[Previous][Next]
DTC Diagnosis Procedure
1.CHECK INTAKE AIR TEMPERATURE SENSOR POWER SUPPLY
  1. Turn ignition switch OFF.
  2. Disconnect mass air flow sensor (with intake air temperature sensor) harness connector.
  3. Turn ignition switch ON.
  4. Check the voltage between mass air flow sensor harness connector and ground.
    +−Voltage
    (Approx.)
    MAF sensor
    ConnectorTerminal
    F224Ground5 V
Is the inspection result normal?
.
.
 
2.CHECK INTAKE AIR TEMPERATURE SENSOR POWER SUPPLY CIRCUIT
  1. Turn ignition switch OFF.
  2. Disconnect ECM harness connector.
  3. Check the continuity between mass air flow sensor harness connector and ECM harness connector.
    +−Continuity
    MAF sensorECM
    ConnectorTerminalConnectorTerminal
    F224F5134Existed
  4. Also check harness for short to ground.
Is the inspection result normal?
Perform the trouble diagnosis for power supply circuit.
Repair or replace error-detected parts.
 
3.CHECK INTAKE AIR TEMPERATURE SENSOR GROUND CIRCUIT
  1. Turn ignition switch OFF.
  2. Disconnect ECM harness connector.
  3. Check the continuity between mass air flow sensor harness connector and ECM harness connector.
    +−Continuity
    MAF sensorECM
    ConnectorTerminalConnectorTerminal
    F223F5150Existed
  4. Also check harness for short to power.
Is the inspection result normal?
.
Repair or replace error-detected parts.
 
4.CHECK INTAKE AIR TEMPERATURE SENSOR
Check the intake air temperature sensor. Refer to Component Inspection.
Is the inspection result normal?
Check intermittent incident. Refer to Intermittent IncidentIntermittent Incident.
Replace mass air flow sensor (with intake air temperature sensor). Refer to Removal and Installation.