Power Supply Circuit For ECM: Wiring Diagram
Specification data in the following table are reference values and are measured between each terminal and ground.
CAUTION:
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in damage to the ECM's transistor. Use a ground other than ECM terminals, such as the engine ground.
SPECIFICATION DATA AND OUTPUT/INPUT VALUES
| TERMINAL NO. | WIRE COLOR | ITEM | CONDITION | DATA (DC Voltage) |
|---|---|---|---|---|
| 109 | W/L | Ignition switch | [Ignition switch: OFF] | 0V |
| [Ignition switch: ON] | BATTERY VOLTAGE (11 - 14V) | |||
| 111 | W | ECM relay (Self shut-off) | [Engine is running] [Ignition switch: OFF]
|
0 - 1.5V |
[Ignition switch: OFF]
|
BATTERY VOLTAGE (11 - 14V) | |||
| 119 120 |
P L |
Power supply for ECM | [Ignition switch: ON] | BATTERY VOLTAGE (11 - 14V) |
Specification data in the following table are reference values and are measured between each terminal and ground.
CAUTION:
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in damage to the ECM's transistor. Use a ground other than ECM terminals, such as the engine ground.
SPECIFICATION DATA AND REFERENCE VALUES
| TERMINAL NO. | WIRE COLOR | ITEM | CONDITION | DATA (DC Voltage) |
|---|---|---|---|---|
| 1 | B | ECM ground | [Engine is running]
|
Engine ground |
| 115 116 |
B/R B |
ECM ground | [Engine is running]
|
Engine ground |