Nissan Maxima Service and Repair Manual: 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 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

NOTE:

  • If DTC B260A is displayed with DTC U1000, first perform the trouble diagnosis for DTC U1000. Refer to PCS-44, "DTC Logic".
  • If DTC B260A is displayed with DTC U1010, first perform the trouble diagnosis for DTC U1010. Refer to PCS-45, "DTC Logic".
  • If DTC B260A is displayed with DTC B261A, first perform the trouble diagnosis for DTC B261A. Refer to PCS-60, "DTC 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 the brake pedal.
  1. Check "Self diagnostic result" with CONSULT.

Diagnosis Procedure

1.CHECK DATA MONITOR

  1. Turn ignition switch ON.
  2. Check IGN RLY1-REQ and IGN RLY status with CONSULT

2.CHECK CAN COMMUNICATION

Check CAN communication.

3.CHECK IGNITION RELAY-1 SIGNAL

Nissan Maxima. CHECK IGNITION RELAY-1 SIGNAL

  1. Turn ignition switch OFF.
  2. Check voltage between IPDM E/R harness connector and ground.

Nissan Maxima. CHECK IGNITION RELAY-1 SIGNAL

Nissan Maxima. CHECK IGNITION RELAY-1 SIGNAL

  1. Turn ignition switch ON.
  2. Check voltage between IPDM E/R harness connector and ground.

Nissan Maxima. CHECK IGNITION RELAY-1 SIGNAL

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