 1.CHECK HOSE AND PIPING
Check the following. - 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 CUT SOLENOID VALVE RELAY POWER SUPPLY CIRCUIT-I
- Disconnect air cut solenoid valve relay harness connector.
- Turn ignition switch ON.
- 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 4. NO >>GO TO 3.
 3.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.
 4.CHECK AIR CUT SOLENOID VALVE RELAY POWER SUPPLY CIRCUIT-II
- Turn ignition switch OFF.
- Disconnect ECM harness connector.
- 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
|
- 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 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.
 6.CHECK AIR CUT SOLENOID VALVE RELAY
 7.CHECK AIR CUT SOLENOID VALVE POWER SUPPLY CIRCUIT
- Disconnect air cut solenoid valve harness connector.
- 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
|
- Also check harness for short to ground and short to power.
Is the inspection result normal?
YES >>GO TO 9. NO >>GO TO 8.
 8.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.
 9.CHECK AIR CUT SOLENOID VALVE GROUND CIRCUIT FOR OPEN AND SHORT
- 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
|
- Also check harness for short to power.
Is the inspection result normal?
YES >>GO TO 10. NO >>Repair open circuit or short to power in harness or connectors.
 10.CHECK AIR CUT SOLENOID VALVE
 11.CHECK INTERMITTENT INCIDENT
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