Chrysler Town and Country 2003 Owner's Manual page 256

AUTOMATIC TEMPERATURE CONTROL
Symptom:
INVALID CONDITIONS FOR COOLDOWN TEST, EVAP TEMPERA-
TURE TOO LOW
When Monitored and Set Condition:
INVALID CONDITIONS FOR COOLDOWN TEST, EVAP TEMPERATURE TOO
LOW
When Monitored: When executing the Cooldown Test.
Set Condition: This message will be displayed if the A/C - Heater Control Module sees
evaporator temperature below 12.7°C (55°F) when executing the Cooldown Test.
EVAPORATOR TEMPERATURE TOO LOW
ATC DTC(S) PRESENT
CHECK THE PCM/ECM FOR DTCS
EVAPORATOR TEMPERATURE SENSOR
SENSOR GROUND CIRCUIT HIGH RESISTANCE
EVAPORATOR TEMPERATURE SENSOR SIGNAL CIRCUIT HIGH RESISTANCE
AUTOMATIC TEMPERATURE CONTROL
TEST
1 CAUTION: The work area ambient temperature must be above 15.6°C (60°F)
to test A/C system operation.
Start the engine.
Turn the A/C off.
Turn the Blower on high. Allow the blower to run for 5 minutes to ensure that the
Evaporator Temperature Sensor temperature is above 12.7°C (55°F).
With the DRBIII , actuate the Cooldown Test.
Does the DRBIII display: Cooldown Test Too Cold To Start?
Yes → Go To 2
→ Perform additional testing as necessary.
No
2 CAUTION: The work area ambient temperature must be above 15.6°C (60°F)
to test A/C system operation.
Turn the ignition on.
With the DRBIII , read ATC DTCs.
Does the DRBIII display any ATC DTCs?
Yes → Return to the symptom list and choose the symptom(s). After the
→ Go To 3
No
POSSIBLE CAUSES
ACTION
Perform BODY VERIFICATION TEST - VER 1.
repair is complete, with the DRBIII , erase the DTC(s). Cycle the
ignition switch. With the DRBIII , reset the ATC. With the
DRBIII , actuate the Cooldown Test.
Perform BODY VERIFICATION TEST - VER 1.
232
APPLICABILITY
All
All