DTC DETECTION LOGIC

DTC No. | Trouble diagnosis name | DTC detecting condition | Possible cause
P2440 | Air cut solenoid valve (bnak1) stuck open |

- ECM detects that the air cut solenoid valve (bank 1) is stuck open.
- ECM detects that the air cut solenoid valve (bank 1, bank 2 or both bank) is stuck open.

- Harness or connectors
  (Air cut solenoid valve circuit is open or shorted.)
  (Air cut solenoid valve relay circuit is open or shorted.)
- Air cut solenoid valve
- Air cut solenoid valve relay

P2442 | Air cut solenoid valve (bnak2) stuck open |

- ECM detects that the air cut solenoid valve (bank 2) is stuck open.

DTC CONFIRMATION PROCEDURE
1.CHECK SECONDARY AIR INJECTION SYSTEM MASS AIR FLOW SENSOR

1. Start engine and warm it up to the normal operating temperature.
2. Stop the engine and turn ignition switch OFF.
3. Cool down the engine so that the coolant temperature lowers between 15 - 35°C (59 - 95°F).
   ■ CAUTION ■
   Never turn the ignition switch ON while cooling down the engine.
   NOTE：
   The engine cooling down time varies depending on the ambient temperature. Putting the vehicle in an indoor place where the temperature is moderate may shorten the cooling down time.
4. Check the voltage between ECM harness connector terminals under the following conditions.

   ECM | Condition | Voltage
   Connector | + | −
   Terminal | Terminal
   F22 | 24 (Secondary air injection system mass air flow sensor) | 23 | Turning ignition switch ON (Engine stopped) | 0.15 - 0.4 V
   Idle speed (Secondary air injection system operates.) | 3 - 3.8 V

Is DTC detected?
YES>>GO TO 2.
NO>>Go to Diagnosis Procedure (GT-R certified NISSAN dealer).
2.PRECONDITIONING
If DTC Confirmation Procedure has been previously conducted, always perform the following before conducting the next test.

1. Turn ignition switch OFF and wait at least 10 seconds.
2. Turn ignition switch ON.
3. Turn ignition switch OFF and wait at least 10 seconds.

TESTING CONDITION:

- Before performing the following procedure, confirm that battery voltage is more than 11 V at idle.
- Before performing the following procedure, check that the atmospheric pressure is 87 kPa (653 mmHg, 25.71 inHg) or more.

>>GO TO 3.
3.PERFORM DTC CONFIRMATION PROCEDURE

1. Start engine and warm it up to the normal operating temperature.
2. Stop the engine and turn ignition switch OFF.
3. Cool down the engine so that the coolant temperature lowers between 15 - 35°C (59 - 95°F).
   ■ CAUTION ■
   Never turn the ignition switch ON while cooling down the engine.
   NOTE：
   The engine cooling down time varies depending on the ambient temperature. Putting the vehicle in an indoor place where the temperature is moderate may shorten the cooling down time.
4. Start engine and let it idle for at least 40 seconds.
5. Check 1st trip DTC.

Is 1st trip DTC detected?
YES>>Go to Diagnosis Procedure (GT-R certified NISSAN dealer).
NO>>INSPECTION END