Nissan Sentra manuals

Nissan Sentra Service Manual: Sensor power supply 2 circuit

Description

ECM supplies a voltage of 5.0 V to some of the sensors systematically divided into 2 groups, respectively.

Accordingly, when a short circuit develops in a sensor power source, a malfunction may occur simultaneously in the sensors belonging to the same group as the shorted-circuit sensor.

Sensor power supply 1

NOTE:

If sensor power supply 1 circuit is malfunctioning, DTC P0643 is displayed.

Sensor power supply 2

Diagnosis Procedure

1.CHECK ACCELERATOR PEDAL POSITION SENSOR 2 POWER SUPPLY CIRCUIT-1

  1. Turn ignition switch OFF.
  2. Disconnect accelerator pedal position (APP) sensor harness connector.
  3. Turn ignition switch ON.
  4. Check the voltage between APP sensor harness connector and ground.

Is the inspection result normal?


Is the inspection result normal? YES >> GO TO 4.

NO >> GO TO 2.

2.CHECK ACCELERATOR PEDAL POSITION SENSOR 2 POWER SUPPLY CIRCUIT-2

  1. Turn ignition switch OFF.
  2. Disconnect ECM harness connector.
  3. Turn ignition switch ON.
  4. Check the continuity between APP sensor harness connector and ECM.

CVT models

Is the inspection result normal?


Is the inspection result normal? YES >> GO TO 3.

NO >> Repair or replace error-detected parts.

3.CHECK SENSOR POWER SUPPLY CIRCUITS

Check harness for short to power and short to ground, between the following terminals.

Is the inspection result normal?


Is the inspection result normal? YES >> GO TO 4.

NO >> Repair or replace error-detected parts.

4.CHECK COMPONENTS

Check the following.

Is the inspection result normal?


Is the inspection result normal? YES >> GO TO 5.

NO >> Repair or replace malfunctioning component.

5.CHECK APP SENSOR

Check APP sensor. Refer to EC-436, "Component Inspection (APP Sensor)".

Is the inspection result normal? YES >> Check intermittent incident. Refer to GI-39, "Intermittent Incident".

NO >> Replace accelerator pedal assembly. Refer to ACC-3, "Removal and Installation".

P2138 APP Sensor
DTC Logic DTC DETECTION LOGIC NOTE: If DTC P2138 is displayed with DTC P0643, first perform the trouble diagnosis for DTC P0643. Refer to EC-353, "DTC Logic". DTC No. CONSUL ...

Brake pedal position switch
Component Function Check 1.CHECK BRAKE PEDAL POSITION SWITCH FUNCTION With CONSULT Turn ignition switch ON. Select “ENGINE” using CONSULT. Select “BRAKE SW1” in “DA ...

Other materials:

VDC/TCS/ABS
Symptom Table If ABS warning lamp and SLIP indicator lamp turn ON, perform self-diagnosis. NOTE: 1: The ABS does not operate when the speed is 10 km/h (6 MPH) or less. 2: Under the following conditions, ABS is activated and vibration is felt when brake pedal is lightly depr ...

Steering knuckle
Exploded View Steering knuckle Splash guard Wheel stud Wheel hub and bearing Disc brake rotor Wheel hub lock nut Nut retainer Cotter pin Removal and Installation REMOVAL Remove the wheel and tire using power tool. Refer to WT-47, "Exploded View". Remove ...

Diagnosis and repair work flow
Work Flow OVERALL SEQUENCE DETAILED FLOW 1.COLLECT INFORMATION FROM THE CUSTOMER Get detailed information from the customer about the symptom (the condition and the environment when the incident/malfunction occurred) using the diagnostic worksheet. Refer to BRC-52, "Diagnostic Wor ...

© 2014-2026 Copyright www.nisentra.com