Your Vehicle: 2009 Nissan-Datsun Altima V6-3.5L (VQ35DE)
 
Vehicle » A L L Diagnostic Trouble Codes ( DTC ) » Testing and Inspection » B Code Charts » B261A » Power Distribution System  
 
 
  Power Distribution System  
 

B261A PUSH-BUTTON IGNITION SWITCH

Description
BCM transmits the change in the power supply position with the push-button ignition switch to IPDM E/R via the CAN communication line. IPDM E/R transmits the power supply position status via CAN communication line to BCM.

DTC Logic

DTC DETECTION LOGIC

  

DTC CONFIRMATION PROCEDURE

  1. PERFORM DTC CONFIRMATION PROCEDURE
  1. Press the push-button ignition switch under the following conditions, and wait for at least 1 second.
    • CVT selector lever is in the P or N position.
    • Release the 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 PUSH-BUTTON IGNITION SWITCH OPERATION Press push-button ignition switch and check if it turns to ON.

Does ignition switch turn to ON?
YES >> GO TO 2
NO >> GO TO 4

  1. CHECK IGNITION SWITCH OUTPUT SIGNAL (IPDM E/R)

  

  1. Disconnect push-button ignition switch.
  2. Check voltage between IPDM E/R harness connector and ground.

  

Is the Inspection result normal?
YES >> GO TO 3
NO >> Replace IPDM E/R. Refer to See: Power and Ground Distribution\Power Distribution Module\Service and Repair.

  1. CHECK PUSH-BUTTON IGNITION SWITCH CIRCUIT (IPDM E/R)

  

  1. Disconnect IPDM E/R and BCM.
  2. Check continuity between IPDM E/R harness connector (A) and push-button ignition switch harness connector (B).

  

  

  1. Check continuity between IPDM E/R harness connector and ground.

  

Is the Inspection result normal?
YES >> GO TO 6
NO >> Repair or replace harness.

  1. CHECK IGNITION SWITCH OUTPUT SIGNAL (BCM)

  

  1. Disconnect push-button ignition switch.
  2. Check voltage between BCM harness connector and ground.

  

Is the Inspection result normal?
YES >> GO TO 5
NO >> Replace BCM. Refer to See: Body and Frame\Body Control Systems\Body Control Module\Service and Repair.

  1. CHECK PUSH-BUTTON IGNITION SWITCH CIRCUIT (BCM)

  

  1. Disconnect BCM and IPDM E/R.
  2. Check continuity between BCM harness connector (A) and push-button ignition switch harness connector (B).

  

  

  1. Check continuity between BCM harness connector and ground.

  

Is the Inspection result normal?
YES >> GO TO 6
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.