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DRIVEABILITY - GAS
Symptom:
P1192-INLET AIR TEMP SENSOR VOLTAGE LOW
When Monitored and Set Condition:
P1192-INLET AIR TEMP SENSOR VOLTAGE LOW
When Monitored: With the ignition on and battery voltage greater than 10.4 volts.
Set Condition: The Inlet Air Temperature (IAT) sensor circuit voltage at the PCM goes
below 0.8 volt.
IAT SENSOR VOLTAGE BELOW 1.0 VOLT
IAT SENSOR INTERNAL FAILURE
(K21) IAT SENSOR SIGNAL CIRCUIT SHORTED TO GROUND
(K21) IAT SENSOR SIGNAL SHORTED TO (K4) SENSOR GROUND CIRCUIT
PCM
TEST
1
Turn the ignition on.
With the DRBIII , read the IAT voltage.
Is the voltage below 1.0 volt?
Yes → Go To 2
→ Refer to the INTERMITTENT CONDITION symptom in the
No
2
Turn the ignition off.
Disconnect the IAT harness connector.
Turn the ignition on.
With the DRBIII , read IAT voltage.
Is the voltage above 1.0 volt?
Yes → Replace the IAT Sensor.
→ Go To 3
No
3
Turn the ignition off.
Disconnect the IAT Sensor harness connector.
Disconnect the PCM harness connector.
Measure the resistance of the IAT Sensor Signal circuit between the IAT Sensor
harness connector and ground.
Is the resistance below 100 ohms?
Yes → Repair the short to ground in the (K21) IAT Sensor Signal circuit.
→ Go To 4
No
POSSIBLE CAUSES
ACTION
Driveability category.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
164
APPLICABILITY
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