Diagnostic ProcedureNJEC0070
1 CHECK POWER SUPPLY (Models with intake air temperature sensor in mass air flow sensor)
1. Turn ignition switch ªOFFº.
2. Disconnect mass air flow sensor harness connector.
JEF105Y
3. Turn ignition switch ªONº.
4. Check voltage between terminal 5 and ground with CONSULT-II or tester.
SEC503C
OK or NG
OK©GO TO 3.
NG©GO TO 2.
2 DETECT MALFUNCTIONING PART
Check the following.
+Harness for open or short between ECM and intake air temperature sensor
©Repair harness or connectors.
3 CHECK GROUND CIRCUIT
1. Turn ignition switch ªOFFº.
2. Check harness continuity between intake air temperature sensor harness connector terminal 2 and engine ground.
Refer to wiring diagram.
Continuity should exist.
3. Also check harness for short to ground and short to power.
OK or NG
OK©GO TO 5.
NG©GO TO 4.
4 DETECT MALFUNCTIONING PART
Check the following.
+Harness for open or short between ECM and intake air temperature sensor
©Repair open circuit or short to ground or short to power in harness or connectors.
DTC P0110 INTAKE AIR TEMPERATURE SENSORQG
Diagnostic Procedure
EC-161
5 CHECK INTAKE AIR TEMPERATURE SENSOR
Refer to ªComponent Inspectionº, EC-163.
OK or NG
OK©GO TO 6.
NG©Replace intake air temperature sensor.
6 CHECK INTERMITTENT INCIDENT
Perform ªTROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENTº, EC-144.
©INSPECTION END
SEC516C
Component InspectionNJEC0071INTAKE AIR TEMPERATURE SENSORNJEC0071S01Check resistance between mass air flow sensor harness connec-
tor terminals 3 and 5.
Intake air temperature
ÉC (ÉF)Resistance kW
25 (77) 1.9 - 2.1
If NG, replace intake air temperature sensor.
DTC P0110 INTAKE AIR TEMPERATURE SENSORQG
Diagnostic Procedure (Cont'd)
EC-162
