Nissan Maxima Service and Repair Manual: B2553 ignition relay

Description

BCM turns ON the following relays to ignition power supply to each ECU when the ignition switch is turned ON.

  • Ignition relay-1 (inside IPDM E/R)
  • Ignition relay-2 (inside fuse block (J/B))
  • Front blower motor relay

BCM checks any ignition relay ON request for consistency with the actual ignition relay operation status.

DTC Logic

DTC DETECTION LOGIC

Nissan Maxima. DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1. PERFORM DTC CONFIRMATION PROCEDURE

  1. Turn ignition switch ON under the following conditions, and wait for at least 2 seconds.
  • CVT selector lever is in the P or N position.
  • Release brake pedal.
  1. Check "Self diagnostic result" with CONSULT.

Diagnosis Procedure

1. CHECK IGNITION RELAY-2 FEEDBACK INPUT SIGNAL

Nissan Maxima. CHECK IGNITION RELAY-2 FEEDBACK INPUT SIGNAL

Check voltage between BCM harness connector and ground under the following conditions.

Nissan Maxima. CHECK IGNITION RELAY-2 FEEDBACK INPUT SIGNAL

2. CHECK IGNITION RELAY-2 FEEDBACK CIRCUIT

Nissan Maxima. CHECK IGNITION RELAY-2 FEEDBACK CIRCUIT

  1. Turn ignition switch OFF.
  2. Disconnect BCM and fuse block (J/B).
  3. Check continuity between BCM harness connector (A) and fuse block (J/B) harness connector (B).

Nissan Maxima. CHECK IGNITION RELAY-2 FEEDBACK CIRCUIT

Nissan Maxima. CHECK IGNITION RELAY-2 FEEDBACK CIRCUIT

  1. Check continuity between BCM harness connector and ground.

Nissan Maxima. CHECK IGNITION RELAY-2 FEEDBACK CIRCUIT

3. CHECK INTERMITTENT INCIDENT

    U1010 control unit (CAN)
    DTC Logic DTC DETECTION LOGIC Diagnosis Procedure 1. REPLACE BCM When DTC U1010 is detected, replace BCM. ...

    B260A ignition relay
    Description BCM turns ON the following relays to ignition power supply to each ECU when the ignition switch is turned ON. Ignition relay-1 (inside IPDM E/R) Ignition relay-2 (inside fuse bl ...

    Other materials:

    Main line between A-bag and ABS circuit
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    Both side headlamps (LO) are not turned on
    Description The headlamps (both sides) do not turn ON in any lighting switch setting. Diagnosis Procedure 1.CHECK COMBINATION SWITCH (LIGHTING AND TURN SIGNAL SWITCH) Check the combination switch (lighting and turn signal switch 2.CHECK HEADLAMP (LO) REQUEST SIGNAL INPUT CONSULT DATA MONITOR ...

    IPDM-E 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 IPDM E/R for damage, bend and loose connection (unit side and connector side). 2.CHECK HARNESS FOR OPEN CIRCUIT ...

    Nissan Maxima Owners Manual

    Nissan Maxima Service and Repair Manual

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