Specifications

TEST ACTION APPLICABILITY
2 Turn the ignition off.
Disconnect the IAT Sensor harness connector.
Disconnect the ECM harness connectors.
Remove the Engine Control Relay.
Connect a jumper wire between cavity 30 and cavity 87 of the Engine Control Relay
connector.
Turn the ignition on.
Measure the voltage on the IAT Sensor Signal circuit.
Is the voltage below 1.0 volt?
All
Yes → Go To 3
No → Repair the Intake Air Temperature Sensor Signal circuit for a
short to voltage.
Perform ROAD TEST VERIFICATION - VER-2.
NOTE: Remove the jumper wire.
3 Turn the ignition off.
Disconnect the ECM harness connectors.
Disconnect the IAT Sensor harness connector.
Measure the resistance of the Intake Air Temperature Sensor Signal circuit.
Is the resistance below 10.0 ohms?
All
Yes → Go To 4
No → Repair the Intake Air Temperature Sensor Signal circuit for an
open.
Perform ROAD TEST VERIFICATION - VER-2.
4 Turn the ignition off.
Disconnect the IAT Sensor harness connector.
Disconnect the ECM harness connectors.
Measure the resistance of the Sensor Ground circuit between the ECM harness
connector and the IAT Sensor harness connector.
Is the resistance below 10.0 ohms?
All
Yes → Replace and program the Engine Control Module in accordance
with the Service Information.
Perform ROAD TEST VERIFICATION - VER-2.
No → Repair the Intake Air Temperature Sensor Ground circuit for an
open.
Perform ROAD TEST VERIFICATION - VER-2.
35
DRIVEABILITY - DIESEL
P0110-INTAKE AIR TEMP SENSOR SIGNAL VOLTAGE TOO HIGH —
Continued