Power Supply And Ground Circuit: Wiring Diagram
WARNING: This page is about a different car, the 2005 Nissan Titan. However, it is still accessible from the selected car via links, so may be relevant.
Specification data 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 ground.
SERVICE DATA AND SPECIFICATIONS
| TERMINAL NO. | WIRE COLOR | ITEM | CONDITION | DATA (DC Voltage) |
|---|---|---|---|---|
| 1 | B | ECM ground | [Engine is running]
|
Body ground |
| 109 | L/W | Ignition switch | [Ignition switch: OFF] | 0V |
| [Ignition switch: ON] | BATTERY VOLTAGE (11 - 14V) | |||
| 111 | W/B | ECM relay (Self shut-off) | [Engine is running] [Ignition switch: OFF]
|
0 - 1.5V |
[Ignition switch: OFF]
|
BATTERY VOLTAGE (11 - 14V) | |||
| 115 116 |
B B/W |
ECM ground | [Engine is running]
|
Body ground |
| 119 120 |
BR BR |
Power supply for ECM | [Ignition switch: ON] | BATTERY VOLTAGE (11 - 14V) |