B1802 Power Supply Out Of Range: Voltage Above 15.5 Volts - Chrysler Town and Country 2003 Owner's Manual

CABIN HEATER
Symptom:
B1802 POWER SUPPLY OUT OF RANGE: VOLTAGE ABOVE 15.5
VOLTS
When Monitored and Set Condition:

B1802 POWER SUPPLY OUT OF RANGE: VOLTAGE ABOVE 15.5 VOLTS

When Monitored: With the engine running.
Set Condition: This DTC will set if the DCHA's power supply voltage exceeds 15.5 volts
for longer than six seconds.
VEHICLE'S CHARGING SYSTEM OVERCHARGING
DCHA CONTROL UNIT FAULT
TEST
1 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.
WARNING: ALLOW THE DCHA ASSEMBLY TO COOL BEFORE PERFORM-
ING A COMPONENT INSPECTION/REPAIR/REPLACEMENT. FAILURE TO
FOLLOW THESE INSTRUCTIONS MAY RESULT IN PERSONAL INJURY.
CAUTION: DO NOT PERFORM THIS TEST UNLESS DIRECTED HERE BY
THE CABIN HEATER PRE-TEST. ALWAYS PERFORM THE CABIN HEATER
PRE-TEST PRIOR TO PERFORMING ANY OTHER CABIN HEATER TEST
FOR THE RESULT TO BE VALID.
Check the vehicle's charging system for proper operation in accordance with the
Service Information.
Is the vehicle's charging system operating properly?
Yes → Replace the DCHA Heater Module in accordance with the Service
→ Repair the vehicle's charging system in accordance with the
No
POSSIBLE CAUSES
ACTION
Information.
Perform CABIN HEATER VERIFICATION TEST - VER 1.
Service Information.
Perform CABIN HEATER VERIFICATION TEST - VER 1.
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APPLICABILITY
All