Nissan Sentra manuals

Nissan Sentra Service Manual: P1551, P1552 Battery current sensor

Nissan Sentra Service Manual / Engine / Engine control system / Dtc/circuit diagnosis / P1551, P1552 Battery current sensor

DTC Logic

DTC DETECTION LOGIC

DTC No.

 CONSULT screen terms (Trouble diagnosis content) DTC detecting condition Possible cause
P1551 BAT CURRENT SENSOR (Battery current sensor) An excessively low voltage from the sensor is sent to ECM.
  • Harness or connectors (Battery current sensor circuit is open or shorted.)
  • Battery current sensor
  • Camshaft position sensor
  • Camshaft (Intake)
  • Starter motor
  • Starting system circuit
  • Dead (Weak) battery
  • Sensor power supply 1 circuit
P1552 BAT CURRENT SENSOR (Battery current sensor) An excessively high voltage from the sensor is sent to ECM.

DTC CONFIRMATION PROCEDURE

1.PRECONDITIONING

If DTC Confirmation Procedure has been previously conducted, always perform the following before conducting the next test.

  1. Turn ignition switch OFF and wait at least 10 seconds.
  2. Turn ignition switch ON.
  3. Turn ignition switch OFF and wait at least 10 seconds.

TESTING CONDITION:

Before performing the following procedure, confirm that battery voltage is more than 8 V with ignition switch ON

>> GO TO 2.

2.PERFORM DTC CONFIRMATION PROCEDURE

  1. Turn ignition switch ON and wait at least 10 seconds.
  2. Check 1st trip DTC.

Is 1st trip DTC detected? YES >> Proceed to EC-377, "Diagnosis Procedure".

NO >> INSPECTION END

Diagnosis Procedure

1.CHECK BATTERY CURRENT SENSOR POWER SUPPLY

  1. Turn ignition switch OFF.
  2. Disconnect battery current sensor harness connector.
  3. Turn ignition switch ON.
  4. Check the voltage between battery current sensor harness connector and ground.

Is the inspection result normal?


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

NO >> GO TO 2.

2.CHECK SENSOR POWER SUPPLY 2 CIRCUIT

Check sensor power supply 2 circuit. Refer to EC-444, "Diagnosis Procedure".

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

NO >> Repair or replace error-detected parts.

3.CHECK BATTERY CURRENT SENSOR GROUND CIRCUIT

  1. Turn ignition switch OFF.
  2. Disconnect ECM harness connector
  3. Check the continuity between battery current sensor harness connector and ECM harness connector.


  1. Also check harness for short to power.

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

NO >> Repair or replace error-detected parts.

4.CHECK BATTERY CURRENT SENSOR INPUT SIGNAL CIRCUIT

  1. Check the continuity between battery current sensor harness connector and ECM harness connector.


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

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

NO >> Repair or replace error-detected parts

5.CHECK BATTERY CURRENT SENSOR

Check the battery current sensor. Refer to EC-378, "Component Inspection (Battery Current Sensor)".

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

NO >> Replace battery current sensor. Refer to PG-53, "Removal and Installation".

Component Inspection (Battery Current Sensor)

1.CHECK BATTERY CURRENT SENSOR

  1. Turn ignition switch OFF.
  2. Reconnect harness connectors disconnected.
  3. Disconnect battery negative cable.
  4. Install jumper cable between battery negative terminal and body ground.


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

Before measuring the terminal voltage, confirm that the battery is fully


Before measuring the terminal voltage, confirm that the battery is fully charged. Refer to PG-4, "How to Handle Battery".

Is the inspection result normal? YES >> INSPECTION END

NO >> Replace battery current sensor. Refer to PG-53, "Removal and Installation".

P1550 Battery current sensor
DTC Logic DTC DETECTION LOGIC DTC No. CONSULT screen terms (Trouble diagnosis content) DTC detecting condition Possible cause P1550 BAT CURRENT SENSOR (Battery curr ...

P1553 Battery current sensor
DTC Logic DTC DETECTION LOGIC DTC No. CONSULT screen terms (Trouble diagnosis content) DTC detecting condition Possible cause P1553 BAT CURRENT SENSOR (Battery curr ...

Other materials:

Rear door finisher
Exploded View Rear door panel Rear door finisher Inside door handle escutcheon Rear power window switch finisher Grommet Clip Pawl Front Removal and Installation CAUTION: When removing, always use a suitable tool that is made of plastic to prevent damage to the p ...

Combination switch
Exploded view Combination switch Combination switch harness connector Front NOTE: Shown with the steering wheel removed for clarity only. Removal and installation REMOVAL CAUTION: Before servicing, turn the ignition switch OFF, disconnect both battery terminals and wait at l ...

B0091 Front side air bag satellite sensor LH
Description DTC B0091 FRONT SATELLITE SENSOR LH The front side air bag satellite sensor LH is wired to the air bag diagnosis sensor unit. The air bag diagnosis sensor unit will monitor the front side air bag satellite sensor LH for internal failures and its circuits for communication errors. ...

В© 2014-2025 Copyright www.nisentra.com