Evap Temp Sensor Shorted (Active) - Chrysler Town and Country 2003 Owner's Manual

Symptom:

EVAP TEMP SENSOR SHORTED (ACTIVE)

When Monitored and Set Condition:
EVAP TEMP SENSOR SHORTED (ACTIVE)
When Monitored: With the ignition on and the IOD fuse installed. Also, during the
Cooldown Test.
Set Condition: This DTC is displayed if the ATC detects an abnormally low voltage on the
evaporator temperature sensor signal. Evap Temp Sensor Shorted is also displayed as a
Cooldown Test Message if the ATC detects an abnormally low voltage on the evaporator
temperature sensor signal during the Cooldown Test.
EVAPORATOR TEMPERATURE SENSOR
EVAPORATOR TEMPERATURE SENSOR SIGNAL CIRCUIT SHORT TO GROUND
EVAPORATOR TEMPERATURE SENSOR SIGNAL CIRCUIT SHORT TO SENSOR GROUND CIR-
CUIT
ATC
TEST
1 Turn the ignition off.
Disconnect the in-line C202 harness connector.
Turn the ignition on.
With the DRBIII in Automatic Temperature Control, monitor Active DTCs.
Does the DRBIII display: Evap Sensor Open?
Yes → Check the Evap Temp Sensor Signal circuit between the in-line
No
2 Turn the ignition off.
Disconnect the ATC C2 harness connector.
Disconnect the in-line C202 harness connector.
Measure the resistance between ground and the Evaporator Temperature Sensor
Signal circuit (HVAC side).
Is the resistance above 100k ohms?
Yes → Go To 3
No
AUTOMATIC TEMPERATURE CONTROL
POSSIBLE CAUSES
ACTION
C202 harness connector (plenum side) and the Evap Temp Sensor
for a short to ground. Repair as necessary. If Ok, replace the
Evaporator Temperature Sensor.
With the DRBIII , reset the ATC after repair is complete.
Perform BODY VERIFICATION TEST - VER 1.
→ Go To 2
→ Repair the Evaporator Temperature Sensor Signal circuit be-
tween the ATC C2 harness connector and the in-line C202
harness connector (HVAC side) for a short to ground.
With the DRBIII , reset the ATC after repair is complete.
Perform BODY VERIFICATION TEST - VER 1.
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APPLICABILITY
All
All