Terminals Of Ecu
WARNING: This page is about a different car, the 2007 Lexus IS 250. However, it is still accessible from the selected car via links, so may be relevant.
HINT:
Inspect the connector from the back side while the connector is connected.
- 4WD CONTROL ECU: CONNECTOR TERMINAL REFERENCE
Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition CANH (A32-1) - CANL (A32-14) B - V CAN communication line Engine switch off 54 to 67 Ω RRO (A32-2) - GND (A32-30) P-W-B Rear right wheel speed sensor signal Engine switch on (IG), driving at approximately 18 mph (30 km/h) Pulse generation (see awaveform 1) FRO (A32-3) - GND (A32-30) G-W - W-B Front right wheel speed sensor signal Engine switch on (IG), driving at approximately 18 mph (30 km/h) Pulse generation (see awaveform 1) IG1 (A32-9) - GND (A32-30) B-W - W-B Power source voltage Engine switch on (IG) 10 to 14 V SLC+ (A32-13) - SLC - (A32-32) P-L - G-R Transfer control solenoid signal Engine switch on (IG) Pulse generation (see bwaveform 2) RLO (A32-15) - GND (A32-30) L-R - W-B Rear left wheel speed sensor signal Engine switch on (IG), driving at approximately 18 mph (30 km/h) Pulse generation (see awaveform 1) FLO (A32-16) - GND (A32-30) R-L - W-B Front left wheel speed sensor signal Engine switch on (IG), driving at approximately 18 mph (30 km/h) Pulse generation (see awaveform 1) FREE (A32-23) - GND (A32-30) G-W-B Sets the center differential free Engine switch on (IG), open and short terminals OPA and CG of the DLC3. 10 to 14 V → 0 to 1.5 V GND (A32-30) - Body ground W-B - Body ground Ground Always Below 1 Ω - Waveform 1 (Reference):WAVEFORM REFERENCE 1
Item Contents Tool setting 2 V/DIV, 2 ms./DIV Vehicle condition Driving at approximately 18 mph (30 km/h) HINT:
As vehicle speed (wheel rotation speed) increases, the width of the waveform narrows.
- Waveform 2 (Reference):WAVEFORM REFERENCE 2
Item Contents Tool setting 5 V/DIV, 2 ms./DIV Vehicle condition Engine stop, Engine switch on (IG)
- Waveform 1 (Reference):