SFI SYSTEM TERMINALS OF ECM
Tech Tips
The standard voltage, resistance and waveform between each pair of the ECM terminals is shown in the table below. The appropriate conditions for checking each pair of the terminals is also indicated. The result of checks should be compared with the standard voltage, resistance and waveform for each pair of the terminals as displayed in the Specified Condition column. The illustration above can be used as a reference to identify the ECM terminal locations.
| Terminal No. (Symbol) | Wiring Color | Terminal Description | Condition | Specified Condition |
|---|---|---|---|---|
| A43-1 (BATT) - C1-53 (E1) | GR - BR | Battery (for measuring battery voltage and for ECM memory) | Always | 11 to 14 V |
| A43-2 (+B) - C1-53 (E1) | G - BR | Power source of ECM | Ignition switch ON | 11 to 14 V |
| A43-3 (+B2) - C1-53 (E1) | R - BR | Power source of ECM | Ignition switch ON | 11 to 14 V |
| A43-4 (IGSW) - C1-53 (E1) | W - BR | Ignition switch | Ignition switch ON | 11 to 14 V |
| A43-7 (IREL) - C1-53 (E1) | GR - BR | INJ relay operation signal | Engine stopped, ignition switch ON | 0 to 1.5 V |
| A43-8 (+BM) - C1-53 (E1) | B - BR | Power source of throttle actuator | Always | 11 to 14 V |
| A43-13 (CANH) - C1-53 (E1) | B - BR | CAN communication line | Engine stopped, ignition switch ON | Pulse generation (See waveform 1) |
| A43-14 (EC) - Body ground | W-B - - | Ground | Always | Below 1 Ω |
| A43-17 (S) - C1-53 (E1) | LG - BR | M shift position switch signal | Ignition switch ON, shift lever in M | 11 to 14 V |
| Ignition switch ON, shift lever not in M | Below 1 V | |||
| A43-18 (FPC) - C1-53 (E1) | P - BR | Fuel pump control | Engine stopped, ignition switch ON | Below 1.5 V |
| A43-26 (CANL) - C1-53 (E1) | W - BR | CAN communication line | Engine stopped, ignition switch ON | Pulse generation (See waveform 2) |
| A43-27 (STP) - C1-53 (E1) | G - BR | Stop light switch assembly signal | Brake pedal depressed | 7.5 to 14 V |
| Brake pedal released | Below 1.5 V | |||
| A43-30 (NEO)*1 - C1-53 (E1) | GR - BR | Engine speed signal sent to other ECUs | Idling with warm engine | Pulse generation (See waveform 3) |
| A43-33 (TC) - C1-53 (E1) | G - BR | Terminal TC of DLC3 | Engine stopped, ignition switch ON | 11 to 14 V |
| A43-39 (SPD) - C1-53 (E1) | BE - BR | Vehicle speed signal from combination meter assembly | Driving at 20 km/h (12 mph) | Pulse generation (See waveform 4) |
| A43-42 (ST1-) - C1-53 (E1) | L - BR | Stop light switch assembly signal (opposite to STP terminal) | Ignition switch ON, brake pedal depressed | 0 to 1.5 V |
| Ignition switch ON, brake pedal released | 7.5 to 14 V | |||
| A43-43 (STA) - C1-53 (E1) | P - BR | Starter assembly signal | Cranking | 6.0 V or higher |
| A43-46 (MREL) - C1-53 (E1) | B - BR | EFI-MAIN relay operation signal | Ignition switch ON | 11 to 14 V |
| A43-47 (VPA) - A43-48 (EPA) | G - Y | Accelerator pedal position sensor signal (for engine control) | Ignition switch ON, accelerator pedal fully released | 0.5 to 1.1 V |
| Ignition switch ON, accelerator pedal fully depressed | 2.6 to 4.5 V | |||
| A43-49 (VCPA) - A43-48 (EPA) | B - Y | Power source of accelerator pedal position sensor (for VPA) | Engine stopped, ignition switch ON | 4.5 to 5.5 V |
| A43-50 (VPA2) - A43-51 (EPA2) | R - BE | Accelerator pedal position sensor signal | Ignition switch ON, accelerator pedal fully released | 1.2 to 2.0 V |
| Ignition switch ON, Accelerator pedal fully depressed | 3.4 to 4.75 V | |||
| A43-52 (VCP2) - A43-51 (EPA2) | W - BE | Power source of accelerator pedal position sensor (for VPA2) | Engine stopped, ignition switch ON | 4.5 to 5.5 V |
| A43-58 (KSW) - C1-53 (E1) | B - BR | Key in vehicle signal | Ignition switch off → on (IG) | 0 to 3.0 V |
| C1-2 (OE2+) - C1-3 (OE2-) | R -W | Cam timing oil control solenoid assembly (for exhaust camshaft of bank 2) operation signal | Idling | Pulse generation (See waveform 5) |
| C1-4 (OE1+) - C1-5 (OE1-) | G - R | Cam timing oil control solenoid assembly (for exhaust camshaft of bank 1) operation signal | Idling | Pulse generation (See waveform 5) |
| C1-9 (OC2+) - C1-8 (OC2-) | B - L | Cam timing oil control solenoid assembly (for intake camshaft of bank 2) operation signal | Idling | Pulse generation (See waveform 6) |
| C1-16 (HT2B) - C1-53 (E1) | L - BR | Heated oxygen sensor (bank 2 sensor 2) heater operation signal | Idling | Below 3.0 V |
| Ignition switch ON | 11 to 14 V | |||
| C1-17 (HA2A) - C1-46 (E05) | R - W-B | Air fuel ratio sensor (bank 2 sensor 1) heater operation signal | Idling | Pulse generation (See waveform 7) |
| Ignition switch ON | 11 to 14 V | |||
| C1-18 (+BD2) - C1-53 (E1) | L - BR | Power source of ECM (injector driver) | Engine stopped, ignition switch ON | 11 to 14 V |
| C1-19 (+BD1) - C1-53 (E1) | Y - BR | Power source of ECM (injector driver) | Engine stopped, ignition switch ON | 11 to 14 V |
| C1-20 (E02) - Body ground | W-B - - | Ground | Always | Below 1 Ω |
| C1-21 (E04) - Body ground | W-B - - | Ground | Always | Below 1 Ω |
| C1-23 (FP1+) - C1-22 (FP1-) | Y - L | Fuel pump assembly (for high pressure side) signal | Idling with warm engine | Pulse generation |
| C1-24 (#6D+) - C1-54 (#6D-) | G - BR | No. 6 fuel injector assembly (for direct injection) signal | Idling with warm engine, Data List item "Injection Mode" displays "Direct" | Pulse generation |
| C1-25 (#3D+) - C1-26 (#3D-) | V - P | No. 3 fuel injector assembly (for direct injection) signal | Idling with warm engine, Data List item "Injection Mode" displays "Direct" | Pulse generation |
| C1-27 (#5D+) - C1-57 (#5D-) | L - Y | No. 5 fuel injector assembly (for direct injection) signal | Idling with warm engine, Data List item "Injection Mode" displays "Direct" | Pulse generation |
| C1-28 (#2D+) - C1-58 (#2D-) | G - BR | No. 2 fuel injector assembly (for direct injection) signal | Idling with warm engine, Data List item "Injection Mode" displays "Direct" | Pulse generation |
| C1-29 (#4D+) - C1-59 (#4D-) | V - P | No. 4 fuel injector assembly (for direct injection) signal | Idling with warm engine, Data List item "Injection Mode" displays "Direct" | Pulse generation |
| C1-30 (#1D+) - C1-60 (#1D-) | B - W | No. 1 fuel injector assembly (for direct injection) signal | Idling with warm engine, Data List item "Injection Mode" displays "Direct" | Pulse generation |
| C1-34 (IGT6) - C1-53 (E1) | V - BR | No. 6 ignition coil assembly signal (ignition signal) | Idling with warm engine | Pulse generation (See waveform 8) |
| C1-35 (IGT4) - C1-53 (E1) | B - BR | No. 4 ignition coil assembly signal (ignition signal) | Idling with warm engine | Pulse generation (See waveform 8) |
| C1-36 (IGT2) - C1-53 (E1) | GR - BR | No. 2 ignition coil assembly signal (ignition signal) | Idling with warm engine | Pulse generation (See waveform 8) |
| C1-38 (OC1+) - C1-68 (OC1-) | W - G | Cam timing oil control solenoid assembly (for intake camshaft of bank 1) operation signal | Idling | Pulse generation (See waveform 6) |
| C1-40 (#60) - C1-51 (E01) | G - W-B | No. 6 fuel injector assembly (for port injection) signal | Ignition switch ON | 0 to 5 V |
| Idling with warm engine, Data List item "Injection Mode" displaying "Port" | Pulse generation (See waveform 9) |
|||
| C1-41 (#30) - C1-51 (E01) | B - W-B | No. 3 fuel injector assembly (for port injection) signal | Ignition switch ON | 0 to 5 V |
| Idling with warm engine, Data List item "Injection Mode" displaying "Port" | Pulse generation (See waveform 9) |
|||
| C1-42 (#50) - C1-51 (E01) | R - W-B | No. 5 fuel injector assembly (for port injection) signal | Ignition switch ON | 0 to 5 V |
| Idling with warm engine, Data List item "Injection Mode" displaying "Port" | Pulse generation (See waveform 9) |
|||
| C1-43 (#20) - C1-51 (E01) | BE - W-B | No. 2 fuel injector assembly (for port injection) signal | Ignition switch ON | 0 to 5 V |
| Idling with warm engine, Data List item "Injection Mode" displaying "Port" | Pulse generation (See waveform 9) |
|||
| C1-44 (#40) - C1-51 (E01) | W - W-B | No. 4 fuel injector assembly (for port injection) signal | Ignition switch ON | 0 to 5 V |
| Idling with warm engine, Data List item "Injection Mode" displaying "Port" | Pulse generation (See waveform 9) |
|||
| C1-45 (#10) - C1-51 (E01) | GR - W-B | No. 1 fuel injector assembly (for port injection) signal | Ignition switch ON | 0 to 5 V |
| Idling with warm engine, Data List item "Injection Mode" displaying "Port" | Pulse generation (See waveform 9) |
|||
| C1-46 (E05) - Body ground | W-B - - | Ground | Always | Below 1 Ω |
| C1-47 (M-) - C1-49 (ME01) | P - W-B | Throttle actuator operation signal (negative signal) | Idling with warm engine | Pulse generation (See waveform 10) |
| C1-48 (M+) - C1-49 (ME01) | V - W-B | Throttle actuator operation signal (positive terminal) | Idling with warm engine | Pulse generation (See waveform 11) |
| C1-49 (ME01) - Body ground | W-B - - | Ground | Always | Below 1 Ω |
| C1-50 (HT1B) - C1-53 (E1) | L - BR | Heated oxygen sensor (bank 1 sensor 2) heater operation signal | Idling | Below 3.0 V |
| Ignition switch ON | 11 to 14 V | |||
| C1-51 (E01) - Body ground | W-B - - | Ground | Always | Below 1 Ω |
| C1-52 (HA1A) - C1-21 (E04) | B - W-B | Air fuel ratio sensor (bank 1 sensor 1) heater operation signal | Idling | Pulse generation (See waveform 7) |
| Ignition switch ON | 11 to 14 V | |||
| C1-53 (E1) - Body ground | BR - - | Ground | Always | Below 1 Ω |
| C1-55 (E1D2) - Body ground | B - - | Ground | Always | Below 1 Ω |
| C1-56 (E1D1) - Body ground | W - - | Ground | Always | Below 1 Ω |
| C1-64 (PTCR) - C1-53 (E1) | L - BR | Thermostat heater operation signal | Ignition switch ON | 11 to 14 V |
| C1-65 (PRG) - C1-53 (E1) | R - BR | Purge VSV operation signal | Ignition switch ON | 11 to 14 V |
| Idling | Pulse generation (See waveform 12) |
|||
| C1-66 (ACIS) - C1-53 (E1) | L - BR | No. 1 vacuum switching valve (for intake air control valve sub-assembly) operation signal | Ignition switch ON | 11 to 14 V |
| C1-69 (IGT5) - C1-53 (E1) | R - BR | No. 5 ignition coil assembly signal (ignition signal) | Idling with warm engine | Pulse generation (See waveform 8) |
| C1-70 (IGT3) - C1-53 (E1) | L - BR | No. 3 ignition coil assembly signal (ignition signal) | Idling with warm engine | Pulse generation (See waveform 8) |
| C1-71 (IGT1) - C1-53 (E1) | GR - BR | No. 1 ignition coil assembly signal (ignition signal) | Idling with warm engine | Pulse generation (See waveform 8) |
| C1-80 (IGF2) - C1-53 (E1) | LG - BR | Ignition coil assembly (ignition confirmation signal) | Ignition switch ON | 4.5 to 5.5 V |
| Idling with warm engine | Pulse generation (See waveform 8) |
|||
| C1-82 (KNK1) - C1-81 (EKNK) | B - W | Knock control sensor (bank 1) signal | Engine speed maintained at 4000 rpm after warming up engine | Pulse generation (See waveform 13) |
| C1-87 (PR) - C1-133 (ETHW) | P - BR | Fuel pressure sensor (for high pressure side) signal | Idling with warm engine | 0.5 to 4.5 V |
| C1-89 (VTA2) - C1-120 (ETA) | LG - B | Throttle position sensor signal (for sensor malfunction detection) | Ignition switch ON, accelerator pedal fully released | 2.1 to 3.1 V |
| Accelerator pedal fully depressed (engine running) | 4.6 to 5.0 V | |||
| C1-90 (VC) - C1-53 (E1) | W - BR | Power source for sensor (specific voltage) | Ignition switch ON | 4.5 to 5.5 V |
| C1-91 (OX2B) - C1-92 (EX2B) | G - W | Heated oxygen sensor (bank 2 sensor 2) signal | Engine speed maintained at 2500 rpm for 2 minutes after warming up engine | Pulse generation (See waveform 14) |
| C1-93 (OX1B) - C1-94 (EX1B) | R - G | Heated oxygen sensor (bank 1 sensor 2) signal | Engine speed maintained at 2500 rpm for 2 minutes after warming up engine | Pulse generation (See waveform 14) |
| C1-96 (VCNE) - C1-53 (E1) | R - BR | Power source of crankshaft position sensor (specific voltage) | Ignition switch ON | 4.5 to 5.5 V |
| C1-98 (VCV2) - C1-97 (VV2-) | R - B | Power source of VVT sensor (bank 2) (specific voltage) | Ignition switch ON | 4.5 to 5.5 V |
| C1-99 (VCV1) - C1-100 (VV1-) | W - R | Power source of VVT sensor (bank 1) (specific voltage) | Ignition switch ON | 4.5 to 5.5 V |
| C1-101 (THW) - C1-133 (ETHW) | B - BR | Engine coolant temperature sensor | Idling, engine coolant temperature 75 to 100°C (167 to 212°F) | 0.2 to 1.0 V |
| C1-102 (THA) - C1-115 (E2G) | L - LG | Intake air temperature sensor | Idling, intake air temperature 0 to 80°C (32 to 176°F) | 0.5 to 3.4 V |
| C1-105 (SNWI) - C1-53 (E1) | BE - BR | SNOW mode switch signal | Ignition switch ON | 11 to 14 V |
| Ignition switch ON, SNOW mode switch being pushed and held | Below 1.5 V | |||
| C1-106 (NSW) - C1-53 (E1) | G - BR | Park/Neutral position switch assembly signal | Ignition switch ON, shift lever not in P or N | 11 to 14 V |
| Ignition switch ON, shift lever in P or N | Below 1 V | |||
| C1-107 (R) - C1-53 (E1) | B - BR | R shift position switch signal | Ignition switch ON, shift lever in R | 11 to 14 V |
| Ignition switch ON, shift lever not in R | Below 1 V | |||
| C1-108 (P) - C1-53 (E1) | G - BR | P shift position switch signal | Ignition switch ON, shift lever in P | 11 to 14 V |
| Ignition switch ON, shift lever not in P | Below 1 V | |||
| C1-112 (IGF1) - C1-53 (E1) | B - BR | Ignition coil assembly (ignition confirmation signal) | Ignition switch ON | 4.5 to 5.5 V |
| Idling with warm engine | Pulse generation (See waveform 8) |
|||
| C1-114 (KNK2) - C1-113 (EKN2) | R - G | Knock control sensor (bank 2) signal | Engine speed maintained at 4000 rpm after warming up engine | Pulse generation (See waveform 13) |
| C1-116 (VG) - C1-115 (E2G) | R - LG | Mass air flow meter sub-assembly signal | Ignition switch ON | Pulse generation (See waveform 15) |
| C1-121 (VCTA) - C1-120 (ETA) | R - B | Power source of throttle position sensor (specific voltage) | Engine stopped, ignition switch ON | 4.5 to 5.5 V |
| C1-122 (VTA1) - C1-120 (ETA) | G - B | Throttle position sensor signal (for engine control) | Ignition switch ON, accelerator pedal fully released | 0.6 to 1.1 V |
| Accelerator pedal fully depressed (engine running) | 3.2 to 4.8 V | |||
| C1-123 (A2A+) - C1-53 (E1) | P - BR | Air fuel ratio sensor (bank 2 sensor 1) signal | Ignition switch ON | 3.3 V*2 |
| C1-124 (A2A-) - C1-53 (E1) | L - BR | Air fuel ratio sensor (bank 2 sensor 1) signal | Ignition switch ON | 2.9 V*2 |
| C1-125 (A1A+) - C1-53 (E1) | Y - BR | Air fuel ratio sensor (bank 1 sensor 1) signal | Ignition switch ON | 3.3 V*2 |
| C1-126 (A1A-) - C1-53 (E1) | BR - BR | Air fuel ratio sensor (bank 1 sensor 1) signal | Ignition switch ON | 2.9 V*2 |
| C1-127 (GE01) - Body ground | BR - - | Shielded earth (ground) circuit of throttle actuator | Always | Below 1 Ω |
| C1-128 (NE+) - C1-95 (NE-) | L - B | Crankshaft position sensor | Idling with warm engine | Pulse generation (See waveform 16) |
| C1-129 (VV2+) - C1-97 (VV2-) | G - B | VVT sensor (for intake camshaft of bank 2) signal | Idling | Pulse generation (See waveform 17) |
| C1-130 (EV2+) - C1-97 (VV2-) | GR - B | VVT sensor (for exhaust camshaft of bank 2) signal | Idling | Pulse generation (See waveform 18) |
| C1-131 (EV1+) - C1-100 (VV1-) | B - R | VVT sensor (for exhaust camshaft of bank 1) signal | Idling | Pulse generation (See waveform 18) |
| C1-132 (VV1+) - C1-100 (VV1-) | G - R | VVT sensor (for intake camshaft of bank 1) signal | Idling | Pulse generation (See waveform 17) |
| C1-134 (PFL) - C1-133 (ETHW) | R - BR | Fuel pressure sensor (for low pressure side) signal | Idling with warm engine | 0.75 to 4.5 V |
| C1-136 (RFC) - C1-53 (E1) | LG - BR | Cooling fan control signal | Ignition switch ON, A/C switch on (max cool) | Pulse generation (See waveform 19) |
| C1-139 (D) - C1-53 (E1) | R - BR | D shift position switch signal | Ignition switch ON, shift lever in D or M | 11 to 14 V |
| Ignition switch ON, shift lever not in D or M | Below 1 V | |||
| C1-140 (N) - C1-53 (E1) | W - BR | N shift position switch signal | Ignition switch ON, shift lever in N | 11 to 14 V |
| Ignition switch ON, shift lever not in N | Below 1 V |
*1: w/ Smart Entry and Start System.
*2: The ECM terminal voltage is constant regardless of the voltage output from the sensor.
-
WAVEFORM 1
*a 1 V/DIV. *b 10 μs./DIV. CAN Communication Signal (Reference) ECM Terminal Name Between CANH and E1 Tester Range 1 V/DIV., 10 μs./DIV. Condition Engine stopped, ignition switch ON Tech Tips
The waveform varies depending on the CAN communication signal.
-
WAVEFORM 2
*a 1 V/DIV. *b 10 μs./DIV. CAN Communication Signal (Reference) ECM Terminal Name Between CANL and E1 Tester Range 1 V/DIV., 10 μs./DIV. Condition Engine stopped, ignition switch ON Tech Tips
The waveform varies depending on the CAN communication signal.
-
WAVEFORM 3
*a 1 V/DIV. *b 2 ms./DIV. Engine Speed Signal ECM Terminal Name Between NEO and E1 Tester Range 1 V/DIV., 2 ms./DIV. Condition Idling with warm engine Tech Tips
The wavelength becomes shorter as the engine speed increases.
-
WAVEFORM 4
*a 2 V/DIV. *b 20 ms./DIV. Vehicle Speed Signal ECM Terminal Name Between SPD and E1 Tester Range 2 V/DIV., 20 ms./DIV. Condition Driving at 20 km/h (12 mph) Tech Tips
The wavelength becomes shorter as the vehicle speed increases.
-
WAVEFORM 5
*a 5 V/DIV. *b 1 ms./DIV. Cam Timing Oil Control Solenoid Assembly (for Exhaust Camshaft) Signal ECM Terminal Name Between OE1+ and OE1-
Between OE2+ and OE2-
Tester Range 5 V/DIV., 1 ms./DIV. Condition Idling -
WAVEFORM 6
*a 5 V/DIV. *b 1 ms./DIV. Cam Timing Oil Control Solenoid Assembly (for Intake Camshaft) Signal ECM Terminal Name Between OC1+ and OC1-
Between OC2+ and OC2-
Tester Range 5 V/DIV., 1 ms./DIV. Condition Idling -
WAVEFORM 7
*a 5 V/DIV. *b 10 ms./DIV. Air Fuel Ratio Sensor Heater Operation Signal ECM Terminal Name Between HA1A and E04
Between HA2A and E05
Tester Range 5 V/DIV., 10 ms./DIV. Condition Idling -
WAVEFORM 8
*a 2 V/DIV. *b 20 ms./DIV. Ignition Coil Assembly Signal (IGT and IGF Signal) ECM Terminal Name CH1: Between IGT (1 to 6) and E1
CH2: Between IGF (1 or 2) and E1
Tester Range 2 V/DIV., 20 ms./DIV. Condition Idling with warm engine -
WAVEFORM 9
*1 20 V/DIV. *2 20 ms./DIV. No. 1 (to No. 6) Fuel Injector Assembly (for Port Injection) Signal ECM Terminal Name Between #10 (to #60) and E01 Tester Range 20 V/DIV., 20 ms./DIV. Condition Idling with warm engine, Data List item "Injection Mode" displaying "Port" Tech Tips
-
The wavelength becomes shorter as the engine speed increases.
-
When the port injection injectors are operating, Port is displayed for Injection Way of the Data List.
-
-
WAVEFORM 10
*a 5 V/DIV. *b 1 ms./DIV. Throttle Actuator Negative Terminal Signal ECM Terminal Name Between M- and ME01 Tester Range 5 V/DIV., 1 ms./DIV. Condition Idling with warm engine Tech Tips
The duty ratio varies depending on the throttle actuator operation.
-
WAVEFORM 11
*a 5 V/DIV. *b 1 ms./DIV. Throttle Actuator Positive Terminal Signal ECM Terminal Name Between M+ and ME01 Tester Range 5 V/DIV., 1 ms./DIV. Condition Idling with warm engine Tech Tips
The duty ratio varies depending on the throttle actuator operation.
-
WAVEFORM 12
*1 10 V/DIV. *2 20 ms./DIV. Purge VSV Operation Signal ECM Terminal Name Between PRG and E1 Tester Range 10 V/DIV., 20 ms./DIV. Condition Idling Tech Tips
If the waveform is not similar to the illustration, check the waveform again after idling for 10 minutes or more.
-
WAVEFORM 13
*a 1 V/DIV. *b 1 ms./DIV. Knock Control Sensor Signal ECM Terminal Name Between KNK1 and EKNK
Between KNK2 and EKN2
Tester Range 1 V/DIV., 1 ms./DIV. Condition Engine speed maintained at 4000 rpm after warming up engine Tech Tips
-
The wavelength becomes shorter as the engine speed increases.
-
The waveforms and amplitudes displayed will differ slightly depending on the vehicle.
-
-
WAVEFORM 14
*1 0.2 V/DIV. *2 200 ms./DIV. Heated Oxygen Sensor Signal ECM Terminal Name Between OX1B and EX1B
Between OX2B and EX2B
Tester Range 0.2 V/DIV., 200 ms./DIV. Condition Engine speed maintained at 2500 rpm for 2 minutes after warming up engine Tech Tips
Data List, item "O2 Sensor Voltage B1S2" and "O2 Sensor Voltage B2S2" shows the ECM values from the heated oxygen sensor.
-
WAVEFORM 15
*a 1 V/DIV. *b 100 μs./DIV. Mass Air Flow Meter Sub-assembly Signal ECM Terminal Name Between VG and E2G Tester Range 1 V/DIV., 100 μs./DIV. Condition Ignition switch ON -
WAVEFORM 16
*a 2 V/DIV. *b 20 ms./DIV. Crankshaft Position Sensor Signal ECM Terminal Name Between NE+ and NE- Tester Range 2 V/DIV., 20 ms./DIV. Condition Idling with warm engine Tech Tips
The wavelength becomes shorter as the engine speed increases.
-
WAVEFORM 17
*a 5 V/DIV. *b 20 ms./DIV. VVT Sensor (for Intake Camshaft) Signal ECM Terminal Name CH1: Between VV1+ and VV1-
CH2: Between VV2+ and VV2-
Tester Range 5 V/DIV., 20 ms./DIV. Condition Idling Tech Tips
The wavelength becomes shorter as the engine speed increases.
-
WAVEFORM 18
*a 5 V/DIV. *b 20 ms./DIV. VVT Sensor (for Exhaust Camshaft) Signal ECM Terminal Name CH1: Between EV1+ and VV1-
CH2: Between EV2+ and VV2-
Tester Range 5 V/DIV., 20 ms./DIV. Condition Idling Tech Tips
The wavelength becomes shorter as the engine speed increases.
-
WAVEFORM 19
*a 1 V/DIV. *b 20 ms./DIV. Cooling Fan Control Signal ECM Terminal Name Between RFC and E1 Tester Range 1 V/DIV., 20 ms./DIV. Condition Ignition switch ON, A/C switch on (max cool) Tech Tips
The duty ratio varies depending on the engine coolant temperature.