Chrysler Town and Country 2003 Owner's Manual page 344

CABIN HEATER
*CABIN HEATER INOPERABLE FROM A/C - HEATER MODULE (MTC) —
Continued
TEST
3 WARNING: DO NOT OPERATE THE DCHA IN AN ENCLOSED AREA SUCH
AS A GARAGE THAT DOES NOT HAVE EXHAUST VENTILATION FACILI-
TIES. ALWAYS VENT THE DCHA's EXHAUST WHEN OPERATING THE
DCHA. FAILURE TO FOLLOW THESE INSTRUCTIONS MAY RESULT IN
PERSONAL INJURY OR DEATH.
Turn the ignition on.
With the DRBIII , check for FCM and HVAC DTCs.
Does the DRBIII display any FCM or HVAC DTCs?
Yes → For FCM DTCs, return to the symptom list and choose the
→ Go To 4
No
4 WARNING: DO NOT OPERATE THE DCHA IN AN ENCLOSED AREA SUCH
AS A GARAGE THAT DOES NOT HAVE EXHAUST VENTILATION FACILI-
TIES. ALWAYS VENT THE DCHA's EXHAUST WHEN OPERATING THE
DCHA. FAILURE TO FOLLOW THESE INSTRUCTIONS MAY RESULT IN
PERSONAL INJURY OR DEATH.
Start the engine.
Allow the engine to idle.
Turn the A/C - Heater Control Module's Power switch on.
Turn the Blower control to the high speed position.
CAUTION: Do not activate the Diesel Cabin Heater Test with the engine off.
Failure to follow these instructions may result in internal damage to the
DCHA Heater Module.
NOTE: Do not disconnect the vehicle's battery or the DCHA's main power
supply while the DCHA is in operation or in run-down mode. Failure to
follow these instructions may result in excess emissions from the DCHA
during heater operation.
With the DRBIII in HVAC, Systems Tests, select Diesel Cabin Heater Test and press
#1.
With the DRBIII in HVAC, Systems Tests, Diesel Cabin Heater Test, read the Cabin
Heater Status.
Does the Status display: On?
Yes → Replace the FCM in accordance with the Service Information.
→ Replace the A/C - Heater Control Module in accordance with the
No
ACTION
symptom(s). Also, refer to Ignition, Power, Accessory category for
related symptom(s). For HVAC DTCs, refer to Heater & A/C for
related symptom(s).
Perform CABIN HEATER VERIFICATION TEST - VER 1.
Perform CABIN HEATER VERIFICATION TEST - VER 1.
Service Information.
Perform CABIN HEATER VERIFICATION TEST - VER 1.
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APPLICABILITY
All
All