Chrysler 300M 2002 Service Manual page 2487

DRIVEABILITY - NGC
P0110-INTAKE AIR TEMPERATURE SENSOR STUCK —
TEST
2 Turn the ignition off.
Disconnect the IAT Sensor harness connector.
NOTE: Visually inspect both the component and the PCM connectors. Look
for damaged, partially broken wires, and backed out or corroded terminals.
Ignition on, engine not running.
Measure the voltage on the IAT Sensor Signal circuit in the IAT Sensor harness
connector.
Is the voltage above 5.2 volts?
Yes → Repair the short to battery voltage in the IAT Sensor Signal
→ Go To 3
No
3 Turn the ignition off.
Disconnect the IAT Sensor harness connector.
Ignition on, engine not running.
With the DRBIII , read the IAT voltage.
Is the voltage above 4.6 volts?
Yes → Go To 4
→ Go To 7
No
4 Turn the ignition off.
Disconnect the IAT Sensor harness connector.
Using a jumper wire, jumper across the IAT Sensor harness connector.
Ignition on, engine not running.
With the DRBIII , read the IAT voltage.
Is the voltage below 1.0 volt?
Yes → Replace the IAT Sensor.
→ Go To 5
No
5 Turn the ignition off.
Disconnect the IAT Sensor harness connector.
Disconnect the PCM harness connector.
CAUTION: DO NOT PROBE THE PCM HARNESS CONNECTORS. PROBING
THE PCM HARNESS CONNECTORS WILL DAMAGE THE PCM TERMI-
NALS RESULTING IN POOR TERMINAL TO PIN CONNECTION. INSTALL
MILLER SPECIAL TOOL #8815 TO PERFORM DIAGNOSIS.
Measure the resistance of the IAT Sensor Signal circuit from the IAT Sensor harness
connector to the appropriate terminal of special tool #8815.
Is the resistance below 5.0 ohms?
Yes → Go To 6
→ Repair the open in the IAT Sensor Signal circuit.
No
ACTION
circuit.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
58
Continued
APPLICABILITY
All
All
All
All