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Diagnostic Procedure
NFEC0856
1 CHECK INTAKE AIR TEMPERATURE SENSOR POWER SUPPLY CIRCUIT
1. Turn ignition switch “OFF”.
2. Disconnect intake air temperature sensor harness connector.
SEC055D
3. Turn ignition switch “ON”.
4. Check voltage between terminal 1 and ground.
SEC104D
OK or NG
OK © GO TO 3.
NG © GO TO 2.
2 DETECT MALFUNCTIONING PART
Check harness for open or short between ECM and intake air temperature sensor.
© Repair harness or connectors.
3 CHECK INTAKE AIR TEMPERATURE SENSOR GROUND CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch “OFF”.
2. Check harness continuity between sensor terminal 3 and engine ground.
Refer to Wiring Diagram.
Continuity should exist.
3. Also check harness for short to power.
OK or NG
OK © GO TO 5.
NG © GO TO 4.
4 DETECT MALFUNCTIONING PART
Check harness for open between ECM and intake air temperature sensor.
© Repair open circuit or short to power in harness or connectors.
GI
MA
EM
LC
FE
CL
MT
AT
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
DTC P0112, P0113 IAT SENSOR
Diagnostic Procedure
EC-205
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