Toyota
Nissan Versa
 Sedan Service Manual
Electrical & power control » LAN System (LAN)
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?

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 "Diagnosis Procedure".

Is the inspection result normal?

YES (Present error)>>Replace the ECM. Refer to EC"Removal and Installation".

YES (Past error)>>Error was detected in the ECM branch line.

NO >> Repair the power supply and the ground circuit.

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    Main line between IPDM-E and DLC circuit

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    ABS Branch line circuit 

    IPDM-E Branch line circuit 

    TCM Branch line circuit 

    A-BAG Branch line circuit

    DLC Branch line circuit 

    EPS Branch line circuit 

    M&A Branch line circuit

    STRG Branch line circuit

    BCM Branch line circuit

    CAN Communication circuit

    Main line between IPDM-E and DLC circuit

    ECM Branch line circuit

    ABS Branch line circuit

    IPDM-E Branch line circuit

    TCM Branch line circuit

    A-BAG Branch line circuit

    AV Branch line circuit

    DLC Branch line circuit

    EPS Branch line circuit

    M&A Branch line circuit

    STRG Branch line circuit

    BCM Branch line circuit

    CAN Communication circuit

    Nissan Versa Sedan Service Manual / Electrical & power control / LAN System (LAN) / ECM Branch line circuit

    Nissan Versa Sedan Service Manual

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