ECM
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 or resistance between the terminals is shown under "Specified Condition".
Use the illustration above as a reference for the ECM terminals.
| Terminal No. (Symbol) | Wiring Color | Terminal Description | Condition | Specified Condition |
|---|---|---|---|---|
| A62-2 (+B) - B75-16 (E1) | R - BR | Power source of ECM | Ignition switch ON | 11 to 14 V |
| A62-3 (+B2) - B75-16 (E1) | P - BR | Power source of ECM | Ignition switch ON | 11 to 14 V |
| B75-29 (+BM) - B75-16 (E1) | L - BR | Power source of throttle actuator | Always | 11 to 14 V |
| A62-1 (BATT) - B75-16 (E1) | W - BR | Battery (for measuring battery voltage and for ECM memory) | Always | 11 to 14 V |
| A62-46 (MREL) - B75-16 (E1) | P - BR | EFI-MAIN No. 1 relay | Ignition switch ON | 11 to 14 V |
| A62-9 (STP) - B75-16 (E1) | L - BR | Stop light switch signal | Brake pedal depressed | 11 to 14 V |
| Brake pedal released | Below 1.5 V | |||
| A62-22 (STA) - B75-16 (E1) | SB - BR | Starter signal | Cranking | 5.5 V or higher |
| A62-13 (CANH) - B75-16 (E1) | Y - BR | CAN communication line | Ignition switch ON | Pulse generation |
| A62-26 (CANL) - B75-16 (E1) | W - BR | CAN communication line | Ignition switch ON | Pulse generation |
| A62-42 (SFTU) - B75-16 (E1) | LG - BR | Up-shift position switch signal | Ignition switch ON and shift lever in M | 11 to 14 V |
| Ignition switch ON and shift lever in "+" (up-shift) | Below 1 V | |||
| A62-43 (SFTD) - B75-16 (E1) | Y - BR | Down-shift position switch signal | Ignition switch ON and shift lever in M | 11 to 14 V |
| Ignition switch ON and shift lever in "-" (down-shift) | Below 1 V | |||
| A62-41 (S) - B75-16 (E1) | L - BR | 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 | |||
| A62-57 (PWMS) - B75-16 (E1) | GR - BR | Combination switch (SPORT) signal | Ignition switch ON and combination switch (SPORT) off | 11 to 14 V |
| Ignition switch ON and combination switch (SPORT) on | Below 1.5 V | |||
| B75-63 (NSW) - B75-16 (E1) | W - BR | Park/neutral position switch signal | Ignition switch ON and shift lever in P or N | Below 2 V |
| Ignition switch ON and shift lever not in P or N | 11 to 14 V | |||
| B75-99 (P) - B75-16 (E1) | L - BR | 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 | |||
| B75-79 (R) - B75-16 (E1) | R - BR | 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 V | |||
| B75-97 (N) - B75-16 (E1) | Y - BR | 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 | |||
| B75-81 (D) - B75-16 (E1) | B - BR | D position switch signal | Ignition switch ON and shift lever in D or M | 11 to 14 V |
| Ignition switch ON and shift lever not in D or M | Below 1 V | |||
| B75-73 (SLS+) - B75-72 (SLS-) | Y - L | Shift solenoid valve SLS signal | Engine idling | Pulse generation |
| B75-68 (SL) - B75-16 (E1) | L - BR | Shift solenoid valve SL signal | Ignition switch ON and shift lever in N | 11 to 14 V |
| B75-70 (DS1) - B75-16 (E1) | W - BR | Shift solenoid valve DS1 signal | Accelerator pedal released while driving with shift lever in D | Pulse generation |
| B75-69 (DS2) - B75-16 (E1) | G - BR | Shift solenoid valve DS2 signal | Accelerator pedal depressed further after driving at constant vehicle speed with shift lever in D | Pulse generation |
| B75-71 (DSU) - B75-16 (E1) | GR - BR | Shift solenoid valve DSU signal | Lock-up turned from off to on | Pulse generation |
| B75-95 (THO1) - B75-96 (ETHO) | LG - BR | CVT fluid temperature sensor signal | CVT fluid temperature: 60 to 120°C (140 to 248°F) | 0.2 to 1.0 V |
| B75-89 (PTO) - B75-121 (EPTO) | B - W | Oil pressure sensor signal | Engine idling and shift lever in P | 0.8 to 1.2 V |
| B75-120 (VCPT) - B75-121 (EPTO) | R - W | Power supply for oil pressure sensor signal | Ignition switch ON | 4.75 to 5.25 V |
| B75-127 (NIN+) - B75-128 (NIN-) | W - B | Transmission revolution sensor (NIN) signal | When driving with shift lever in D | Pulse generation |
| B75-125 (NTO) - B75-16 (E1) | L - BR | Transmission revolution sensor (NT) signal | When driving with shift lever in D | Pulse generation |
| B75-126 (NTB) - B75-16 (E1) | W - BR | Power supply for transmission revolution sensor (NT) | Ignition switch ON | 11 to 14 V |
| B75-129 (NOTO) - B75-16 (E1) | W - BR | Transmission revolution sensor (NOUT) signal | When driving with shift lever in D | Pulse generation |
| B75-130 (NOTB) - B75-16 (E1) | R - BR | Power supply for transmission revolution sensor (NOUT) | Ignition switch ON | 11 to 14 V |
| B75-16 (E1) - Body ground | BR - Body ground | Ground | Always | Below 1 Ω |