Nissan Sentra manuals

Nissan Sentra Service Manual: Power supply and ground circuit

Nissan Sentra Service Manual / Engine / Engine control system / Dtc/circuit diagnosis / Power supply and ground circuit

Diagnosis Procedure

1.CHECK FUSE

Check that the following fuse is not fusing.

Is the fuse fusing?


Is the fuse fusing? YES >> Replace the fuse after repairing the applicable circuit.

NO >> GO TO 2.

2.CHECK GROUND CONNECTION

  1. Turn ignition switch OFF
  2. Check ground connection E9 and E15. Refer to GI-42, "Circuit Inspection".

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

NO >> Repair or replace ground connection.

3.CHECK ECM GROUND CIRCUIT

  1. Disconnect ECM harness connectors.
  2. Check the continuity between ECM harness connector and ground.

Is the inspection result normal?


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

NO >> Repair or replace error-detected parts.

4.CHECK ECM POWER SUPPLY (MAIN)-1

  1. Reconnect ECM harness connector.
  2. Turn ignition switch ON.
  3. Check the voltage between ECM harness connector terminals.

Is the inspection result normal?


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

NO >> GO TO 6.

5.CHECK ECM POWER SUPPLY (MAIN)-2

  1. Turn ignition switch OFF and wait at least 10 seconds.
  2. Check the voltage between ECM harness connector terminals as per the following.

Is the inspection result normal?


Is the inspection result normal? YES >> GO TO 9.

NO >> GO TO 7.

6.CHECK ECM POWER SUPPLY (MAIN) CIRCUIT

  1. Turn ignition switch OFF.
  2. Disconnect ECM harness connectors.
  3. Disconnect IPDM E/R harness connector.
  4. Check the continuity between ECM harness connector and IPDM E/R harness connector.


  1. Also check harness for short to ground.

Is the inspection result normal? YES >> Perform the trouble diagnosis for power supply circuit.

NO >> Repair or replace error-detected parts.

7.CHECK ECM RELAY CONTROL SIGNAL

Check the voltage between ECM harness connector terminals as per the following.

Is the inspection result normal?


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

NO >> GO TO 8.

8.CHECK ECM RELAY CONTROL SIGNAL CIRCUIT

  1. Turn ignition switch OFF
  2. Disconnect ECM harness connector.
  3. Disconnect IPDM E/R harness connector
  4. Check the continuity between ECM harness connector and IPDM E/R harness connector.


  1. Also check harness for short to ground and to power.

Is the inspection result normal? YES >> Replace IPDM E/R. Refer to PCS-58, "Removal and Installation" (with intelligent key), PCS-58, "Removal and Installation" (without intelligent key).

NO >> Repair or replace error-detected parts.

9.CHECK IGNITION SWITCH SIGNAL

  1. Turn ignition switch ON.
  2. Check the voltage between ECM harness connector terminals.

Is the inspection result normal?


Is the inspection result normal? YES >> GO TO 11.

NO >> GO TO 10.

10.CHECK IGNITION SWITCH SIGNAL CIRCUIT

  1. Turn ignition switch OFF.
  2. Disconnect ECM harness connector.
  3. Disconnect IPDM E/R harness connector.
  4. Check the continuity between ECM harness connector and IPDM E/R harness connector.


  1. Also check harness for short to ground and to power.

Is the inspection result normal? YES >> Perform the trouble diagnosis for power supply circuit.

NO >> Repair or replace error-detected parts.

11.CHECK ECM POWER SUPPLY (BACK-UP)

Check the voltage between ECM harness connector terminals.

Is the inspection result normal?


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

NO >> GO TO 12.

12.CHECK ECM POWER SUPPLY (BACK-UP) CIRCUIT

  1. Turn ignition switch OFF.
  2. Disconnect ECM harness connector.
  3. Disconnect IPDM E/R harness connector.
  4. Check the continuity between ECM harness connector and IPDM E/R harness connector.


  1. Also check harness for short to ground.

Is the inspection result normal? YES >> Perform the trouble diagnosis for power supply circuit.

NO >> Repair or replace error-detected parts.

Trouble diagnosis - specification value
Description The specification (SP) value indicates the tolerance of the value that is displayed in “SPEC” of “DATA MONITOR” mode of CONSULT during normal operation of the Engin ...

U0101 can comm circuit
Description CAN (Controller Area Network) is a serial communication line for real time application. It is an on-vehicle multiplex communication line with high data communication speed and excellen ...

Other materials:

When traveling or registering your vehicle in another country
When planning to drive your NISSAN vehicle in another country, you should first find out if the fuel available is suitable for your vehicle’s engine. Using fuel with an octane rating that is too low may cause engine damage. All gasoline vehicles must be operated with unleaded gasoline. The ...

C1105, C1106, C1107, C1108 Wheel sensor
Description When the sensor rotor rotates, the magnetic field changes. It converts the magnetic field changes to current signals (rectangular wave) and transmits them to the ABS actuator and electric unit (control unit). DTC Logic DTC DETECTION LOGIC DTC Display Item Malfunct ...

Symptom diagnosis
The eco mode indicator lamp does not turn on Description The ECO mode indicator lamp does not turn ON when the ECO mode switch is operated. Diagnosis Procedure 1.Perform combination meter on board diagnosis Perform combination meter on board diagnosis. Refer to MWI-16, "Description" ...

© 2014-2020 Copyright www.nisentra.com