ECM
| *A | for RHD | *B | for LHD |
Tech Tips
The standard voltage and resistance of each ECM terminal is shown in the table below.
In the table, first follow the information under "Condition". Look under "Terminal No. (Symbol) " for the terminals to be inspected. The standard voltage and resistance between the terminals is shown under "Specific Condition".
Use the illustration above as a reference for the ECM terminals.
| Terminals No. (Symbol) | Wiring Color | Terminal Description | Condition | Specified Condition |
|---|---|---|---|---|
| A58-1 (BATT) - B23-16 (E1) | Y - W-B | Battery (for measuring battery voltage and for ECM memory) | Always | 11 to 14 V |
| A58-2 (+B) - B23-16 (E1) | B - W-B | Power source of ECM | Ignition switch ON | 11 to 14 V |
| A58-3 (+B2) - B23-16 (E1) | B - W-B | Power source of ECM | Ignition switch ON | 11 to 14 V |
| A58-13 (CANH) - B23-16 (E1) | L - W-B | CAN communication line | Ignition switch ON | Pulse generation (See waveform 1) |
| A58-22 (STA) - B23-16 (E1) | BR - W-B | Starter signal | Cranking | 5.5 V or higher |
| A58-26 (CANL) - B23-16 (E1) | W - W-B | CAN communication line | Ignition switch ON | Pulse generation (See waveform 2) |
| A58-41 (S) - B23-16 (E1) | V - W-B | M position switch signal | Ignition switch ON and shift lever in M | 11 to 14 V |
| Ignition switch ON and shift lever not in M | Below 1 V | |||
| A58-42 (SFTU) - B23-16 (E1) | GR - W-B | Up-shift position switch signal | Ignition switch ON and shift lever in M | 11 to 14 V |
|
Below 1 V | |||
| A58-43 (SFTD) - B23-16 (E1) | P - W-B | Down-shift position switch signal | Ignition switch ON and shift lever in M | 11 to 14 V |
|
Below 1 V | |||
| A58-46 (MREL) - B23-16 (E1) | GR - W-B | EFI MAIN relay | Ignition switch ON | 11 to 14 V |
| A58-57 (PWMS) - B23-16 (E1) | L - W-B | Pattern select switch (SPORT) signal | Ignition switch ON and pattern select switch (SPORT) off | 11 to 14 V |
| Ignition switch ON and pattern select switch (SPORT) on | Below 1.5 V | |||
| B23-16 (E1) - Body ground | W-B | Ground | Always | Below 1 Ω |
| B23-29 (+BM) - B23-16 (E1) | GR - W-B | Power source of throttle actuator | Always | 11 to 14 V |
| B23-47 (SLU-) - B23-48 (SLU+) | R - V | Shift solenoid valve SLU signal | Lock-up turned from off to on | Pulse generation (See waveform 3) |
| B23-63 (NSW) - B23-16 (E1) | BE - W-B | Park/neutral position switch signal | Ignition switch ON and shift lever in P or N | Below 1 Ω |
| Ignition switch ON and shift lever not in P or N | 11 to 14 V | |||
| B23-66 (SLT-) - B23-67 (SLT+) | L - P | Shift solenoid valve SLT signal | Engine idling | Pulse generation (See waveform 4) |
| B23-69 (DS2) - B23-16 (E1) | R - W-B | Shift solenoid valve DS2 signal | Accelerator pedal depressed further after driving at constant vehicle speed with shift lever in D | Pulse generation (See waveform 5) |
| B23-70 (DS1) - B23-16 (E1) | W - W-B | P shift position switch signal | Ignition switch ON and shift lever P position | Pulse generation (See waveform 6) |
| B23-72 (SLS-) - B23-73 (SLS+) | BE - V | Shift solenoid valve SLS signal | Engine idling | Pulse generation (See waveform 7) |
| B23-79 (R) - B23-16 (E1) | R - W-B | R position switch signal | Ignition switch ON and shift lever in R | 11 to 14 V |
| Ignition switch ON and shift lever not in R | Below 1 Ω | |||
| B23-81 (D) - B23-16 (E1) | L - W-B | D position switch signal | Ignition switch ON and shift lever in D | 11 to 14 V |
| Ignition switch ON and shift lever not in D | Below 1 V | |||
| B23-89 (PTO) - B23-121 (EPTO) | L - BE | Oil pressure sensor signal | Engine idling speed and shift lever in P | 0.8 to 1.2 V |
| B23-95 (THO1) - B23-96 (ETHO) | Y - B | CVT fluid temperature sensor signal | CVT fluid temperature: 60 to 120°C (140 to 248°F) | 0.2 to 1.0 V |
| B23-97 (N) - B23-16 (E1) | V - W-B | N position switch signal | Ignition switch ON and shift lever in N | 11 to 14 V |
| Ignition switch ON and shift lever not in N | Below 1 V | |||
| B23-98 (B) - B23-16 (E1) | LG - W-B | B position switch signal | Ignition switch ON and shift lever in B | 11 to 14 V |
| Ignition switch ON and shift lever not in B | Below 1 V | |||
| B23-99 (P) - B23-16 (E1) | P - W-B | P position switch signal | Ignition switch ON and shift lever in P | 11 to 14 V |
| Ignition switch ON and shift lever not in P | Below 1 V | |||
| B23-120 (VCPT) - B23-121 (EPTO) | V - BE | Power supply for oil pressure sensor signal | Ignition switch ON | 4.5 to 5.5 V |
| B23-125 (NTO) - B23-126 (NTB) | G - B | Transmission revolution sensor (NT) signal | When driving with shift lever in D, vehicle speed approx. 12 km/h (7.5 mph) and engine speed approx. 1000 rpm | Pulse generation (See waveform 8) |
| B23-127 (NIN+) - B23-128 (NIN-) | LG - Y | Transmission revolution sensor (NIN) signal | When driving with shift lever in D, vehicle speed approx. 6 km/h (3.7 mph) and engine speed approx. 760 rpm | Pulse generation (See waveform 9) |
| B23-129 (NOTO) - B23-130 (NOTB) | BE - W | Transmission revolution sensor (NOUT) signal | When driving with shift lever in D, vehicle speed approx. 12 km/h (7.5 mph) and engine speed approx. 1000 rpm | Pulse generation (See waveform 10) |
| Terminals No. (Symbol) | Wiring Color | Terminal Description | Condition | Specified Condition |
|---|---|---|---|---|
| A58-1 (BATT) - B22-16 (E1) | Y - W-B | Battery (for measuring battery voltage and for ECM memory) | Always | 11 to 14 V |
| A58-2 (+B) - B22-16 (E1) | B - W-B | Power source of ECM | Ignition switch ON | 11 to 14 V |
| A58-3 (+B2) - B22-16 (E1) | B - W-B | Power source of ECM | Ignition switch ON | 11 to 14 V |
| A58-13 (CANH) - B22-16 (E1) | L - W-B | CAN communication line | Ignition switch ON | Pulse generation (See waveform 1) |
| A58-22 (STA) - B22-16 (E1) | BR - W-B | Starter signal | Cranking | 5.5 V or higher |
| A58-26 (CANL) - B22-16 (E1) | W - W-B | CAN communication line | Ignition switch ON | Pulse generation (See waveform 2) |
| A58-41 (S) - B22-16 (E1) | V - W-B | M position switch signal | Ignition switch ON and shift lever in M | 11 to 14 V |
| Ignition switch ON and shift lever not in M | Below 1 V | |||
| A58-42 (SFTU - B22-16 (E1) | GR - W-B | Up-shift position switch signal | Ignition switch ON and shift lever in M | 11 to 14 V |
|
Below 1 V | |||
| A58-43 (SFTD) - B22-16 (E1) | P - W-B | Down-shift position switch signal | Ignition switch ON and shift lever in M | 11 to 14 V |
|
Below 1 V | |||
| A58-46 (MREL) - B22-16 (E1) | GR - W-B | EFI MAIN relay | Ignition switch ON | 11 to 14 V |
| A58-57 (PWMS) - B22-16 (E1) | L - W-B | Pattern select switch (SPORT) signal | Ignition switch ON and pattern select switch (SPORT) off | 11 to 14 V |
| Ignition switch ON and pattern select switch (SPORT) on | Below 1.5 V | |||
| B22-16 (E1) - Body ground | W-B | Ground | Always | Below 1 Ω |
| B22-29 (+BM) - B22-16 (E1) | GR - W-B | Power source of throttle actuator | Always | 11 to 14 V |
| B22-47 (SLU-) - B22-48 (SLU+) | R - V | Shift solenoid valve SLU signal | Lock-up turned from off to on | Pulse generation (See waveform ?) |
| B22-63 (NSW) - B22-16 (E1) | BE - W-B | Park/neutral position switch signal | Ignition switch ON and shift lever in P or N | Below 1 Ω |
| Ignition switch ON and shift lever not in P or N | 11 to 14 V | |||
| B22-66 (SLT-) - B22-67 (SLT+) | L - P | Shift solenoid valve SLT signal | Engine idling | Pulse generation (See waveform 3) |
| B22-69 (DS2) - B22-16 (E1) | R - W-B | Shift solenoid valve DS2 signal | Accelerator pedal depressed further after driving at constant vehicle speed with shift lever in D | Pulse generation (See waveform 4) |
| B22-70 (DS1) - B22-16 (E1) | W - W-B | P shift position switch signal | Ignition switch ON and shift lever P position | Pulse generation (See waveform 5) |
| B22-72 (SLS-) - B22-73 (SLS+) | BE - V | Shift solenoid valve SLS signal | Engine idling | Pulse generation (See waveform 6) |
| B22-79 (R) - B22-16 (E1) | R - W-B | R position switch signal | Ignition switch ON and shift lever in R | 11 to 14 V |
| Ignition switch ON and shift lever not in R | Below 1 Ω | |||
| B22-81 (D) - B22-16 (E1) | L - W-B | D position switch signal | Ignition switch ON and shift lever in D | 11 to 14 V |
| Ignition switch ON and shift lever not in D | Below 1 V | |||
| B22-89 (PTO) - B22-121 (EPTO) | L - BE | Oil pressure sensor signal | Engine idling speed and shift lever in P | 0.8 to 1.2 V |
| B22-95 (THO1) - B22-96 (ETHO) | Y - B | CVT fluid temperature sensor signal | CVT fluid temperature: 60 to 120°C (140 to 248°F) | 0.2 to 1.0 V |
| B22-97 (N) - B22-16 (E1) | V - W-B | N position switch signal | Ignition switch ON and shift lever in N | 11 to 14 V |
| Ignition switch ON and shift lever not in N | Below 1 V | |||
| B22-98 (B) - B22-16 (E1) | LG - W-B | B position switch signal | Ignition switch ON and shift lever in B | 11 to 14 V |
| Ignition switch ON and shift lever not in B | Below 1 V | |||
| B22-99 (P) - B22-16 (E1) | P - W-B | P position switch signal | Ignition switch ON and shift lever in P | 11 to 14 V |
| Ignition switch ON and shift lever not in P | Below 1 V | |||
| B22-120 (VCPT) - B22-121 (EPTO) | V - BE | Power supply for oil pressure sensor signal | Ignition switch ON | 4.5 to 5.5 V |
| B22-125 (NTO) - B22-126 (NTB) | G - B | Transmission revolution sensor (NT) signal | When driving with shift lever in D, vehicle speed approx. 12 km/h (7.5 mph) and engine speed approx. 1000 rpm | Pulse generation (See waveform 7) |
| B22-127 (NIN+) - B22-128 (NIN-) | LG - Y | Transmission revolution sensor (NIN) signal | When driving with shift lever in D, vehicle speed approx. 6 km/h (3.7 mph) and engine speed approx. 760 rpm | Pulse generation (See waveform 8) |
| B22-129 (NOTO) - B22-130 (NOTB) | BE - W | Transmission revolution sensor (NOUT) signal | When driving with shift lever in D, vehicle speed approx. 12 km/h (7.5 mph) and engine speed approx. 1000 rpm | Pulse generation (See waveform 9) |
Waveform 1 (Reference)
| Terminal | CANH - E1 |
| Tool setting | 1 V/DIV, 10 μs/DIV |
| Vehicle conditions | Ignition switch ON |
Waveform 2 (Reference)
| Terminal | CANL - E1 |
| Tool setting | 1 V/DIV, 10 μs/DIV |
| Vehicle conditions | Ignition switch ON |
Waveform 3
| Terminal | SLU+ - SLU- |
| Tool setting | 5 V/DIV, 1 ms/DIV |
| Vehicle conditions | Lock-up turned from off to on |
Waveform 4
| Terminal | SLT+ - SLT- |
| Tool setting | 5 V/DIV, 1 ms/DIV |
| Vehicle conditions | Engine idling speed |
Waveform 5
| Terminal | DS2 - E1 |
| Tool setting | 10 V/DIV, 5 ms/DIV |
| Vehicle conditions | Accelerator pedal further depressed after driving at a constant vehicle speed with shift lever in D |
Tech Tips
Duty ratio increases with downshifts.
Waveform 6
| Terminal | DS1 - E1 |
| Tool setting | 10 V/DIV, 5 ms/DIV |
| Vehicle conditions | Accelerator pedal released while driving with shift lever in D |
Tech Tips
Duty ratio increases with upshifts.
Waveform 7
| Terminal | SLS+ - SLS- |
| Tool setting | 5 V/DIV, 1 ms/DIV |
| Vehicle conditions | Engine idling speed |
Waveform 8
| Terminal | NTO - NTB |
| Tool setting | 1 V/DIV, 2 ms/DIV |
| Vehicle conditions | When driving with shift lever in D, vehicle speed approx. 12 km/h (7.5 mph) and engine speed approx. 1000 rpm |
Tech Tips
The wavelength shortens as the turbine speed increases.
Waveform 9
| Terminal | NIN+ - NIN- |
| Tool setting | 1 V/DIV, 2 ms/DIV |
| Vehicle conditions | When driving with shift lever in D, vehicle speed approx. 6 km/h (3.7 mph) and engine speed approx. 760 rpm |
Tech Tips
The wavelength shortens and the voltage increases as the primary pulley speed increases.
Waveform 10
| Terminal | NOTO - NOTB |
| Tool setting | 1 V/DIV, 2 ms/DIV |
| Vehicle conditions | When driving with shift lever in D, vehicle speed approx. 12 km/h (7.5 mph) and engine speed approx. 1000 rpm |
Tech Tips
The wavelength shortens as the secondary pulley speed increases.