Chrysler Town and Country 2003 Owner's Manual page 325

B1813 HEATER IN LOCKOUT MODE —
TEST
2
WARNING: DO NOT OPERATE THE DCHA IN AN ENCLOSED AREA SUCH AS A
GARAGE THAT DOES NOT HAVE EXHAUST VENTILATION FACILITIES. AL-
WAYS VENT THE DCHA's EXHAUST WHEN OPERATING THE DCHA. FAILURE
TO FOLLOW THESE INSTRUCTIONS MAY RESULT IN PERSONAL INJURY OR
DEATH.
NOTE: The DCHA Control will store up to three DTCs in its memory.
NOTE: If the DCHA Control detects a new fault in the DCHA system, one that is
not already stored in its memory, the DCHA Control will clear the oldest of the
three stored DTCs, and it will store the new fault's DTC.
NOTE: If the DCHA control detects a reoccurrence of a stored fault, the DCHA
control will overwrite that fault's DTC with the most recent occurrence.
Turn the ignition on.
On MTC, set the Blend control to the max cool position.
On ATC, set the Driver temperature control to LO (max cool).
Turn the ATC's or MTC's Power switch off.
With the DRBIII , record and erase Cabin Heater DTCs.
Start the engine.
Allow the engine to idle.
Turn the ATC's or MTC's Power switch on.
Turn the Blower control to the high speed position.
CAUTION: Do not activate the DCHA Field Mode 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 Cabin Heater, Systems Tests, select Field Mode and press Enter. The
test will run for approx 8.5 minutes.
On MTC, set the Blend control to the max heat position. Upon completion of the Field
Mode Test, proceed as follows:
On ATC, set the Driver temperature control to HI (max heat). Upon completion of the Field
Mode Test, proceed as follows:
With the DRBIII , read Cabin Heater and Active FCM DTCs.
Turn the Blower control off and turn the ATC's or MTC's Power switch off.
Turn the engine off.
Are any DTCs present?
Yes, B1813 & Other DTC(s) Present
Yes, B1813 Reset with No Other DTC(s)
Yes, B1813 Cleared, Other DTC(s) Present
→ Allow DCHA to cool. Inspect fuel line & coolant hoses for restric-
No
ACTION
Return to the symptom list and choose the additional DTC(s) first,
then diagnose B1813.
Perform CABIN HEATER VERIFICATION TEST - VER 1.
Allow DCHA to cool. Inspect DCHA intake & exhaust pipes for
restrictions & obstructions. Repair as necessary. After repair,
repeat Test 2 of this procedure. If intake & exhaust pipes are Ok,
replace DCHA Heater Module in accordance with Service Info.
Perform CABIN HEATER VERIFICATION TEST - VER 1.
Return to the symptom list and choose the DTC(s).
Perform CABIN HEATER VERIFICATION TEST - VER 1.
tions, obstructions, loose clamps, leakage, etc. Repair as neces-
sary. Check connectors. Clean & repair as necessary. Refer to
Service Manual for additional symptom diagnosis, if necessary.
Perform CABIN HEATER VERIFICATION TEST - VER 1.
Continued
301
CABIN HEATER
APPLICABILITY
All