Terminals Of Ecu
WARNING: This page is about a different car, the 2003 Lexus IS 300. However, it is still accessible from the selected car via links, so may be relevant.
ECU CONNECTOR TERMINALS VOLTAGE AND CONTINUITY SPECIFICATION
| Symbols (Terminals No.) | Wiring Color | Condition | STD Voltage (V) |
|---|---|---|---|
| HAZD <=> GND (A13-1 <=> A12-18) | G-W <=> W-B | IG ON. Hazard switch: ON | Continuity |
| IG ON. Hazard switch: OFF | No Continuity | ||
| AIF <=> GND (A13-2 <=> A12-18) | R-W <=> W-B | IG ON. Air inlet selector: FRESH | Below 1.0 V |
| IG ON. Air inlet selector: RECIRC | No voltage | ||
| AOD <=> GND (A13-3 <=> A12-18) | L-R <=> W-B | IG ON. Mode selector: FACE | Below 1.0 V |
| IG ON. Mode selector: DEF | 10 - 14 V | ||
| TS-SG (A13-5 <=> A13-20) | GR-L <=> BR-W | IG ON. Solar sensor subject to electric light | 0.8 - 4.3 V |
| IG ON. Solar sensor is covered by a cloth | Below 0.8 V | ||
| TPM <=> SG (A13-6 <=> A13-20) | R-Y <=> BR-W | IG ON. Mode selector: FACE | 3.5 - 4.5 V |
| IG ON. Mode selector: DEF | 0.5 - 1.5 V | ||
| TE <=> SG (A13-7 <=> A13-20) | B-R <=> BR-W | IG ON. Evaporator temp.: 0 °C (32 °F) | 2.0 - 2.4 V |
| IG ON. Evaporator temp.: 15 °C (59 °F) | 1.4 - 1.8 V | ||
| S5 <=> SG (A13-8 <=> A13-20) | GR-R <=> BR-W | IG ON. | 4.5 - 5.5 V |
| MPX+ <=> GND (A13-10 <=> A12-18) | O <=> W-B | IG ON. | Pulse generation |
| AIR <=> GND (A13-11 <=> A12-18) | Y-G <=> W-B | IG ON. Air inlet selector: FRESH | Below 1.0 V |
| IG ON. Air inlet selector: RECIRC | 10 - 14 V | ||
| AOF <=> GND (A13-12 <=> A12-18) | P-L <=> W-B | IG ON. Mode selector: FACE | 10 - 14 V |
| IG ON. Mode selector: DEF | Below 1.0 V | ||
| AMC <=> GND (A13-13 <=> A12-18) | P-B <=> W-B | IG ON. Temperature control: Max. Hot | Below 1.0 V |
| IG ON. Temperature control: Max. Cool | 10 - 14 V | ||
| AMH <=> GND (A13-14 <=> A12-18) | LG-R <=> W-B | IG ON. Temperature control: Max. Hot | 10 - 14 V |
| IG ON. Temperature control: Max. Cool | Below 1.0 V | ||
| TP <=> SG (A13-15 <=> A13-20) | V-W <=> BR-W | IG ON. Temperature control: Max. Hot | 0.5 - 1.5 V |
| IG ON. Temperature control: Max. Cool | 3.5 - 4.5 V | ||
| TPI <=> SG (A13-16 <=> A13-20) | GR-R <=> BR-W | IG ON. Air inlet selector: RECIRC | 3.5 - 4.5 V |
| IG ON. Air inlet selector: FRESH | 0.5 - 1.5 V | ||
| TR <=> SG (A13-17 <=> A13-20) | L-W <=> BR-W | IG ON. Cabin temp.: 25 °C (77 °F) | 1.8 - 2.2 V |
| IG ON. Cabin temp.: 40 °C (104 °F) | 1.2 - 1.6 V | ||
| SG <=> Body Ground (A13-20 <=> Body Ground) | BR-W <=> Body Ground | Always | Continuity |
| MPX- <=> GND (A12-1 <=> A12-18) | L <=> W-B | IG ON. | Pulse generation |
| PKB <=> GND (A12-3 <=> A12-18) | Y-R <=> W-B | IG ON. Brake warning light: ON | Below 1.0 V |
| IG ON. Brake warning light: OFF | 10 - 14 V | ||
| PWR <=> GND (A12-4 <=> A12-18) | L-W <=> W-B | IG ON. Pattern select switch: PWR | Below 1.0 V |
| IG ON. Pattern select switch: Except PWR | 10 - 14 V | ||
| P-S/B <=> GND (A12-5 <=> A12-18) | P-G <=> W-B | IG ON. Passenger seat belt warning: Flash | Below 1.0 V |
| IG ON. Passenger seat belt warning: OFF | 10 - 14 V | ||
| MHTR <=> GND (A12-6 <=> A12-18) | G-0 <=> W-B | IG ON. Defogger switch: ON | 10 - 14 V |
| IG ON. Defogger switch: OFF | Below 1.0 V | ||
| ACC <=> GND (A12-7 <=> A12-18) | GR <=> W-B | IG ACC. | 10 - 14 V |
| IG OFF. | Below 1.0 V | ||
| +B <=> Body ground (A12-8 <=> Body ground) | R-Y <=> Body Ground | Always | 10 - 14 V |
| HR <=> Body Ground (A12-10 <=> Body Ground) | Body Ground | IG ON. | Below 1.0 V |
| IG OFF. | 10 - 14 V | ||
| WIP <=> GND (A12-11 <=> A12-18) | L-R <=> W-B | IG ON. Wiper switch: ON | Pulse generation |
| BLW <=> GND (A12-12 <=> A12-18) | V <=> W-B | IG ON. Operate blower motor | Pulse generation |
| SNOW <=> GND (A12-13 <=> A12-18) | B-Y <=> W-B | IG ON. Pattern select switch: SNOW | Below 1.0 V |
| IG ON. Pattern select switch: Except SNOW | 10 - 14 V | ||
| REOST <=> GND (A12-14 <=> A12-18) | W-G <=> W-B | Light control switch: ON | Below 1.0 V |
| Light control switch: OFF | No voltage | ||
| ILL+ <=> GND (A12-15 <=> A12-18) | G <=> W-B | Light control switch: ON | 10 - 14 V |
| Light control switch: OFF | Below 1.0 V | ||
| IG <=> GND (A12-16 <=> A12-18) | B-R <=> W-B | IGON. | 10 - 14 V |
| IG OFF. | Below 1.0 V | ||
| GND <=> Body ground (A12-18 <=> Body ground) | W-B <=> Body Ground | Always | Continuity |