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DTC Diagnosis Procedure
1.CHECK DTC PRIORITY
If DTC P0103 is displayed with DTC P06B0, first perform the trouble diagnosis for DTC P06B0.
Is applicable DTC detected?
Perform diagnosis of applicable. Refer to DTC Description.
.
 
2.CHECK HARNESS CONNECTOR
  1. Disconnect MAF sensor harness connector and ECM harness connector.
  2. Connect MAF sensor harness connector and ECM harness connector.
  3. Perform DTC Confirmation Procedure. DTC Description
Is DTC detected?
.
INSPECTION END
 
3.CHECK MAF SENSOR POWER SUPPLY
  1. Turn ignition switch OFF.
  2. Disconnect mass air flow (MAF) sensor harness connector.
  3. Turn ignition switch ON.
  4. Check the voltage between MAF sensor harness connector and ground.
    +−Voltage
    MAF sensor
    ConnectorTerminal
    F221Ground5 V
Is the inspection result normal?
.
Perform the trouble diagnosis for power supply circuit.
 
4.CHECK MAF SENSOR GROUND CIRCUIT
  1. Turn ignition switch OFF.
  2. Disconnect ECM harness connector.
  3. Check the continuity between MAF sensor harness connector and ECM harness connector.
    +−Continuity
    MAF sensorECM
    ConnectorTerminalConnectorTerminal
    F223F5150Existed
Is the inspection result normal?
.
Repair or replace error-detected parts.
 
5.CHECK MAF SENSOR INPUT SIGNAL CIRCUIT
  1. Check the continuity between MAF sensor harness connector and ECM harness connector.
    +−Continuity
    MAF sensorECM
    ConnectorTerminalConnectorTerminal
    F222F5147Existed
  2. Also check harness for short to ground and to power.
Is the inspection result normal?
.
Repair open circuit or short to ground or short to power in harness or connectors.
 
6.CHECK MAF SENSOR
Check the MAF sensor. Refer to Component Inspection.
Is the inspection result normal?
Check intermittent incident. Refer to Intermittent IncidentIntermittent Incident.
Replace mass air flow sensor. Refer to Exploded View.