Rear Blend Pot Circuit Open (Active) - Mtc - Chrysler Town and Country 2003 Owner's Manual

Symptom:

REAR BLEND POT CIRCUIT OPEN (ACTIVE) - MTC

When Monitored and Set Condition:
REAR BLEND POT CIRCUIT OPEN (ACTIVE) - MTC
When Monitored: With the ignition on.
Set Condition: This DTC will set if the A/C - Heater Control Module sees voltage above
4.88 volts on the Rear Temperature Feedback Signal circuit.
5 VOLT SUPPLY CIRCUIT SHORTED TO VOLTAGE
CHECK REAR TEMPERATURE FEEDBACK SIGNAL CIRCUIT VOLTAGE
REAR TEMPERATURE FEEDBACK SIGNAL CIRCUIT OPEN
A/C - HEATER CONTROL MODULE
5 VOLT SUPPLY CIRCUIT SHORTED TO REAR TEMPERATURE FEEDBACK SIGNAL CIRCUIT
REAR TEMPERATURE RETURN CIRCUIT OPEN
REAR BLEND POTENTIOMETER
A/C - HEATER CONTROL MODULE
TEST
1 Turn the ignition off.
Disconnect the Rear Blower Rear Control Switch C2 harness connector.
Turn the ignition on.
Measure the voltage of the 5 Volt Supply circuit.
Is the voltage above 5.3 volts?
Yes → Repair the 5 Volt Supply circuit for a short to voltage.
→ Go To 2
No
2 Turn the ignition off.
Disconnect the Rear Blower Rear Control Switch C2 harness connector.
Turn the ignition on.
Measure the voltage of the Rear Temperature Feedback Signal circuit.
What voltage is present?
Above 5.1 Volts
Below 0.25 Volts
Between 0.25 & 5.1 Volts
POSSIBLE CAUSES
ACTION
Perform BODY VERIFICATION TEST - VER 1.
Repair the Rear Temperature Feedback Signal circuit for a short
to voltage.
Perform BODY VERIFICATION TEST - VER 1.
Go To 3
Go To 4
551
HEATING & A/C
APPLICABILITY
All
All