Terminals Of ECM: Notes
WARNING: This page is about a different variant/trim than selected.
HINT:
The standard normal voltage between each pair of ECM terminals is shown in the table below. The appropriate conditions for checking each pair of terminals is also indicated.
The result of checks should be compared with the standard normal voltage for that pair of terminals, displayed in the STD Voltage column.
The illustration above can be used as a reference to identify the ECM terminal locations.
ECM TERMINALS STD VOLTAGE
| Symbols (Terminals No.) | Wiring Colors | Terminal Descriptions | Conditions | STD Voltage |
|---|---|---|---|---|
| BATT (E6-3) - E1 (E3-5) | R-W - BR | Battery (for measuring battery voltage and for ECM memory) | Always | Between 8 V and 14 V |
| FC (E5-16) - E1 (E3-5) | G-R - BR | Fuel pump control | Ignition switch ON | Between 8 V and 14 V |
| FC (E5-16) - E1 (E3-5) | G-R - BR | Fuel pump control | Idling | Below 1.5 V |
| W (E6-11) - E1 (E3-5) | R-Y - BR | MIL | Idling | Between 8 V and 14 V |
| W (E6-11) - E1 (E3-5) | R-Y - BR | MIL | Ignition switch ON | Below 3.5 V |
| +B (E6-1) - E1 (E3-5) | B - BR | Power source of ECM | Ignition switch ON | Between 8 V and 14 V |
| MREL (E5-4) - E1 (E3-5) | B-W - BR | Power source | Ignition switch ON | Between 8 V and 14 V |
| IGSW (E6-9) - E1 (E3-5) | B-O - BR | Ignition switch | Ignition switch ON | Between 9 V and 14 V |
| F/PS (E6-14) - E1 (E3-5) | Y - BR | Airbag sensor | Idling with warm engine | Pulse generation (See waveform 10) |
| STA (E3-12) - E1 (E3-5) | B - BR | Starter signal | Cranking | 5.5 V or more |
| PSW (E4-30) - E1 (E3-5) | L-R - BR | Power steering oil pressure sensor | Ignition switch ON | Between 8 V and 14 V |
| SPD (E5-17) - E1 (E3-5) | V-W - BR | Speed signal from combination meter | Ignition switch ON, Driving wheel rotating slowly | Pulse generation (See waveform 2) |
| TACH (E5-3) - E1 (E3-5) | B - BR | Engine speed | Idling | Pulse generation |
| VC (E3-18) - E2 (E3-28) | Y - BR | Power source of sensor (specific voltage) | Ignition switch ON | Between 4.5 V and 5.5 V |
| VG (E3-30) - EVG (E3-29) | G - L - W | Mass air flow meter | Idling, A/C switch OFF | Between 1.1 V and 1.5 V |
| OX1A (E4-22) - E1 (E3-5) | R - BR | Heated oxygen sensor (Sensor 1) | Engine speed maintained 2,500 rpm for 2 minutes after warning up sensor | Pulse generation (See waveform 7) |
| HT1A (E4-6) - E03 (E4-7) | P - W-B | Heated oxygen sensor heater (Sensor 1) | Idling | Below 3.0 V |
| HT1A (E4-6) - E03 (E4-7) | P - W-B | Heated oxygen sensor heater (Sensor 1) | Ignition switch ON | Between 8 V and 14 V |
| OX1B (E5-23) - E1 (E3-5) | W - BR | Heated oxygen sensor (Sensor 2) | Engine speed mainained 2,500 rpm for 2 minutes after warning up sensor | Pulse generation (See waveform 8) |
| HT1B (E6-7) - E03 (E4-7) | P-B - W-B | Heated oxygen sensor heater (Sensor 2) | Idling | Below 3.0 V |
| HT1B (E6-7) - E03 (E4-7) | P-B - W-B | Heated oxygen sensor heater (Sensor 2) | Ignition switch ON | Between 8 V and 14 V |
| THW (E3-19) - E2 (E3-28) | W - BR | Engine coolant temperature sensor | Idling, Engine coolant temperature 80°C (176°F) | Between 0.2 V and 1.0 V |
| G2+ (E3-26) - NE- (E3-34) | B - W | Camshaft position sensor | Idling | Pulse generation (See waveform 1) |
| NE+ (E3-27) - NE- (E3-34) | B - W | Camshaft position sensor | Idling | Pulse generation (See waveform 1) |
| THA (E3-20) - E2 (E3-28) | Y-B - BR | Intake air temperature sensor | Idling, Intake air temperature 20°C (68°F) | Between 0.5 V and 3.4 V |
| VTA (E3-21) - E2 (E3-28) | LG - BR | Throttle position sensor | Ignition switch ON, Throttle valve fully closed | Between 0.3 V and 1.0 V |
| VTA (E3-21) - E2 (E3-28) | LG - BR | Throttle position sensor | Ignition switch ON, Throttle valve fully open | Between 3.2 V and 4.9 V |
| #10 (E3-1) - E01 (E3-7) | Y - W-B | Injector | Idling | Pulse generation (See waveform 4) |
| #20 (E3-2) - E01 (E3-7) | B - W-B | Injector | Idling | Pulse generation (See waveform 4) |
| #30 (E3-3) - E01 (E3-7) | W - W-B | Injector | Idling | Pulse generation (See waveform 4) |
| #40 (E3-4) - E01 (E3-7) | L - W-B | Injector | Idling | Pulse generation (See waveform 4) |
| IGT1 (E3-8) - E1 (E3-5) | R-L - BR | Ignition coil and igniter (ignition signal) | Idling | Pulse generation (See waveform 3) |
| IGT2 (E3-9) - E1 (E3-5) | Y-G - BR | Ignition coil and igniter (ignition signal) | Idling | Pulse generation (See waveform 3) |
| IGT3 (E3-10) - E1 (E3-5) | GR - BR | Ignition coil and igniter (ignition signal) | Idling | Pulse generation (See waveform 3) |
| IGT4 (E3-11) - E1 (E3-5) | W - BR | Ignition coil and igniter (ignition signal) | Idling | Pulse generation (See waveform 3) |
| IGF (E3-24) - E1 (E3-5) | L-Y - BR | Ignition coil and igniter (ignition confirmation signal) | Ignition switch ON | Between 4.5 V and 5.5 V |
| IGF (E3-24) - E1 (E3-5) | L-Y - BR | Ignition coil and igniter (ignition confirmation signal) | Idling | Pulse generation (See waveform 3) |
| RSO (E3-16) - E01 (E3-7) | B-L - W-B | Idle air control valve | Ignition switch ON | Between 8 V and 14 V |
| OC1+ (E3-14) - OC1 - (E3-13) | Y - B-Y | Camshaft timing oil control valve for VVT-i | Ignition switch ON | Pulse generation (See waveform 6) |
| KNK1 (E4-1) - EKNK (E4-2) | B - W | Knock sensor | Maintain engine speed 4,000 rpm after warming up engine | Pulse generation (See waveform 9) |
| TC (E6-20) - E1 (E3-5) | P-B - BR | Terminal TC of DLC3 | Ignition switch ON | Between 8 V and 14 V |
| SIL (E5-15) - E1 (E3-5) | L-R - BR | Terminal SIL of DLC3 | Connect hand-held tester or OBD II scan tool to DLC3 | Pulse generation |
| VVL+ (E4-17) - VVL- (E4-16) | B - L-Y | Camshaft timing oil control valve for VVTL-1 | Engine speed 6,000 rpm or more | Pulse generation (See waveform 6) |
| OSW (E5-31) - E1 (E3-5) | B-W - BR | Oil pressure switch for VVTL-i | Ignition switch ON | Between 8 V and 14 V |
| AIRV (E6-4) - E1 (E3-5) | B-L - BR | VSV for secondary air injection system | Ignition switch ON | Between 8 V and 14 V |
| AIRP (E6-5) - E1 (E3-5) | B-O - BR | Air pump control | Ignition switch ON | Between 8 V and 14 V |
| AIP (E5-34) - E2 (E3-28) | G - BR | Manifold Absolute Pressure Sensor | Ignition switch ON | Between 4.5 V and 5.5 V |
| PRG (E4-19) - E1 (E3-5) | L-B - BR | Purge VSV | Engine running | Pulse generation (See waveform 5) |
| VPMP (E3-25) - E1 (E3-5) | R - BR | Vent Valve (built into pump module) | Ignition switch ON | Between 8 V and 14 V |
| MPMP (E4-8) - E1 (E3-5) | GR - BR | Vacuum pump (built into pump module) | Vacuum pump ON | Between 8 V and 14 V |
| PPMP (E6-21) - E2 (E3-28) | L - BR | Pressure Sensor (built into pump module) | Ignition switch ON | Between 3 V and 3.6 V |