Sensor Power Supply
WARNING: This page is about a different car, the 2019 Nissan NV3500 HD, 2019 Nissan NV2500 HD, and 2019 Nissan NV1500. However, it is still accessible from the selected car via links, so may be relevant.
Sensor Power Supply 1
- Accelerator pedal position sensor (APP sensor 1)
- Electric throttle control actuator
NOTE:
If sensor power supply 1 circuit is malfunctioning, DTC P0643 is displayed.
Sensor Power Supply 2
- Accelerator pedal position sensor (APP sensor 2)
- Refrigerant pressure sensor
- Power steering pressure sensor
- CHECK SENSOR POWER SUPPLY
- Turn ignition switch ON.
- Check the voltage between ECM harness connector terminals.
+
-
Voltage
(Approx.)
ECM
Connector
Terminal
Connector
Terminal
E16
142
E16
152
5 V
F77
78
Is the inspection result normal?
YES
Check intermittent incident. Refer to Intermittent Incident .
NO
GO TO 2.
- CHECK SENSOR POWER SUPPLY 2 CIRCUIT
- Disconnect following sensors harness connector.
- Check harness for short to power and short to ground, between the following terminals.
+
-
ECM
Sensor
Connector
Terminal
Name
Connector
Terminal
E16
103
APP sensor 2
E20
2
F54
18
Refrigerant pressure sensor
E48
1
Power steering pressure sensor
F46
2
Is the inspection result normal?
YES
GO TO 3.
NO
Repair short to ground or short to power in harness or connectors.
- CHECK COMPONENTS
Check the following.
- APP sensor 2 (Refer to Component Inspection .)
- Refrigerant pressure sensor
- Power steering pressure sensor
Is the inspection result normal?
YES
Refer to Intermittent Incident .
NO
Replace malfunctioning component.