 1.INSPECTION START
Confirm the detected DTC. Which DTC is detected? P0102, P010C >>GO TO 2. P0103, P010D >>GO TO 3.
 2.CHECK INTAKE SYSTEM
Check the following for connection. - Air duct
- Vacuum hoses
- Intake air passage between air duct to intake manifold
Is the inspection result normal? YES >>GO TO 3. NO >>Reconnect the parts.
 3.CHECK GROUND CONNECTION
- Turn ignition switch OFF.
- 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
- Disconnect mass air flow (MAF) sensor harness connector.
- Turn ignition switch ON.
- Check the voltage between MAF sensor harness connector and ground.
DTC
| MAF sensor
| Ground
| Voltage
| Bank
| Connector
| Terminal
| P0102, P0103
| 1
| F15
| 5
| Ground
| Battery voltage
| P010C, P010D
| 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
- Turn ignition switch OFF.
- Disconnect ECM harness connector.
- Check the continuity between MAF sensor harness connector and ECM harness connector.
DTC
| MAF sensor
| ECM
| Continuity
| Bank
| Connector
| Terminal
| Connector
| Terminal
| P0102, P0103
| 1
| F15
| 4
| F101
| 22
| Existed
| P010C, P010D
| 2
| F31
| 4
| 19
|
- 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
- Check the continuity between MAF sensor harness connector and ECM harness connector.
DTC
| MAF sensor
| ECM
| Continuity
| Bank
| Connector
| Terminal
| Connector
| Terminal
| P0102, P0103
| 1
| F15
| 3
| F101
| 47
| Existed
| P010C, P010D
| 2
| F31
| 3
| 31
|
- 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 MASS AIR FLOW SENSOR
 9.CHECK INTERMITTENT INCIDENT
|