Nissan Sentra manuals

Nissan Sentra Service Manual: Ecm branch line circuit

Diagnosis procedure

1.Check connector

  1. Turn the ignition switch OFF.
  2. Disconnect the battery cable from the negative terminal.
  3. Check the terminals and connectors of the ECM for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal? Yes >> go to 2.

No >> repair the terminal and connector.

2.Check harness for open circuit

  1. Disconnect the connector of ecm.
  2. Check the resistance between the ecm harness connector terminals.

Is the measurement value within the specification?


Is the measurement value within the specification? Yes >> go to 3.

No >> repair the ecm branch line.

3.Check power supply and ground circuit

Check the power supply and the ground circuit of the ecm. Refer to ec-164, "diagnosis procedure".

Is the inspection result normal? Yes (present error)>>replace the ecm. Refer to ec-485, "removal and installation".

Yes (past error)>>error was detected in the ecm branch line.

No >> repair the power supply and the ground circuit.

Main line between dlc and hvac circuit
Diagnosis procedure 1.Check harness continuity (open circuit) Turn the ignition switch off. Disconnect the battery cable from the negative terminal. Disconnect the following harness connector ...

Abs branch line circuit
Diagnosis procedure 1.Check connector Turn the ignition switch off. Disconnect the battery cable from the negative terminal. Check the terminals and connectors of the abs actuator and electri ...

Other materials:

Battery terminal with fusible link
Exploded view Battery terminal with fusible link Harness connector Removal and installation Removal Loosen the battery terminal nuts and disconnect both battery negative and positive terminals. Refer to pg-50, "exploded view". Caution: To prevent damage to the parts, di ...

Removal and installation
A/C SWITCH ASSEMBLY Removal and Installation REMOVAL Remove the CVT shift selector finisher (CVT: RE0F11A). Refer to TM-253, "Removal and Installation". Remove the MT shift selector finisher (6MT: RS6F94R). Refer to TM-22, "Removal and Installation". Remove the A/ ...

Headlamp (lo) circuit
Description The ipdm e/r (intelligent power distribution module engine room) controls the headlamp low relay based on inputs from the bcm over the can communication lines. When the headlamp low relay is energized, power flows through fuses 43 and 44, located in the ipdm e/r. Power then flows ...

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