Dodge Durango (HB). Manual — part 1460
B103B–REAR MODE DOOR CONTROL CIRCUIT LOW (ATC) (CONTINUED)
3.
CHECK (C54) REAR BLEND DOOR DRIVER CIRCUIT FOR A SHORT TO OTHER DOOR DRIVER
CIRCUIT(S)
Measure the resistance between the (C54) Rear Blend Door Driver cir-
cuit and the (C808) Common Door Driver 3 circuit, the (C32) Recircu-
lation Door Driver circuit, the (C34) Common Door Driver 1 circuit, the
(C801) Mode Door 2 Driver circuit, the (C807) Common Door Driver 2
circuit, the (C29) Mode Door 1 Driver circuit, and the (C61) Front
Blend Door Driver circuit in the A/C Heater Control C1 harness con-
nector.
Is the resistance below 10k ohms between any of the circuits?
Yes
>> Repair the circuit(s) with a resistance below 10k ohms for
a short together.
Perform BODY VERIFICATION TEST - VER 1.
No
>> Go To 4
4.
CHECK (C154) REAR COMMON DOOR DRIVER CIRCUIT FOR A SHORT TO OTHER DOOR DRIVER
CIRCUIT(S)
Measure the resistance between the (C154) Rear Common Door
Driver circuit and the (C808) Common Door Driver 3 circuit, the (C32)
Recirculation Door Driver circuit, the (C34) Common Door Driver 1 cir-
cuit, the (C801) Mode Door 2 Driver circuit, the (C807) Common Door
Driver 2 circuit, the (C29) Mode Door 1 Driver circuit, and the (C61)
Front Blend Door Driver circuit in the A/C Heater Control C1 harness
connector.
Is the resistance below 10k ohms between any of the circuits?
Yes
>> Repair the circuit(s) with a resistance below 10k ohms for
a short together.
Perform BODY VERIFICATION TEST - VER 1.
No
>> Go To 5
HB
HVAC - ELECTRICAL DIAGNOSTICS
24 - 33
B103B–REAR MODE DOOR CONTROL CIRCUIT LOW (ATC) (CONTINUED)
5.
CHECK (C808) COMMON DOOR DRIVER 3 CIRCUIT FOR A SHORT TO OTHER DOOR DRIVER
CIRCUIT(S)
Measure the resistance between the (C808) Common Door Driver 3
circuit and the (C32) Recirculation Door Driver circuit, the (C34) Com-
mon Door Driver 1 circuit, the (C807) Common Door Driver 2 circuit,
the (C29) Mode Door 1 Driver circuit, and the (C61) Front Blend Door
Driver circuit in the A/C Heater Control C1 harness connector.
Is the resistance below 10k ohms between any of the circuits?
Yes
>> Repair the circuit(s) with a resistance below 10k ohms for
a short together.
Perform BODY VERIFICATION TEST - VER 1.
No
>> Go To 6
6.
CHECK (C801) MODE DOOR 2 DRIVER CIRCUIT FOR A SHORT TO OTHER DOOR DRIVER CIRCUIT(S)
Measure the resistance between the (C801) Mode Door 2 Driver cir-
cuit and the (C32) Recirculation Door Driver circuit, the (C34) Com-
mon Door Driver 1 circuit, the (C807) Common Door Driver 2 circuit,
the (C29) Mode Door 1 Driver circuit, and the (C61) Front Blend Door
Driver circuit in the A/C Heater Control C1 harness connector.
Is the resistance below 10k ohms between any of the circuits?
Yes
>> Repair the circuit(s) with a resistance below 10k ohms for
a short together.
Perform BODY VERIFICATION TEST - VER 1.
No
>> Go To 7
24 - 34
HVAC - ELECTRICAL DIAGNOSTICS
HB
B103B–REAR MODE DOOR CONTROL CIRCUIT LOW (ATC) (CONTINUED)
7.
CHECK REAR MODE DOOR ACTUATOR CIRCUIT RESISTANCE
Measure the resistance between the (C53) Rear Mode Door Driver cir-
cuit and the (C154) Rear Common Door Driver circuit in the A/C
Heater Control C1 harness connector.
Is the resistance below 30 ohms?
Yes
>> Go To 8
No
>> Go To 9
8.
CHECK (C53) REAR MODE DOOR DRIVER CIRCUIT FOR A SHORT TO (C154) REAR COMMON DOOR
DRIVER CIRCUIT
Disconnect the Rear Mode Door Actuator harness connector.
Measure the resistance between the (C53) Rear Mode Door Driver cir-
cuit and the (C154) Rear Common Door Driver circuit in the A/C
Heater Control C1 harness connector.
Is the resistance below 10k ohms?
Yes
>> Repair the (C53) Rear Mode Door Driver circuit for a short
to the (C154) Rear Common Door Driver circuit.
Perform BODY VERIFICATION TEST - VER 1.
No
>> Replace the Rear Mode Door Actuator in accordance with
the Service Information.
Perform BODY VERIFICATION TEST - VER 1.
9.
CHECK REAR BLEND DOOR ACTUATOR CIRCUIT RESISTANCE
Measure the resistance between the (C54) Rear Blend Door Driver cir-
cuit and the (C154) Rear Common Door Driver circuit in the A/C
Heater Control C1 harness connector.
Is the resistance below 30 ohms?
Yes
>> Go To 10
No
>> Go To 11
HB
HVAC - ELECTRICAL DIAGNOSTICS
24 - 35
B103B–REAR MODE DOOR CONTROL CIRCUIT LOW (ATC) (CONTINUED)
10.
CHECK (C54) REAR BLEND DOOR DRIVER CIRCUIT FOR A SHORT TO (C154) REAR COMMON DOOR
DRIVER CIRCUIT
Disconnect the Rear Blend Door Actuator harness connector.
Measure the resistance between the (C54) Rear Blend Door Driver cir-
cuit and the (C154) Rear Common Door Driver circuit in the A/C
Heater Control C1 harness connector.
Is the resistance below 10k ohms?
Yes
>> Repair the (C54) Rear Blend Door Driver circuit for a short
to the (C154) Rear Common Door Driver circuit.
Perform BODY VERIFICATION TEST - VER 1.
No
>> Replace the Rear Blend Door Actuator in accordance with
the Service Information.
Perform BODY VERIFICATION TEST - VER 1.
11.
CHECK MODE DOOR 2 (FLOOR TO DEFROST) ACTUATOR CIRCUIT RESISTANCE
Measure the resistance between the (C801) Mode Door 2 Driver cir-
cuit and the (C808) Common Door Driver 3 circuit in the A/C Heater
Control C1 harness connector.
Is the resistance below 30 ohms?
Yes
>> Go To 12
No
>> Go To 13
12.
CHECK (C801) MODE DOOR 2 DRIVER CIRCUIT FOR A SHORT TO (C808) COMMON DOOR DRIVER 3
CIRCUIT
Disconnect the Mode Door 2 (Floor to Defrost) Actuator harness con-
nector.
Measure the resistance between the (C801) Mode Door 2 Driver cir-
cuit and the (C808) Common Door Driver 3 circuit in the A/C Heater
Control C1 harness connector.
Is the resistance below 10k ohms?
Yes
>> Repair the (C801) Mode Door 2 Driver circuit for a short to
the (C808) Common Door Driver 3 circuit.
Perform BODY VERIFICATION TEST - VER 1.
No
>> Replace the Mode Door 2 (Floor to Defrost) Actuator in
accordance with the Service Information.
Perform BODY VERIFICATION TEST - VER 1.
24 - 36
HVAC - ELECTRICAL DIAGNOSTICS
HB
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