Dodge Durango (HB). Manual — part 1495
B1041–PANEL MODE DOOR 1 CONTROL CIRCUIT LOW (MTC) (CONTINUED)
2.
CHECK (C29) MODE DOOR 1 DRIVER CIRCUIT FOR A SHORT TO OTHER DOOR DRIVER CIRCUITS
Measure the resistance between the (C29) Mode Door 1 Driver circuit
and the (C61) Front Blend Door Driver circuit, the (C801) Mode Door 2
Driver circuit, the (C32) Recirculation Door Driver circuit, and, if
equipped, the (C53) Rear Mode Door Driver circuit, the (C154) Rear
Common Door Driver circuit, and the (C54) Rear Blend Door Driver
circuit in the A/C Heater Control C1 harness connector.
Is the resistance below 10k ohms between the (C29) Mode Door
1 Driver circuit and any of the other door driver circuits?
Yes
>> Repair the circuit(s) with a resistance below 10k ohms for
a short to the (C29) Mode Door 1 Driver circuit.
Perform BODY VERIFICATION TEST - VER 1.
No
>> Go To 3
3.
CHECK MODE DOOR 1 (FLOOR TO PANEL) ACTUATOR CIRCUIT RESISTANCE
Measure the resistance between the (C29) Mode Door 1 Driver circuit
and the (C34) Front Common Door Driver circuit in the A/C Heater
Control C1 harness connector.
Is the resistance below 30 ohms?
Yes
>> Go To 4
No
>> Go To 5
HB
HVAC - ELECTRICAL DIAGNOSTICS
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B1041–PANEL MODE DOOR 1 CONTROL CIRCUIT LOW (MTC) (CONTINUED)
4.
CHECK (C29) MODE DOOR 1 DRIVER CIRCUIT FOR A SHORT TO (C34) FRONT COMMON DOOR
DRIVER CIRCUIT
Disconnect the Mode Door 1 (Floor to Panel) Actuator harness con-
nector.
Measure the resistance between the (C29) Mode Door 1 Driver circuit
and the (C34) Front Common Door Driver circuit in the A/C Heater
Control C1 harness connector.
Is the resistance below 10k ohms?
Yes
>> Repair the (C29) Mode Door 1 Driver circuit for a short to
the (C34) Front Common Door Driver circuit.
Perform BODY VERIFICATION TEST - VER 1.
No
>> Replace the Mode Door 1 (Floor to Panel) Actuator in
accordance with the Service Information.
Perform BODY VERIFICATION TEST - VER 1.
5.
RUN THE ACTUATOR DTC DETECTION TEST
Reconnect the A/C Heater Control C1 harness connector.
Turn the ignition on.
With the scan tool, erase HVAC DTCs.
Turn the ignition off, wait 10 seconds, and then turn the ignition on.
With the scan tool, select System Tests and then select Actuator DTC Detection. When the test is complete, select
View DTCs.
Does the scan tool only display: B1041–PANEL MODE DOOR 1 CONTROL CIRCUIT LOW?
Yes
>> Replace the A/C Heater Control in accordance with the Service Information.
Perform BODY VERIFICATION TEST - VER 1.
No, Other DTC(s) Displayed
Diagnose and repair the other DTC(s). If multiple DTCs are present, beginning with the common cir-
cuits, diagnose and repair all short high DTCs and then all short low DTCs. Refer to the Table of Con-
tents in this Section for a complete list of all HVAC related symptoms.
No, And No Other DTCs Displayed
Using the wiring diagram as a guide, inspect the wiring and connectors for conditions causing an inter-
mittent short. Repair as necessary.
Perform BODY VERIFICATION TEST - VER 1.
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HVAC - ELECTRICAL DIAGNOSTICS
HB
B1042–PANEL MODE DOOR 1 CONTROL CIRCUIT HIGH (ATC)
HB
HVAC - ELECTRICAL DIAGNOSTICS
24 - 175
B1042–PANEL MODE DOOR 1 CONTROL CIRCUIT HIGH (ATC) (CONTINUED)
For the Automatic Temperature Control (ATC) circuit diagram (Refer to 24 - HEATING & AIR CONDITIONING -
SCHEMATICS AND DIAGRAMS).
For a complete wiring diagram Refer to Section 8W.
•
When Monitored:
When the Actuator DTC Detection Test is executed.
•
Set Condition:
If the (C29) Mode Door 1 Driver circuit is shorted to voltage.
Possible Causes
(C29) MODE DOOR 1 DRIVER CIRCUIT SHORTED TO VOLTAGE
A/C HEATER CONTROL
Theory of Operation
The A/C Heater Control drives the Mode Door 1 (Floor to Panel) Actuator via the (C29) Mode Door 1 Driver circuit
and the (C807) Common Door Driver 2 circuit. The Mode Door 1 (Floor to Panel) Actuator does not share the
(C807) Common Door Driver 2 circuit or its driver inside the A/C Heater Control with any other actuator.
Diagnostic Test
1.
CHECK (C29) MODE DOOR 1 DRIVER CIRCUIT FOR A SHORT TO VOLTAGE
Turn the ignition off.
Disconnect the A/C Heater Control C1 harness connector.
Turn the ignition on.
Measure the voltage of the (C29) Mode Door 1 Driver circuit.
Is the voltage above 0.2 volts?
Yes
>> Repair the (C29) Mode Door 1 Driver circuit for a short to
voltage.
Perform BODY VERIFICATION TEST - VER 1.
No
>> Go To 2
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HVAC - ELECTRICAL DIAGNOSTICS
HB
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