DTC P1229: Sensor Power Supply: Wiring Diagram
WARNING: This page is about a different car, the 2005 Infiniti G35. 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.
SENSOR POWER SUPPLY-VOLTAGE SPECIFICATION
| TERMINAL NO. | WIRE COLOR | ITEM | CONDITION | DATA (DC Voltage) |
|---|---|---|---|---|
| 48 | B/Y | Sensor power supply (EVAP control system pressure sensor) | [Ignition switch: ON] | Approximately 5V |
| 49 | W/L | Sensor power supply (Refrigerant pressure sensor) | [Ignition switch: ON] | Approximately 5V |
| 68 | Y | Sensor power supply (Power steering pressure sensor) | [Ignition switch: ON] | Approximately 5V |
| 90 | BR/Y | Sensor power supply (Accelerator pedal position sensor 1) | [Ignition switch: ON] | Approximately 5V |