1.CHECK HOSE AND PIPING Check the following.

- Disconnection, clogging, collapsing and damage of hose or piping between secondary air injection system mass air flow sensor and air pump.
- Disconnection, clogging, collapsing and damage of hose or piping between air pump and air cut solenoid valve.
- Clogging of hose or piping between air cut solenoid valve and cylinder head.

Is the inspection result normal?
YES>>GO TO 2.
NO>>Repair or replace malfunctioning part.
2.CHECK AIR PUMP RELAY POWER SUPPLY CIRCUIT-I

1. Disconnect air pump relay harness connector.
2. Turn ignition switch ON.
3. Check the voltage between air pump relay harness connector and ground.

   Air pump relay | Ground | Voltage
   Connector | Terminal
   E51 | 1 | Ground | Battery voltage
   3

Is the inspection result normal?
YES>>GO TO 4.
NO>>GO TO 3.
3.DETECT MALFUNCTIONING PART
Check the following.

- 40A fusible link (letter K)
- Harness for open or short between air pump relay and IPDM E/R
- Harness for open or short between air pump relay and battery

>>Repair open circuit, short to ground or short to power in harness or connectors.
4.CHECK AIR PUMP RELAY POWER SUPPLY CIRCUIT-II

1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check the continuity between air pump relay harness connector and ECM harness connector.

   Air pump relay | ECM | Continuity
   Connector | Terminal | Connector | Terminal
   E51 | 2 | M107 | 120 | Existed

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

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

- Harness or connectors E106, M6
- Harness for open or short between air pump relay and ECM

>>Repair open circuit, short to ground or short to power in harness or connectors.
6.CHECK AIR PUMP RELAY
Refer to Component Inspection (AIR PUMP RELAY) (GT-R certified NISSAN dealer).
Is the inspection result normal?
YES>>GO TO 7.
NO>>Replace air pump relay.
7.CHECK AIR PUMP POWER SUPPLY CIRCUIT

1. Disconnect air pump harness connector.
2. Check the continuity between air pump relay harness connector and air pump harness connector.

   Air pump relay | Air pump | Continuity
   Connector | Terminal | Connector | Terminal
   E51 | 5 | E14 | 2 | Existed

3. 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 AIR PUMP GROUND CIRCUIT FOR OPEN AND SHORT

1. Check the continuity between air pump harness connector and ground.

   Air pump | Ground | Continuity
   Connector | Terminal
   E14 | 1 | Ground | Existed

2. Also check harness for short to power.

Is the inspection result normal?
YES>>GO TO 9.
NO>>Repair open circuit or short to power in harness or connectors.
9.CHECK AIR PUMP
Refer to Component Inspection (AIR PUMP) (GT-R certified NISSAN dealer).
Is the inspection result normal?
YES>>GO TO 10.
NO>>Replace air pump assembly.
10.CHECK AIR CUT SOLENOID VALVE RELAY POWER SUPPLY CIRCUIT-I

1. Reconnect all harness connectors disconnected.
2. Disconnect air cut solenoid valve relay harness connector.
3. Turn ignition switch ON.
4. Check the voltage between air cut solenoid valve relay harness connector and ground.

   Air cut solenoid valve relay | Ground | Voltage
   Connector | Terminal
   E52 | 1 | Ground | Battery voltage
   5

Is the inspection result normal?
YES>>GO TO 12.
NO>>GO TO 11.
11.DETECT MALFUNCTIONING PART
Check the following.

- 10A fuse (No. 12)
- Harness for open or short between air cut solenoid valve relay and IPDM E/R
- Harness for open or short between air cut solenoid valve relay and fuse block (J/B)

>>Repair open circuit, short to ground or short to power in harness or connectors.
12.CHECK AIR CUT SOLENOID VALVE RELAY POWER SUPPLY CIRCUIT-II

1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check the continuity between air cut solenoid valve relay harness connector and ECM harness connector.

   Air cut solenoid valve relay | ECM | Continuity
   Connector | Terminal | Connector | Terminal
   E52 | 2 | M107 | 109 | Existed

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

Is the inspection result normal?
YES>>GO TO 14.
NO>>GO TO 13.
13.DETECT MALFUNCTIONING PART
Check the following.

- Harness connectors E106, M6
- Harness for open or short between air cut solenoid valve relay and ECM

>>Repair open circuit, short to ground or short to power in harness or connectors.
14.CHECK AIR CUT SOLENOID VALVE RELAY
Refer to Component Inspection (AIR CUT SOLENOID VALVE RELAY) (GT-R certified NISSAN dealer).
Is the inspection result normal?
YES>>GO TO 15.
NO>>Replace air cut solenoid valve relay.
15.CHECK AIR CUT SOLENOID VALVE POWER SUPPLY CIRCUIT

1. Disconnect air cut solenoid valve harness connector.
2. Check the continuity between air cut solenoid valve relay harness connector and air cut solenoid valve harness connector.

   Air cut solenoid valve | Air cut solenoid valve relay | Continuity
   Bank | Connector | Terminal | Connector | Terminal
   1 | F6 | 1 | E52 | 3 | Existed
   2 | F46 | 1

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

Is the inspection result normal?
YES>>GO TO 17.
NO>>GO TO 16.
16.DETECT MALFUNCTIONING PART
Check the following.

- Harness connectors E106, M6
- Harness connectors F103, M116
- Harness for open or short between air cut solenoid valve relay and air cut solenoid valve

>>Repair open circuit, short to ground or short to power in harness or connectors.
17.CHECK AIR CUT SOLENOID VALVE GROUND CIRCUIT FOR OPEN AND SHORT

1. Check the continuity between air cut solenoid valve harness connector and ground.

   Air cut solenoid valve | Ground | Continuity
   Bank | Connector | Terminal
   1 | F6 | 2 | Ground | Existed
   2 | F46 | 2

2. Also check harness for short to power.

Is the inspection result normal?
YES>>GO TO 18.
NO>>Repair open circuit or short to power in harness or connectors.
18.CHECK AIR CUT SOLENOID VALVE
Refer to Component Inspection (AIR CUT SOLENOID VALVE) (GT-R certified NISSAN dealer).
Is the inspection result normal?
YES>>GO TO 19.
NO>>Replace malfunctioning air cut solenoid valve.
19.CHECK INTERMITTENT INCIDENT
Refer to Intermittent Incident.
>>INSPECTION END