Terminals Of ECM
NOTE:
- The ECM has waterproof connectors. Therefore, voltage or waveforms cannot be checked with the connectors connected to the vehicle.
- The standard normal voltage (reference values) between each pair of the ECM terminals is shown in the table below. The appropriate conditions for checking each pair of the terminals are also indicated. The result of checks should be compared with the standard normal voltage for that pair of terminals, displayed in the Specified Condition column. The illustration above can be used as a reference to identify the ECM terminal locations.
ECM CONNECTOR TERMINALS REFERENCE
| Symbol (Terminal No.) | Wiring Color | Terminal Description | Condition | Specified Condition |
|---|---|---|---|---|
| BATT (A53-20) - E1 (E83-104) | L - BR | Battery (for measuring battery voltage and for ECM memory) | Always | 9 to 14 V |
| +BM (E83-20) - E1 (E83-104) | P - BR | Power source of throttle actuator | Always | 9 to 14 V |
| IGSW (A53-11) - E1 (E83-104) | B-W - BR | Power switch | Power switch ON (IG) | 9 to 14 V |
| +B (A53-2) - E1 (E83-104) | B-R - BR | Power source of ECM | Power switch ON (IG) | 9 to 14 V |
| +B1 (A53-1) - E1 (E83-104) | B-R - BR | Power source of ECM | Power switch ON (IG) | 9 to 14 V |
| OC1+ (E83-8) - OC1- (E83-7) | W - Y-B | Camshaft timing oil control valve (OCV) (intake side [bank 1]) | Power switch ON (IG) | Pulse generation (see waveform 1) |
| OC2+ (E83-4) - OC2- (E83-3) | LG - L-B | Camshaft timing oil control valve (OCV) (intake side [bank 2]) | Power switch ON (IG) | Pulse generation (see waveform 1) |
| OE1+ (E83-6) - OE1- (E83-5) | LG - L-W | Camshaft timing oil control valve (OCV) (exhaust side [bank 1]) | Power switch ON (IG) | Pulse generation (see waveform 1) |
| OE2+ (E83-2) - OE2- (E83-1) | R-B - G-B | Camshaft timing oil control valve (OCV) (exhaust side [bank 2]) | Power switch ON (IG) | Pulse generation (see waveform 1) |
| MREL (A53-12) - E1 (E83-104) | Y - BR | EFI MAIN relay | Power switch ON (IG) | 9 to 14 V |
| VC (E83-125) - E2 (E83-103) | L - BR | Power source for sensor (specific voltage) | Power switch ON (IG) | 4.5 to 5.0 V |
| VC2 (E83-120) - E3 (E83-97) | W-B - W-B | Power source for sensor (specific voltage) | Power switch ON (IG) | 4.5 to 5.0 V |
| VG (E83-102) - E2G (E83-101) | G-B - B-W | Mass air flow meter | Idling, Shift lever position P or N, A/C switch OFF | 0.5 to 3.0 V |
| THA (E83-55) - E3 (E83-97) | G - W-B | Intake air temperature sensor | Idling, Intake air temperature 20°C (68°F) | 0.5 to 3.4 V |
| THW (E83-114) - E2 (E83-103) | R - BR | Engine coolant temperature sensor | Idling, Engine coolant temperature 80°C (176°F) | 0.2 to 1.0 V |
| TAM (A53-53) - E3 (E83-97) | R - W-B | Ambient temperature sensor | Power switch ON (IG) at 25°C (77°F) | 1.8 to 2.2 V |
| Power switch ON (IG) at 40°C (104°F) | 1.2 to 1.6 V | |||
| VTA1 (E83-80) - E3 (E83-97) | R-B - W-B | Throttle position sensor (for engine control) | Idling, Accelerator pedal released | 0.5 to 1.2 V |
| VTA1 (E83-80) - E3 (E83-97) | R-B - W-B | Throttle position sensor (for engine control) | 2,500 rpm (Depress accelerator pedal fully) | 0.6 to 1.2 V |
| VTA2 (E83-79) - E3 (E83-97) | L-B - W-B | Throttle position sensor (for sensor malfunction detection) | Idling, Accelerator pedal released | 2.1 to 3.1 V |
| VTA2 (E83-79) - E3 (E83-97) | L-B - W-B | Throttle position sensor (for sensor malfunction detection) | 2,500 rpm (Depress accelerator pedal fully) | 2.2 to 3.2 V |
| HA1A (E83-86) - E1 (E83-104) | V - BR | A/F sensor heater | Idling | Below 3.0 V |
| HA2A (E83-109) - E1 (E83-104) | B-L - BR | |||
| HA1A (E83-86) - E1 (E83-104) | V - BR | A/F sensor heater | Power switch ON (IG) | 9 to 14 V |
| HA2A (E83-109) - E1 (E83-104) | B-L - BR | |||
| A1A+ (E83-67) - E1 (E83-104) | R - BR | A/F sensor | Power switch ON (IG) | 3.3 V* |
| A2A+ (E83-65) - E1 (E83-104) | B - BR | A/F sensor | Power switch ON (IG) | 3.3 V* |
| A1A- (E83-66) - E1 (E83-104) | G - BR | A/F sensor | Power switch ON (IG) | 3.0 V* |
| A2A- (E83-64) - E1 (E83-104) | W - BR | A/F sensor | Power switch ON (IG) | 3.0 V* |
| HT1B (E83-63) - E03 (E83-107) | Y-B - W-B | Heated oxygen sensor heater | Idling | Below 3.0 V |
| HT2B (E83-62) - E03 (E83-107) | V - W-B | |||
| HT1B (E83-63) - E03 (E83-107) | Y-B - W-B | Heated oxygen sensor heater | Power switch ON (IG) | 9 to 14 V |
| HT2B (E83-62) - E03 (E83-107) | V - W-B | |||
| OX1B (A53-57) - O1B- (A53-58) | R - G | Heated oxygen sensor | Maintain engine speed at 2,500 rpm for 2 minutes after warming up sensor | Pulse generation (see waveform 2) |
| OX2B (A53-55) - O2B- (A53-54) | B - W | |||
| #1D (E83-40) - E1 (E83-104) | G-W - BR | Fuel injector (for direct injection) | Power switch ON (IG) | 0 to 5V |
| #2D (E83-37) - E1 (E83-104) | B-Y - BR | |||
| #3D (E83-39) - E1 (E83-104) | P-L - BR | |||
| #4D (E83-36) - E1 (E83-104) | LG-B - BR | |||
| #5D (E83-38) - E1 (E83-104) | V - BR | |||
| #6D (E83-35) - E1 (E83-104) | R-B - BR | |||
| #1D (E83-40) - E1 (E83-104) | G-W - BR | Fuel injector (for direct injection) | Idling | Pulse generation (see waveform 3) |
| #2D (E83-37) - E1 (E83-104) | B-Y - BR | |||
| #3D (E83-39) - E1 (E83-104) | P-L - BR | |||
| #4D (E83-36) - E1 (E83-104) | LG-B - BR | |||
| #5D (E83-38) - E1 (E83-104) | V - BR | |||
| #6D (E83-35) - E1 (E83-104) | R-B - BR | |||
| #1P (E83-45) - E1 (E83-104) | Y-B - BR | Fuel injector (for port injection) | Power switch ON (IG) | 9 to 14 V |
| #2P (E83-44) - E1 (E83-104) | B-Y - BR | |||
| #3P (E83-85) - E1 (E83-104) | L-W - BR | |||
| #4P(E83-84) - E1 (E83-104) | LG - BR | |||
| #5P (E83-83) - E1 (E83-104) | R-W - BR | |||
| #6P (E83-82) - E1 (E83-104) | R - BR | |||
| #1P (E83-45) - E1 (E83-104) | Y-B - BR | Fuel injector (for port injection) | Idling | Pulse generation (see waveform 16) |
| #2P (E83-44) - E1 (E83-104) | B-Y - BR | |||
| #3P (E83-85) - E1 (E83-104) | L-W - BR | |||
| #4P (E83-84) - E1 (E83-104) | LG - BR | |||
| #5P (E83-83) - E1 (E83-104) | R-W - BR | |||
| #6P (E83-82) - E1 (E83-104) | R - BR | |||
| KNK1 (E83-88) - EKNK (E83-87) | B - W | Knock sensor (bank 1) | Engine speed at 4,000 rpm after warming up engine | Pulse generation (see waveform 4) |
| KNK2 (E83-111) - EKN2 (E83-110) | R - G | Knock sensor (bank 2) | Engine speed at 4,000 rpm after warming up engine | Pulse generation (see waveform 4) |
| VV1+ (E83-77) - VV1- (E83-76) | Y - L-Y | Variable valve timing (VVT) sensor (intake side [bank 1]) | Idling | Pulse generation (see waveform 5) |
| VV2+ (E83-90) - VV2- (E83-89) | R - L-W | Variable valve timing (VVT) sensor (intake side [bank 2]) | Idling | Pulse generation (see waveform 5) |
| NE+ (E83-69) - NE- (E83-68) | R - G | Crankshaft position sensor | Idling | Pulse generation (see waveform 5, 6) |
| EV1+ (E83-100) - EV1- (E83-99) | B - W | Variable valve timing (VVT) sensor (exhaust side [bank 1]) | Idling | Pulse generation (see waveform 6) |
| EV2+ (E83-113) - EV2- (E83-112) | G - R | Variable valve timing (VVT) sensor (exhaust side [bank 2]) | Idling | Pulse generation (see waveform 6) |
| IGT1 (E83-17) - E1 (E83-104) | L-R - BR | Ignition coil (ignition signal) | Idling | Pulse generation (see waveform 7) |
| IGT2 (E83-14) - E1 (E83-104) | L-B - BR | |||
| IGT3 (E83-16) - E1 (E83-104) | V - BR | |||
| IGT4 (E83-13) - E1 (E83-104) | P-L - BR | |||
| IGT5 (E83-15) - E1 (E83-104) | W-L - BR | |||
| IGT6 (E83-12) - E1 (E83-104) | W-L - BR | |||
| IGF1 (E83-11) - E1 (E83-104) | G - BR | Ignition coil (ignition confirmation signal) | Power switch ON (IG) | 4.5 to 5.0 V |
| IGF2 (E83-10) - E1 (E83-104) | G-B - BR | |||
| IGF1 (E83-11) - E1 (E83-104) | G - BR | Ignition coil (ignition confirmation signal) | Idling | Pulse generation (see waveform 7) |
| IGF2 (E83-10) - E1 (E83-104) | G-B - BR | |||
| PRG(E83-81) - E1 (E83-104) | W - BR | Purge VSV | Power switch ON (IG) | 9 to 14 V |
| PRG (E83-81) - E1 (E83-104) | W - BR | Purge VSV | Idling | Pulse generation (see waveform 8) |
| M+ (E83-19) - ME01 (E83-43) | B - B | Throttle actuator | Idling with warm engine | Pulse generation (see waveform 9) |
| M- (E83-18) - ME01 (E83-43) | W - B | Throttle actuator | Idling with warm engine | Pulse generation (see waveform 10) |
| FC (A53-7) - E1 (E83-104) | R-G - BR | Fuel pump control | Power switch ON (IG) | 9 to 14 V |
| FC (A53-7) - E1 (E83-104) | R-G - BR | Fuel pump control | Idling | 0 to 3V |
| FPR (A53-6) - E1 (E83-104) | R-W - BR | Fuel pump control | Cranking | 9 to 14 V |
| FPR (A53-6) - E1 (E83-104) | R-W - BR | Fuel pump control | Idling | 0 to 3V |
| W (A53-24) - E1 (E83-104) | R-L - BR | MIL | Power switch ON (IG) | Below 3.0 V |
| W (A53-24) - E1 (E83-104) | R-L - BR | MIL | Idling | 0 to 3V |
| TC (A53-27) - E1 (E83-104) | V - BR | Terminal TC of DLC3 | Power switch ON (IG) | 9 to 14 V |
| TACH (A53-15) - E1 (E83-104) | W-L - BR | Engine speed | Idling | Pulse generation (see waveform 11) |
| VPMP (A53-17) - E1 (E83-104) | LG - BR | Vent valve (built into canister pump module) | Power switch ON (IG) | 9 to 14 V |
| MPMP (A53-16) - E1 (E83-104) | P - BR | Leak detection pump (built into pump module) | Leak detection pump OFF | Below 3 V |
| MPMP (A53-16) - E1 (E83-104) | P - BR | Leak detection pump (built into canister pump module) | Leak detection pump ON | 9 to 14 V |
| PPMP (A53-60) - E1 (E83-104) | V - BR | Canister pressure sensor (built into canister pump module) | Power switch ON (IG) | 3 to 3.6 V |
| PTNK (A53-59) - E1 (E83-104) | GR - BR | Fuel tank pressure sensor | Power switch ON (IG) | 0.5 to 4.5 V |
| CCV2 (A53-50) - E1 (E83-104) | W - BR | Fuel vapor-containment valve | Close valve ON (Open) | Below 1.0 V |
| Close valve OFF (Close) | 10 to 14 V | |||
| INJF (E83-34) - E1 (E83-104) | GR - BR | Fuel injector for direct injection confirmation signal | Idling | Pulse generation (see waveform 12) |
| IJF2 (E83-33) - E1 (E83-104) | R - BR | Fuel injector for direct injection confirmation signal | Idling | Pulse generation (see waveform 12) |
| IJF3 (E83-32) - E1 (E83-104) | R-W - BR | Fuel injector for direct injection confirmation signal | Idling | Pulse generation (see waveform 12) |
| FPF1 (E83-52) - E1 (E83-104) | W-L - BR | Fuel pump for high pressure (spill control valve) | Idling | Pulse generation (see waveform 13) |
| FPD (E83-53) - E1 (E83-104) | R-L - BR | Fuel pump for high pressure (spill control valve) | Idling | Pulse generation (see waveform 13) |
| PR(E83-115) - E2 (E83-103) | L-B - BR | Fuel pressure sensor | Idling | 1.8 to 2.3 V |
| DSVR (A53-3) - E1 (E83-104) | B - BR | Fuel relief valve relay | Fuel relief valve relay OFF | 9 to 14 V |
| DSVR (A53-3) - E1 (E83-104) | B - BR | Fuel relief valve relay | Fuel relief valve relay ON | 0 to 3V |
| CANH (A53-52) - E1 (E83-104) | W - BR | CAN communication line | Power switch ON (IG) | Pulse generation (see waveform 14) |
| CANL (A53-33) - E1 (E83-104) | B - BR | CAN communication line | Power switch ON (IG) | Pulse generation (see waveform 15) |
| CAN+ (A53-22) - E1 (E83-104) | W - BR | CAN communication line | Power switch ON (IG) | Pulse generation (see waveform 14) |
| CAN- (A53-21) - E1 (E83-104) | B - BR | CAN communication line | Power switch ON (IG) | Pulse generation (see waveform 15) |
| IREL (A53-13) - E1 (E83-104) | GR - BR | INJ relay | Power switch ON (IG) | 9 to 14 V |
| RDEF (A53-14) - E1 (E83-104) | G-B - BR | DEFOG relay | DEFOG relay OFF | 9 to 14 V |
| DEFOG relay ON | Below 1.5 V | |||
| FUO (A53-51) - E1 (E83-104) | W-B - BR | Fuel lid opener motor | Fuel filler door opener switch ON | Below 1 V |
| Fuel filler door opener switch OFF | 10 to 14 V | |||
| RFC (A53-43) - E1 (E83-104) | G-Y - BR | Cooling fan ECU | Idling with A/C ON | Pulse generation (see waveform 17) |
| KSW (A53-28) - E1 (E83-104) | L - BR | Power source control ECU | Power switch OFF → ON (IG) | 0 to 3V |
| GO1 (A53-40) - E1 (E83-104) | W - BR | Hybrid vehicle control ECU | Camshaft revolution signal | Pulse generation (see waveform 18) |
| NEO1 (A53-41) - E1 (E83-104) | B - BR | Hybrid vehicle control ECU | Crankshaft revolution signal | Pulse generation (see waveform 19) |
| LIDO (A53-18) - E1 (E83-104) | BR - BR | Fuel lid courtesy switch | Fuel filler door opener switch ON | 0 to 3 V |
| Fuel filler door opener switch OFF | 9 to 14 V | |||
| MOPS (E83-47) - E1 (E83-104) | LG-B - BR | Engine oil pressure switch | Power switch ON (IG) | 9 to 14V |
| Idling | 9 to 14 V | |||
| FUEL (A53-19) - E1 (E83-104) | R - BR | Fuel filler door opener switch | Fuel filler door opener switch ON | Below 3 V |
| Fuel filler door opener switch OFF | 10 to 14 V | |||
| MOL (E83-48) - E1 (E83-104) | G-R - BR | Engine oil level sensor | Power switch ON (IG) | 0 to 3V |
| GO2 (A53-48) - E1 (E83-104) | W - BR | MG ECU | Camshaft revolution signal | Pulse generation (see waveform 18) |
| HINT: *: The ECM terminal voltage is constant regardless of the output voltage from the sensor. |
||||
- WAVEFORM 1
Camshaft timing oil control valve (OCV):
WAVEFORM REFERENCEECM Terminal Name Between OC1+ and OC1- or OC2+ and OC2-
Between OE1+ and OE1- or OE2+ and OE2-Tester Range 5 V/DIV, 1 msec./DIV. Condition Idling HINT:
The wavelength becomes shorter as the engine rpm increases.
- WAVEFORM 2
Heated oxygen sensor:
WAVEFORM REFERENCEECM Terminal Name Between OX1B and O1B- or OX2B and O2B- Tester Range 0.2 V/DIV., 200 msec./DIV. Condition Engine speed maintained at 2,500 rpm for 2 minutes after warning up engine HINT:
In DATA LIST, item O2S B1 S2, O2S B2 S2 shows the ECM input values from the heated oxygen sensor.
- WAVEFORM 3
Fuel injector (for direct injection) No. 1 (to No. 6) injection signal:
WAVEFORM REFERENCEECM Terminal Name Between #1D (to #6D) and E1 Tester Range 2 V/DIV., 20 msec./DIV. Condition Idling HINT:
The wavelength becomes shorter as the engine rpm increases.
- WAVEFORM 4
Knock sensor:
WAVEFORM REFERENCEECM Terminal Name Between KNK1 and EKNK
Between KNK2 and EKN2Tester Range 0.01 to 10 V/DIV., 0.01 to 10 msec./DIV. Condition Engine speed maintained at 4,000 rpm after warming up engine HINT:
- The wavelength becomes shorter as the engine rpm increases.
- The waveforms and amplitudes displayed differ slightly depending on the vehicle.
- WAVEFORM 5
Crankshaft position sensor and VVT sensor for intake camshaft:
WAVEFORM REFERENCEECM Terminal Name Between NE+ and NE-
Between VV1+ and VV1- or VV2+ and VV2-Tester Range 5 V/DIV., 20 msec./DIV. Condition Idling HINT:
The wavelength becomes shorter as the engine rpm increases.
- WAVEFORM 6
Crankshaft position sensor and VVT sensor for exhaust camshaft:
WAVEFORM REFERENCEECM Terminal Name Between NE+ and NE-
Between EV1+ and EV1- or EV2+ and EV2-Tester Range 5 V/DIV., 20 msec./DIV. Condition Idling HINT:
The wavelength becomes shorter as the engine rpm increases.
- WAVEFORM 7
Igniter IGT signal (from ECM to igniter) and Igniter IGF signal (from igniter to ECM):
WAVEFORM REFERENCEECM Terminal Name Between IGT (1 to 6) and E1
Between IGF1 and E1 or IGF2 and E1Tester Range 2 V/DIV., 20 msec./DIV. Condition Idling HINT:
The wavelength becomes shorter as the engine rpm increases.
- WAVEFORM 8
Purge VSV:
WAVEFORM REFERENCEECM Terminal Name Between PRG and E1 Tester Range 5 V/DIV., 50 msec./DIV. Condition Idling HINT:
If the waveform is not similar to the illustration, check the waveform again after idling for 10 minutes or more.
- WAVEFORM 9
Throttle actuator positive terminal:
WAVEFORM REFERENCEECM Terminal Name Between M+ and ME01 Tester Range 5 V/DIV, 1 msec./DIV. Condition Idling with warm engine HINT:
The duty ratio varies depending on the throttle actuator operation.
- WAVEFORM 10
Throttle actuator negative terminal:
WAVEFORM REFERENCEECM Terminal Name Between M- and ME01 Tester Range 5 V/DIV, 1 msec./DIV. Condition Idling with warm engine HINT:
The duty ratio varies depending on the throttle actuator operation.
- WAVEFORM 11
Engine speed signal:
WAVEFORM REFERENCEECM Terminal Name Between TACH and E1 Tester Range 5 V/DIV, 10 msec./DIV. Condition Idling HINT:
The wavelength becomes shorter as the engine rpm increases.
- WAVEFORM 12
Fuel injector (for direct injection) No. 1 (to No. 6) injection signal and injection confirmation signal:
WAVEFORM REFERENCEECM Terminal Name CH1: Between #1D (to #6D) and E1
CH2: Between INJF, IJF2, IJF3 and E1Tester Range 2 V/DIV., 20 msec./DIV. Condition Idling with warm engine HINT:
The wavelength becomes shorter as the engine rpm increases.
- WAVEFORM 13
Fuel pump for high pressure (spill control valve):
WAVEFORM REFERENCEECM Terminal Name CH1: Between FPD and E1
CH2: Between FPF1 and E1Tester Range 2 V/DIV., 5 msec./DIV. Condition Idling with warm engine - WAVEFORM 14
CAN communication signal:
WAVEFORM REFERENCEECM Terminal Name Between CANH and E1 Tester Range 1 V/DIV., 10 μsec./DIV. Condition Stop engine and power switch ON (IG) HINT:
The waveform varies depending on the CAN communication signal.
- WAVEFORM 15
CAN communication signal:
WAVEFORM REFERENCEECM Terminal Name Between CANL and E1 Tester Range 1 V/DIV., 10 μsec./DIV. Condition Stop engine and power switch ON (IG) HINT:
The waveform varies depending on the CAN communication signal.
- WAVEFORM 16
Fuel injector (for port injection) No. 1 (to No. 6) injection signal:
WAVEFORM REFERENCEECM Terminal Name Between #1P (to #6P) and E1 Tester Range 50 V/DIV., 400 μsec./DIV. Condition Idling HINT:
The wavelength becomes shorter as the engine rpm increases.
- WAVEFORM 17
Cooling fan ECU signal:
WAVEFORM REFERENCEECM Terminal Name Between RFC and E1 Tester Range 1 V/DIV., 20 msec./DIV. Condition Idling with A/C ON - WAVEFORM 18
Camshaft revolution signal from ECM to HV Control ECU or MG ECU:
WAVEFORM REFERENCEECM Terminal Name Between GO1 and E1
Between GO2 and E1Tester Range 5 V/DIV., 20 msec./DIV. Condition Power switch ON (READY) with engine running HINT:
The wavelength becomes shorter as the engine rpm increases.
- WAVEFORM 19
Crankshaft revolution signal from ECM to HV Control ECU:
WAVEFORM REFERENCEECM Terminal Name Between NEO1 and E1 Tester Range 5 V/DIV., 1 msec./DIV. Condition Power switch ON (READY) with engine running HINT:
The wavelength becomes shorter as the engine rpm increases.