K21-9 (S)*1 - Body ground LA-R - Body ground Input Engine started → not started 11 to 14 V → Below 1 V K21-12 (SW) - Body ground G - Body ground Input Ignition switch ON, brake fluid level not low (brake warning light off) → low (brake warning light on) 11 to 14 V → Below 1 V K21-14 (FR) - K21-33 (FE) - LG - SB*3
- LG - BE*4
Input Ignition switch ON, fuel level full → low (fuel level warning light on) Pulse generation (See waveform 2) K21-15 (FV) - Body ground - L - Body ground*3
- GR - Body ground*4
Input Ignition switch ON Pulse generation (See waveform 3) K21-17 (WLVL) - Body ground LG - Body ground Input Ignition switch ON, washer fluid level not low → low 11 to 14 V → Below 1 V K21-18 (RLMT) -Body ground BE - Body ground Output Ignition switch ON, rear seat belt warning light LH off → on 11 to 14 V → Below 1 V K21-19 (RCMT) -Body ground R - Body ground Output Ignition switch ON, rear seat belt warning light center off → on 11 to 14 V → Below 1 V K21-20 (RRMT) -Body ground G - Body ground Output Ignition switch ON, rear seat belt warning light RH off → on 11 to 14 V → Below 1 V K21-21 (ES) - Body ground W-B - Body ground - Always Below 1 Ω K21-24 (RLSB) - Body ground SB - Body ground Input Ignition switch ON, rear seat belt LH unfastened → fastened Below 1 V → 11 to 14 V K21-25 (RCSB) - Body ground B - Body ground Input Ignition switch ON, rear seat belt center unfastened → fastened Below 1 V → 11 to 14 V K21-26 (RRSB) - Body ground LG - Body ground Input Ignition switch ON, rear seat belt RH unfastened → fastened Below 1 V → 11 to 14 V K21-27 (OILW) - Body ground W - Body ground Input Ignition switch ON, engine oil level not low → low Below 1 V → 11 to 14 V K21-28 (MSM+) - Body ground GR - Body ground Input Ignition switch ON, up, down, right and left switches on steering pad switch not pushed 4.8 to 5.2 V K21-29 (MSTI) - Body ground R - Body ground Input Ignition switch ON, OK and back switches on steering pad switch not pushed 4.8 to 5.2 V K21-31 (CANL) W Input/Output - - K21-32 (CANH) B Input/Output - - K21-33 (FE) - Body ground - SB - Body ground*3
- BE - Body ground*4
- Always Below 1 Ω K21-35 (FR2) - K21-33 (FE)*3 V - SB Input Ignition switch ON, fuel level full → low (fuel level warning light on) Pulse generation (See waveform 2) K21-36 (TX+)*2 G Input/Output - - K21-37 (TX-)*2 W Input/Output - - K21-39 (IG+) - Body ground LA-GR - Body ground Input Ignition switch off → Ignition switch ON Below 1 V → 11 to 14 V K21-40 (B) - Body ground LA-B - Body ground Input Always 11 to 14 V K20-1 (ODO) - Body ground LA-L - Body ground Input Ignition switch ON, ODO/TRIP switch not pushed 4.8 to 5.2 V K20-2 (TR) - Body ground L - Body ground Input Ignition switch ON, light control rheostat up switch and light control rheostat down switch not pushed 4.8 to 5.2 V K20-3 (HAZ) - Body ground LA-R - Body ground Input Hazard warning signal switch off → pushed 11 to 14 V → Below 1 V K20-5 (SW3) - Body ground LA-B - Body ground - Always Below 1 Ω K20-7 (LR) - Body ground LA-G - Body ground Output Ignition switch ON, RH turn indicator light off → blinking Below 1 V → 11 to 14 V ←→ Below 1 V K20-8 (B) - Body ground LA-B - Body ground Input Always 11 to 14 V K20-10 (TRNL) - Body ground BE - Body ground Output Ignition switch ON, LH turn indicator light off → blinking Below 1 V → 11 to 14 V ←→ Below 1 V K20-11 (LL) - Body ground LA-LG - Body ground Output Ignition switch ON, LH turn indicator light off → blinking Below 1 V → 11 to 14 V ←→ Below 1 V K20-13 (TRNR) - Body ground BE - Body ground Output Ignition switch ON, RH turn indicator light off → blinking Below 1 V → 11 to 14 V ←→ Below 1 V - *1: for 2GR-FKS
- *2: for 8 Inch Display Type Radio and Display Receiver Assembly
- *3: for AWD
- *4: for 2WD
- Waveform 1:
Item Condition Tester connection - K21-5 (SI) - Body ground
- K21-6 (+S) - Body ground
Tool setting 5 V/DIV., 20 ms./DIV. Condition Ignition switch ON, wheel being rotated HINT:
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.
- Waveform 2:
Item Condition Tester connection - K21-14 (FR) - K21-33 (FE)
- K21-35 (FR2) - K21-33 (FE)*
Tool setting 2.5 V/DIV., 20 ms./DIV. Condition Ignition switch ON, fuel level full → low (fuel level warning light on) *: for AWD
HINT:
The magnitude of the voltage (A) changes as shown in the following tables.
- FOR 2WD:
Condition Voltage Ignition switch ON, fuel level full 4.0 to 4.6 V Ignition switch ON, fuel level low (fuel level warning light on) 0.3 to 1.5 V - FOR AWD:
Condition Voltage K21-14 (FR) - K21-33 (FE) K21-35 (FR2) - K21-33 (FE) Ignition switch ON, fuel level full 4.2 to 4.6 V 4.0 to 4.6 V Ignition switch ON, fuel level 1/2 4.2 to 4.6 V 0.3 to 0.7 V Ignition switch ON, fuel level low (fuel level warning light on) 0.3 to 1.5 V 0.3 to 0.7 V
- Waveform 3:
Item Condition Tester connection K21-15 (FV) - Body ground Tool setting 2.5 V/DIV., 20 ms./DIV. Condition Ignition switch ON Standard voltage 4.5 to 5.5 V
- Measure the voltage and resistance and check for pulses according to the value(s) in the table below.