Your Vehicle: 2009 Nissan-Datsun Altima V6-3.5L (VQ35DE)
 
Vehicle » A L L Diagnostic Trouble Codes ( DTC ) » Testing and Inspection » B Code Charts » B2553  
 
 
  B2553  
 

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)
  • Blower fan motor relay BCM checks any ignition relay ON request for consistency with the actual ignition relay operation status.

DTC Logic

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-III. Is DTC detected?

YES >> Go to "Diagnosis Procedure".
NO >> Inspection End.

Diagnosis Procedure

  1. CHECK IGNITION RELAY FEEDBACK INPUT SIGNAL

  

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

  

Is the Inspection result normal?
YES >> Replace BCM. Refer to See: Body and Frame\Body Control Systems\Body Control Module\Service and Repair.
NO >> GO TO 2

  1. CHECK IGNITION RELAY FEEDBACK CIRCUIT

  

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

  

  

  1. Check continuity between BCM harness connector and ground.

  

Is the Inspection result normal?
YES >> GO TO 3
NO >> Repair or replace harness.

  1. CHECK INTERMITTENT INCIDENT

Refer to See: Testing and Inspection\Initial Inspection and Diagnostic Overview\Service Information For Electrical Incident\Intermittent Incident.
>> Inspection End.