The standard voltage, resistance and waveform between each pair of the ECM terminals are 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 |
|---|---|---|---|---|
| A1-2 (BATT) - E3-1 (E1) | B- W-B | Battery (for measuring battery voltage and for ECM memory) | Always | 11 to 14 V |
| E4-6 (+BM) - E3-1 (E1) | LG - W-B | Power source of throttle actuator | Always | 11 to 14 V |
| A1-7 (IGSW) - E3-1 (E1) | W - W-B | Ignition switch | Ignition switch ON | 11 to 14 V |
| A1-3 (+B) - E3-1 (E1) | B - W-B | Power source of ECM | Ignition switch ON | 11 to 14 V |
| A1-4 (+B2) - E3-1 (E1) | B - W-B | Power source of ECM | Ignition switch ON | 11 to 14 V |
| E2-2 (+BD1) - E3-1 (E1) | W - W-B | Power source of ECM (injector driver) | Engine stopped, ignition switch ON | 11 to 14 V |
| E2-1 (+BD2) - E3-1 (E1) | B - W-B | Power source of ECM (injector driver) | Engine stopped, ignition switch ON | 11 to 14 V |
| E2-13 (OC1+) - E2-12 (OC1-) | G - W | Cam timing oil control solenoid assembly (for intake camshaft of bank 1) operation signal | Idling | Pulse generation
(see waveform 1) |
| E2-11 (OC2+) - E2-10 (OC2-) | B - W | Cam timing oil control solenoid assembly (for intake camshaft of bank 2) operation signal | Idling | Pulse generation
(see waveform 1) |
| E3-17 (OE1+) - E3-16 (OE1-) | G - W | Cam timing oil control solenoid assembly (for exhaust camshaft of bank 1) operation signal | Idling | Pulse generation
(see waveform 2) |
| E3-15 (OE2+) - E3-14 (OE2-) | B - W | Cam timing oil control solenoid assembly (for exhaust camshaft of bank 2) operation signal | Idling | Pulse generation
(see waveform 2) |
| A1-25 (MREL) - E3-1 (E1) | BE - W-B | EFI MAIN relay operation signal | Ignition switch ON | 11 to 14 V |
| E2-30 (VCTA) - E2-29 (ETA) | L - W | Power source for throttle position sensor (specific voltage) | Ignition switch ON | 4.5 to 5.5 V |
| E2-23 (VC) - E3-1 (E1) | W - W-B | Power source for sensor (specific voltage) | Ignition switch ON | 4.5 to 5.5 V |
| E3-21 (VG) - E3-20 (E2G) | P - GR | Mass air flow meter sub-assembly signal | Ignition switch ON | Pulse generation
(see waveform 3) |
| E1-22 (THA) - E3-20 (E2G) | R - GR | Intake air temperature sensor | Idling, Intake air temperature 0 to 80°C (32 to 176°F) | 0.5 to 3.4 V |
| E1-24 (THW) - E1-23 (ETHW) | Y - BR | Engine coolant temperature sensor | Idling, Engine coolant temperature 75 to 100°C (167 to 212°F) | 0.2 to 1.0 V |
| E2-31 (VTA1) - E2-29 (ETA) | G - W | Throttle position sensor signal (for engine control) | Accelerator pedal fully released | 0.5 to 1.1 V |
| Accelerator pedal fully depressed | 3.2 to 4.8 V | |||
| E2-22 (VTA2) - E2-29 (ETA) | V - W | Throttle position sensor signal (for sensor malfunction detection) | Accelerator pedal fully released | 2.1 to 3.1 V |
| Accelerator pedal fully depressed | 4.6 to 5.0 V | |||
| N1-13 (NSW) - E3-1 (E1) | B - W-B | Park/Neutral position switch signal | Ignition switch off to ON, shift lever in P or N | Below 3.0 V |
| N1-14 (IREL) - E3-1 (E1) | V - W-B | INJ relay operation signal | Engine stopped, ignition switch ON | 0 to 1.5 V |
| A1-26 (VPA) - A1-27 (EPA) | Y - LG | 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 | |||
| A1-21 (VPA2) - A1-28 (EPA2) | GR - P | 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 | |||
| A1-19 (VCPA) - A1-27 (EPA) | V - LG | Power source of accelerator pedal position sensor (for VPA) | Ignition switch ON | 4.5 to 5.5 V |
| A1-29 (VCP2) - A1-28 (EPA2) | L - P | Power source of accelerator pedal position sensor (for VPA2) | Ignition switch ON | 4.5 to 5.5 V |
| E4-2 (HA1A) - N1-6 (E04) | L - W-B | Air fuel ratio sensor (bank 1 sensor 1) heater operation signal | Idling | Pulse generation
(see waveform 4) |
| Ignition switch ON | 11 to 14 V | |||
| E4-1 (HA2A) - N1-5 (E05) | L - W-B | Air fuel ratio sensor (bank 2 sensor 1) heater operation signal | Idling | Pulse generation
(see waveform 4) |
| Ignition switch ON | 11 to 14 V | |||
| E3-31 (A1A+) - E3-1 (E1) | B - W-B | Air fuel ratio sensor (bank 1 sensor 1) signal | Ignition switch ON | 3.3 V*1 |
| E3-23 (A2A+) - E3-1 (E1) | W - W-B | Air fuel ratio sensor (bank 2 sensor 1) signal | Ignition switch ON | 3.3 V*1 |
| E3-32 (A1A-) - E3-1 (E1) | W - W-B | Air fuel ratio sensor (bank 1 sensor 1) signal | Ignition switch ON | 2.9 V*1 |
| E3-30 (A2A-) - E3-1 (E1) | R - W-B | Air fuel ratio sensor (bank 2 sensor 1) signal | Ignition switch ON | 2.9 V*1 |
| N1-4 (HT1B) - E3-1 (E1) | R - W-B | Heated oxygen sensor (bank 1 sensor 2) heater operation signal | Idling | Below 3.0 V |
| Ignition switch ON | 11 to 14 V | |||
| N1-3 (HT2B) - E3-1 (E1) | P - W-B | Heated oxygen sensor (bank 2 sensor 2) heater operation signal | Idling | Below 3.0 V |
| Ignition switch ON | 11 to 14 V | |||
| E3-26 (OX1B) - E3-27 (EX1B) | W - R | 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 5) |
| E3-24 (OX2B) - E3-25 (EX2B) | B - 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 5) |
| E1-6 (#1D+) - E1-7 (#1D-) | R - G | No. 1 fuel injector assembly (for direct injection) signal | Idling with warm engine, Data List item "Injection Mode" displays "Direct" | Pulse generation |
| E1-1 (#2D+) - E1-2 (#2D-) | R - G | No. 2 fuel injector assembly (for direct injection) signal | Idling with warm engine, Data List item "Injection Mode" displays "Direct" | Pulse generation |
| E3-5 (#3D+) - E3-4 (#3D-) | L - P | No. 3 fuel injector assembly (for direct injection) signal | Idling with warm engine, Data List item "Injection Mode" displays "Direct" | Pulse generation |
| E1-5 (#4D+) - E1-4 (#4D-) | L - P | No. 4 fuel injector assembly (for direct injection) signal | Idling with warm engine, Data List item "Injection Mode" displays "Direct" | Pulse generation |
| E2-7 (#5D+) - E2-6 (#5D-) | W - B | No. 5 fuel injector assembly (for direct injection) signal | Idling with warm engine, Data List item "Injection Mode" displays "Direct" | Pulse generation |
| E3-3 (#6D+) - E3-2 (#6D-) | W - B | No. 6 fuel injector assembly (for direct injection) signal | Idling with warm engine, Data List item "Injection Mode" displays "Direct" | Pulse generation |
| E1-10 (#10) - E1-3 (E01) | W - W-B | No. 1 fuel injector assembly (for port injection) signal | Ignition switch ON | 0 to 5 V |
| Idling | Pulse generation
(see waveform 6) |
|||
| E2-19 (#20) - E1-3 (E01) | W - W-B | No. 2 fuel injector assembly (for port injection) signal | Ignition switch ON | 0 to 5 V |
| Idling | Pulse generation
(see waveform 6) |
|||
| E1-9 (#30) - E1-3 (E01) | GR - W-B | No. 3 fuel injector assembly (for port injection) signal | Ignition switch ON | 0 to 5 V |
| Idling | Pulse generation
(see waveform 6) |
|||
| E2-18 (#40) - E1-3 (E01) | G - W-B | No. 4 fuel injector assembly (for port injection) signal | Ignition switch ON | 0 to 5 V |
| Idling | Pulse generation
(see waveform 6) |
|||
| E1-8 (#50) - E1-3 (E01) | Y - W-B | No. 5 fuel injector assembly (for port injection) signal | Ignition switch ON | 0 to 5 V |
| Idling | Pulse generation
(see waveform 6) |
|||
| E2-17 (#60) - E1-3 (E01) | L - W-B | No. 6 fuel injector assembly (for port injection) signal | Ignition switch ON | 0 to 5 V |
| Idling | Pulse generation
(see waveform 6) |
|||
| E3-19 (KNK1) - E3-29 (EKNK) | B - W | Knock control sensor (bank 1) signal | Engine speed maintained at 4000 rpm after warming up engine | Pulse generation
(see waveform 7) |
| E3-18 (KNK2) - E3-28 (EKN2) | G - R | Knock control sensor (bank 2) signal | Engine speed maintained at 4000 rpm after warming up engine | Pulse generation
(see waveform 7) |
| E1-26 (VCNE) - E3-1 (E1) | B - W-B | Power source of crankshaft position sensor (specific voltage) | Ignition switch ON | 4.5 to 5.5 V |
| E1-20 (VCV1) - E1-21 (VV1-) | GR - P | Power source of VVT sensor (bank 1) (specific voltage) | Ignition switch ON | 4.5 to 5.5 V |
| E1-18 (VCV2) - E1-28 (VV2-) | R - LG | Power source of VVT sensor (bank 2) (specific voltage) | Ignition switch ON | 4.5 to 5.5 V |
| E1-25 (NE+) - E1-33 (NE-) | V - W | Crankshaft position sensor | Idling | Pulse generation
(see waveform 8) |
| E1-31 (VV1+) - E1-21 (VV1-) | LG - P | VVT sensor (for intake camshaft of bank 1) signal | Idling | Pulse generation
(see waveform 9) |
| E1-19 (VV2+) - E1-28 (VV2-) | G - LG | VVT sensor (for intake camshaft of bank 2) signal | Idling | Pulse generation
(see waveform 9) |
| E1-30 (EV1+) - E1-21 (VV1-) | V - P | VVT sensor (for exhaust camshaft of bank 1) signal | Idling | Pulse generation
(see waveform 10) |
| E1-29 (EV2+) - E1-28 (VV2-) | L - LG | VVT sensor (for exhaust camshaft of bank 2) signal | Idling | Pulse generation
(see waveform 10) |
| E1-17 (IGT1) - E3-1 (E1) | R - W-B | No. 1 ignition coil assembly (ignition signal) | Idling | Pulse generation
(see waveform 11) |
| E2-16 (IGT2) - E3-1 (E1) | W - W-B | No. 2 ignition coil assembly (ignition signal) | Idling | Pulse generation
(see waveform 11) |
| E1-16 (IGT3) - E3-1 (E1) | GR - W-B | No. 3 ignition coil assembly (ignition signal) | Idling | Pulse generation
(see waveform 11) |
| E2-15 (IGT4) - E3-1 (E1) | G - W-B | No. 4 ignition coil assembly (ignition signal) | Idling | Pulse generation
(see waveform 11) |
| E1-15 (IGT5) - E3-1 (E1) | Y - W-B | No. 5 ignition coil assembly (ignition signal) | Idling | Pulse generation
(see waveform 11) |
| E2-14 (IGT6) - E3-1 (E1) | L - W-B | No. 6 ignition coil assembly (ignition signal) | Idling | Pulse generation
(see waveform 11) |
| E1-14 (IGF1) - E3-1 (E1) | W - W-B | Ignition coil assembly (ignition confirmation signal) | Ignition switch ON | 4.5 to 5.5 V |
| Idling | Pulse generation
(see waveform 11) |
|||
| E2-24 (IGF2) - E3-1 (E1) | V - W-B | Ignition coil (ignition confirmation signal) | Ignition switch ON | 4.5 to 5.5 V |
| Idling | Pulse generation
(see waveform 11) |
|||
| E4-23 (PRG) - E3-1 (E1) | Y - W-B | Purge VSV for EVAP system operation signal | Ignition switch ON | 11 to 14 V |
| Idling | Pulse generation
(see waveform 12) |
|||
| E2-27 (PSP) - E3-1 (E1) | B - W-B | Power steering oil pressure sensor signal | Ignition switch ON | 0.5 to 4.5 V |
| E4-22 (PTCR) - E3-1 (E1) | GR - W-B | Thermostat heater operation signal | Ignition switch ON | 11 to 14 V |
| N1-24 (SPD) - E3-1 (E1) | P - W-B | Vehicle speed signal from combination meter assembly | Driving at 20 km/h (12 mph) | Pulse generation
(see waveform 13) |
| N1-12 (STA) - E3-1 (E1) | GR - W-B | Starter signal | Cranking | 6.0 V or higher |
| N1-16 (STP) - E3-1 (E1) | W - W-B | Stop light switch assembly signal | Brake pedal depressed | 7.5 to 14 V |
| Brake pedal released | Below 1.5 V | |||
| N1-15 (ST1-) - E3-1 (E1) | B - W-B | Stop light switch assembly signal (opposite to STP terminal) | Ignition switch ON, Brake pedal depressed | Below 1.5 V |
| Ignition switch ON, Brake pedal released | 7.5 to 14 V | |||
| E4-4 (M+) - E3-1 (E1) | P - W-B | Throttle actuator operation signal (positive terminal) | Idling with warm engine | Pulse generation
(see waveform 14) |
| E4-5 (M-) - E3-1 (E1) | L - W-B | Throttle actuator operation signal (negative signal) | Idling with warm engine | Pulse generation
(see waveform 15) |
| N1-2 (ASM+) - N1-1 (ASM-) | P - L | Intake air control valve actuator | Warm engine and 3000 rpm | Pulse generation
(see waveform 16) |
| N1-9 (FPC) - E3-1 (E1) | L - W-B | Fuel pump control | Engine stopped, ignition switch ON | Below 1.5 V |
| E2-4 (FP1+) - E2-5 (FP1-) | B - W | Fuel pump (for high pressure side) signal | Idling with warm engine | Pulse generation |
| E2-20 (PR) - E1-23 (ETHW) | L - BR | Fuel pressure sensor (for high pressure side) signal | Idling with warm engine | 0.5 to 4.5 V |
| E2-28 (PFL) - E1-23 (ETHW) | GR - BR | Fuel pressure sensor (for low pressure side) signal | Idling with warm engine | 0.75 to 4.5 V |
| N1-27 (CANH) - E3-1 (E1) | G - W-B | CAN communication line | Ignition switch ON | Pulse generation
(see waveform 17) |
| N1-35 (CANL) - E3-1 (E1) | W - W-B | CAN communication line | Ignition switch ON | Pulse generation
(see waveform 18) |
| A1-15 (NEO) - E3-1 (E1)*5 | W - W-B | Engine speed signal sent to other ECUs | Idling with warm engine | Pulse generation
(see waveform 20) |
| N1-31 (KSW) - E3-1 (E1) | W - W-B | Key signal | Key outside vehicle*5 | 11 to 14 V |
| Key outside key cylinder*6 | 11 to 14 V | |||
| E4-17 (R) - E3-1 (E1) | L - W-B | 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 | |||
| E4-27 (D) - E3-1 (E1)*2 | L - W-B | D shift position switch signal | Ignition switch ON, shift lever in D or S | 11 to 14 V |
| Ignition switch ON, shift lever not in D or S | Below 1 V | |||
| E4-27 (D) - E3-1 (E1)*3 | P - W-B | Clutch switch signal | Ignition switch ON, clutch pedal depressed | 11 to 14 V |
| Ignition switch ON, clutch pedal released | Below 1 V | |||
| E4-28 (N) - E3-1 (E1)*2 | G - W-B | 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 | |||
| E4-18 (P) - E3-1 (E1)*2 | V - W-B | 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 | |||
| N1-32 (S) - E3-1 (E1)*2 | R - W-B | S shift position switch signal | Ignition switch ON, shift lever in S | 11 to 14 V |
| Ignition switch ON, shift lever not in S | Below 1 V | |||
| E4-16 (GE01) - Body ground | - - Body ground | Shielded ground circuit of throttle actuator | Always | Below 1 Ω |
| E4-3 (ME01) - Body ground | W-B - Body ground | Ground circuit of ECM | Always | Below 1 Ω |
| A1-18 (EC) - Body ground | W-B - Body ground | Ground circuit of ECM | Always | Below 1 Ω |
| E3-1 (E1) - Body ground | W-B - Body ground | Ground circuit of ECM | Always | Below 1 Ω |
| E1-3 (E01) - Body ground | W-B - Body ground | Ground circuit of ECM | Always | Below 1 Ω |
| E2-3 (E02) - Body ground | W-B - Body ground | Ground circuit of ECM | Always | Below 1 Ω |
| N1-6 (E04) - Body ground | W-B - Body ground | Ground circuit of ECM | Always | Below 1 Ω |
| N1-5 (E05) - Body ground | W-B - Body ground | Ground circuit of ECM | Always | Below 1 Ω |
| E3-7 (E1D1) - Body ground | W - Body ground | Ground circuit of ECM | Always | Below 1 Ω |
| E3-6 (E1D2) - Body ground | B - Body ground | Ground circuit of ECM | Always | Below 1 Ω |
| A1-23 (VCAI) - E3-1 (E1)*4 | G - W-B | Power source of pressure sensor (specific voltage) | Ignition switch ON | 4.5 to 5.5 V |
| A1-14 (AIRV) - E3-1 (E1)*4 | G - W-B | Emission control valve set (for bank 1) for secondary air injection system | Ignition switch ON | 11 to 14 V |
| E1-13 (AIRP) - E3-1 (E1)*4 | P - W-B | Air pump control | Ignition switch ON | 11 to 14 V |
| N1-19 (AIDI) - E3-1 (E1)*4 | W - BR | Diagnostic information signal for secondary air injection system | Secondary air injection system operating | Pulse generation
(See waveform 19) |
| A1-6 (AIR1) - E3-1 (E1)*4 | SB - W-B | Emission control valve set (for bank 2) for secondary air injection system | Ignition switch ON | 11 to 14 V |
| A1-24 (AIP) - A1-22 (EAIP)*4 | BE - L | Secondary air injection system pressure (for bank 1) signal | Ignition switch ON | 3.0 to 3.6 V |
| A1-30 (AIP2) - A1-22 (EAIP)*4 | SB - L | Secondary air injection system pressure (for bank 2) signal | Ignition switch ON | 3.0 to 3.6 V |
*1: The ECM terminal voltage is constant regardless of the voltage output from the sensor.
*2: for Automatic Transmission Models
*3: for Manual Transmission Models
*4: w/ Secondary Air Injection System
*5: w/ Entry and Start System
*6: w/o Entry and Start System
WAVEFORM 1
| ECM Terminal Name | Between OC1+ and OC1- or OC2+ and OC2- |
| Tester Range | 5 V/DIV., 1 ms./DIV. |
| Condition | Idling |
WAVEFORM 2
| ECM Terminal Name | Between OE1+ and OE1- or OE2+ and OE2- |
| Tester Range | 5 V/DIV., 1 ms./DIV. |
| Condition | Idling |
WAVEFORM 3
| ECM Terminal Name | Between VG and E2G |
| Tester Range | 1 V/DIV., 100 μs./DIV. |
| Condition | Ignition switch ON |
WAVEFORM 4
| ECM Terminal Name | Between HA1A and E04 or HA2A and E05 |
| Tester Range | 5 V/DIV, 10 ms./DIV |
| Condition | Idling |
The wavelength varies in accordance with the engine operating condition.
WAVEFORM 5
| ECM Terminal Name | Between OX1B and EX1B or 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 |
In Data List, item O2 Sensor Voltage B1S2 and O2 Sensor Voltage B2S2 shows the ECM input values from the heated oxygen sensor.
WAVEFORM 6
| ECM Terminal Name | Between #10 (to #60) and E01 |
| Tester Range | 20 V/DIV., 20 ms./DIV. |
| Condition | Idling |
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 7
| 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 |
The wavelength becomes shorter as the engine speed increases.
The waveforms and amplitudes displayed differ slightly depending on the vehicle.
WAVEFORM 8
| ECM Terminal Name | Between NE+ and NE- |
| Tester Range | 2 V/DIV., 20 ms./DIV. |
| Condition | Idling |
The wavelength becomes shorter as the engine speed increases.
WAVEFORM 9
| ECM Terminal Name | CH1: Between VV1+ and VV1-
CH2: Between VV2+ and VV1- |
| Tester Range | 5 V/DIV., 20 ms./DIV. |
| Condition | Idling |
The wavelength becomes shorter as the engine speed increases.
WAVEFORM 10
| ECM Terminal Name | CH1: Between EV1+ and EV1-
CH1: Between EV2+ and EV1- |
| Tester Range | 5 V/DIV., 20 ms./DIV. |
| Condition | Idling |
The wavelength becomes shorter as the engine speed increases.
WAVEFORM 11
| 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 |
The wavelength becomes shorter as the engine speed increases.
WAVEFORM 12
| ECM Terminal Name | Between PRG and E1 |
| Tester Range | 10 V/DIV., 20 ms./DIV. |
| Condition | Idling |
If the waveform is not similar to the illustration, check the waveform again after idling for 10 minutes or more.
WAVEFORM 13
| ECM Terminal Name | Between SPD and E1 |
| Tester Range | 2 V/DIV., 20 ms./DIV. |
| Condition | Driving at 20 km/h (12 mph) |
The wavelength becomes shorter as the vehicle speed increases.
WAVEFORM 14
| ECM Terminal Name | Between M+ and ME01 |
| Tester Range | 5 V/DIV., 1 ms./DIV. |
| Condition | Idling with warm engine |
The duty ratio varies depending on the throttle actuator operation.
WAVEFORM 15
| ECM Terminal Name | Between M- and ME01 |
| Tester Range | 5 V/DIV., 1 ms./DIV. |
| Condition | Idling with warm engine |
The duty ratio varies depending on the throttle actuator operation.
WAVEFORM 16
| ECM Terminal Name | Between ASM+ and ASM- |
| Tester Range | 5 V/DIV., 5 ms./DIV. |
| Condition | Warm engine and 3000 rpm |
WAVEFORM 17
| ECM Terminal Name | Between CANH and E1 |
| Tester Range | 1 V/DIV., 10 μs./DIV. |
| Condition | Ignition switch ON |
The waveform varies depending on the CAN communication signal.
WAVEFORM 18
| ECM Terminal Name | Between CANL and E1 |
| Tester Range | 1 V/DIV., 10 μs./DIV. |
| Condition | Ignition switch ON |
The waveform varies depending on the CAN communication signal.
WAVEFORM 19
| ECM Terminal Name | Between AIDI and E1 |
| Tester Range | 5 V/DIV, 50 msec./DIV |
| Condition | Secondary air injection system operating |
The wavelength changes when the air injection control driver detects malfunctions in the secondary air injection system (Click hereEngine / Hybrid System>7GR-FKS (ENGINE CONTROL)>SFI SYSTEM>P161311201902,999999,_51,_078720,_0381907,RM100000001G9V7,P161311)
WAVEFORM 20
| ECM Terminal Name | Between NEO and E1 |
| Tester Range | 1 V/DIV., 2 ms./DIV. |
| Condition | Idling with warm engine |
The wavelength becomes shorter as the engine speed increases.