1.INSPECTION START Confirm the detected malfunction (A or B). Refer to DTC Logic (GT-R certified NISSAN dealer). Which malfunction is detected? A>>GO TO 3. B>>GO TO 2.
2.CHECK INTAKE SYSTEM
Check the following for connection.

- Air duct
- Vacuum hoses
- Intake air passage between air duct and intake manifold

Is the inspection result normal?
YES>>GO TO 3.
NO>>Reconnect the parts.
3.CHECK GROUND CONNECTION

1. Turn ignition switch OFF.
2. Check ground connection M95. Refer to Ground Inspection in Circuit Inspection.

Is the inspection result normal?
YES>>GO TO 4.
NO>>Repair or replace ground connection.
4.CHECK MAF SENSOR POWER SUPPLY CIRCUIT

1. Disconnect mass air flow (MAF) sensor harness connector.
2. Turn ignition switch ON.
3. Check the voltage between MAF sensor harness connector and ground.

   DTC | MAF sensor | Ground | Voltage
   Bank | Connector | Terminal
   P0101 | 1 | F15 | 5 | Ground | Battery voltage
   P010B | 2 | F31 | 5

Is the inspection result normal?
YES>>GO TO 6.
NO>>GO TO 5.
5.DETECT MALFUNCTIONING PART
Check the following.

- Harness connectors E3, F1
- Harness for open or short between mass air flow sensor and ECM
- Harness for open or short between mass air flow sensor and IPDM E/R

>>Repair open circuit, short to ground or short to power in harness or connectors.
6.CHECK MAF SENSOR GROUND CIRCUIT FOR OPEN AND SHORT

1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check the continuity between MAF sensor harness connector and ECM harness connector.

   DTC | MAF sensor | ECM | Continuity
   Bank | Connector | Terminal | Connector | Terminal
   P0101 | 1 | F15 | 4 | F101 | 22 | Existed
   P010B | 2 | F31 | 4 | 19

4. Also check harness for short to ground and short to power.

Is the inspection result normal?
YES>>GO TO 7.
NO>>Repair open circuit, short to ground or short to power in harness or connectors.
7.CHECK MAF SENSOR INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT

1. Check the continuity between MAF sensor harness connector and ECM harness connector.

   DTC | MAF sensor | ECM | Continuity
   Bank | Connector | Terminal | Connector | Terminal
   P0101 | 1 | F15 | 3 | F101 | 47 | Existed
   P010B | 2 | F31 | 3 | 31

2. Also check harness for short to ground and short to power.

Is the inspection result normal?
YES>>GO TO 8.
NO>>Repair open circuit, short to ground or short to power in harness or connectors.
8.CHECK INTAKE AIR TEMPERATURE SENSOR
Check intake air temperature sensor (bank 1).
Refer to Component Inspection (GT-R certified NISSAN dealer).
Is the inspection result normal?
YES>>GO TO 9.
NO>>Replace mass air flow sensor (bank 1) (with intake air temperature sensor).
9.CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR
Refer to Component Inspection (GT-R certified NISSAN dealer).
Is the inspection result normal?
YES>>GO TO 10.
NO>>Replace EVAP control system pressure sensor.
10.CHECK MASS AIR FLOW SENSOR
Refer to Component Inspection (GT-R certified NISSAN dealer).
Is the inspection result normal?
YES>>GO TO 11.
NO>>Replace malfunctioning mass air flow sensor.
11.CHECK INTERMITTENT INCIDENT
Refer to Intermittent Incident.
>>INSPECTION END