DTC P0643 Sensor Power Supply: Wiring Diagram
WARNING: This page is about a different car, the 2007 Nissan Pathfinder. However, it is still accessible from the selected car via links, so may be relevant.
Refer to POWER SUPPLY, GROUND & CIRCUIT ELEMENTS PATHFINDER-->.
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.
SPECIFICATION DATA AND REFERENCE VALUES CHART
| TERMINAL NO. | WIRE COLOR | ITEM | CONDITION | DATA (DC Voltage) |
|---|---|---|---|---|
| 48 | SB | Sensor power supply (EVAP control system pressure sensor) | [Ignition switch: ON] | Approximately 5V |
| 49 | P | Sensor power supply (Refrigerant pressure sensor/ Battery current sensor) | [Ignition switch: ON] | Approximately 5V |
| 68 | G | Sensor power supply (Power steering pressure sensor) | [Ignition switch: ON] | Approximately 5V |
| 82 | B | Sensor ground (APP sensor 1) | [Engine is running]
|
Approximately 0V |
| 83 | B | Sensor ground (APP sensor 2) | [Engine is running]
|
Approximately 0V |
| 90 | L | Sensor power supply (APP sensor 1) | [Ignition switch: ON] | Approximately 5V |
| 91 | G | Sensor power supply (APP sensor 2) | [Ignition switch: ON] | Approximately 5V |
| 98 | GR | Accelerator pedal position sensor 2 | [Ignition switch: ON]
|
0.28 - 0.48V |
[Ignition switch: ON]
|
More than 2.0V | |||
| 106 | R | Accelerator pedal position sensor 1 | [Ignition switch: ON]
|
0.65 - 0.87V |
[Ignition switch: ON]
|
More than 4.3V |