Nissan GT-R (R35) · Service Manual ENGINE

P2432, P2433 SECONDARY AIR INJECTION SYSTEM MAF SENSOR

VR38

P2432 P2433

Description


The secondary air injection system mass air flow sensor (1) is installed on the lower side of the air pump cleaner assembly (2) and measures the secondary air flow. The secondary air injection system mass air flow sensor controls the temperature of the hot wire to a certain amount. The heat generated by the hot wire is reduced as the secondary air flows around it. The greater air flow, the greater the heat loss. Therefore, the electric current supplied to hot wire is changed to maintain the temperature of the hot wire as secondary air flow increases. The ECM detects the secondary air flow by means of this current change.

NNBIB0004ZZ.JPG

DTC Logic

 
 DTC DETECTION LOGIC

DTC No.
 		Trouble diagnosis name
 		DTC detecting condition
 		Possible cause
P2432
 		Secondary air injection system mass air flow sensor circuit low input
 		An excessively low voltage from the sensor is sent to ECM.
  • Harness or connectors
    (The sensor circuit is open or shorted.)
  • Secondary air injection system mass air flow sensor
P2433
 		Secondary air injection system mass air flow sensor circuit high input
 		An excessively high voltage from the sensor is sent to ECM.

 
 DTC CONFIRMATION PROCEDURE

 
 1.PRECONDITIONING
 
 2.PERFORM DTC CONFIRMATION PROCEDURE

Diagnosis Procedure


 
 1.1.CHECK GROUND CONNECTION
 
 2.CHECK SECONDARY AIR INJECTION SYSTEM MAF SENSOR POWER SUPPLY CIRCUIT
 
 3.CHECK SECONDARY AIR INJECTION SYSTEM MAF SENSOR GROUND CIRCUIT FOR OPEN AND SHORT
 
 4.DETECT MALFUNCTIONING PART
 
 5.CHECK SECONDARY AIR INJECTION SYSTEM MAF SENSOR INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
 
 6.DETECT MALFUNCTIONING PART
 
 7.CHECK SECONDARY AIR INJECTION SYSTEM MAF SENSOR
 
 8.CHECK INTERMITTENT INCIDENT

Component Inspection


 
 1.CHECK SECONDARY AIR INJECTION SYSTEM MASS AIR FLOW SENSOR