Chrysler 300/300 Touring/300C, Dodge Magnum. Manual — part 2280
6.
CHECK (C850) BLOWER SWITCH POSITION SIGNAL CIRCUIT FOR AN OPEN
Measure the resistance of the (C850) Blower Switch Position Signal cir-
cuit between the A/C Heater Control C1 harness connector and the A/C
Heater Control C3 harness connector.
Is the resistance below 5.0 ohms?
Yes
>> Replace the A/C Heater Control in accordance with the Ser-
vice Information. Run the Cooldown Test again after the
repair is complete.
Perform BODY VERIFICATION TEST – VER 1. (Refer to 8
-
ELECTRICAL/ELECTRONIC
CONTROL
MODULES/
FRONT CONTROL MODULE - DIAGNOSIS AND TEST-
ING)
No
>> Repair the (C850) Blower Switch Position Signal circuit for
an open. Run the Cooldown Test again after the repair is
complete.
Perform BODY VERIFICATION TEST – VER 1. (Refer to 8
-
ELECTRICAL/ELECTRONIC
CONTROL
MODULES/
FRONT CONTROL MODULE - DIAGNOSIS AND TEST-
ING).
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HVAC - ELECTRICAL DIAGNOSTICS
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B10AC–RIGHT BLEND DOOR CONTROL CIRCUIT OPEN (ATC)
For a complete wiring diagram Refer to Section 8W.
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HVAC - ELECTRICAL DIAGNOSTICS
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•
When Monitored:
When actuator movement is requested.
•
Set Condition:
If the (C252) Right Blend Door Driver circuit or the (C52) Right Blend Door Common Driver circuit is open.
Possible Causes
(C252) RIGHT BLEND DOOR DRIVER CIRCUIT OPEN
(C52) RIGHT BLEND DOOR COMMON DRIVER CIRCUIT OPEN
RIGHT BLEND DOOR ACTUATOR
A/C HEATER CONTROL
Diagnostic Test
1.
CHECK FOR ACTIVE CONTROL CIRCUIT/PERFORMANCE DTCs
Turn the ignition on.
With the scan tool, read active HVAC DTCs.
Does the scan tool display any active: XXXX CONTROL CIRCUIT/PERFORMANCE DTCs?
Yes
>> Diagnose and repair the DTC(s). Refer to the Table of Contents in this Section for a complete list of all
HVAC related symptoms.
No
>> Go To 2
2.
CHECK THE RIGHT BLEND DOOR ACTUATOR CIRCUIT RESISTANCE
Turn the ignition off.
Disconnect the A/C Heater Control C2 harness connector.
Measure the resistance between the (C252) Right Blend Door Driver
circuit and the (C52) Right Blend Door Common Driver circuit in the
A/C Heater Control C2 harness connector.
Is the resistance above 70.0 ohms?
Yes
>> Go To 3
No
>> Replace the A/C Heater Control in accordance with the Ser-
vice Information.
Perform BODY VERIFICATION TEST – VER 1. (Refer to 8
-
ELECTRICAL/ELECTRONIC
CONTROL
MODULES/
FRONT CONTROL MODULE - DIAGNOSIS AND TEST-
ING).
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HVAC - ELECTRICAL DIAGNOSTICS
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3.
CHECK THE (C252) RIGHT BLEND DOOR DRIVER CIRCUIT FOR AN OPEN
Disconnect the Right Blend Door Actuator harness connector.
Measure the resistance of the (C252) Right Blend Door Driver circuit
between the Right Blend Door Actuator harness connector and the A/C
Heater Control C2 harness connector.
Is the resistance below 5.0 ohms?
Yes
>> Go To 4
No
>> Repair the (C252) Right Blend Door Driver circuit for an
open.
Perform BODY VERIFICATION TEST – VER 1. (Refer to 8
-
ELECTRICAL/ELECTRONIC
CONTROL
MODULES/
FRONT CONTROL MODULE - DIAGNOSIS AND TEST-
ING).
4.
CHECK THE (C52) RIGHT BLEND DOOR COMMON DRIVER CIRCUIT FOR AN OPEN
Measure the resistance of the (C52) Right Blend Door Common Driver
circuit between the Right Blend Door Actuator harness connector and
the A/C Heater Control C2 harness connector.
Is the resistance below 5.0 ohms?
Yes
>> Replace the Right Blend Door Actuator in accordance with
the Service Information.
Perform BODY VERIFICATION TEST – VER 1. (Refer to 8
-
ELECTRICAL/ELECTRONIC
CONTROL
MODULES/
FRONT CONTROL MODULE - DIAGNOSIS AND TEST-
ING).
No
>> Repair the (C52) Right Blend Door Common Driver circuit
for an open.
Perform BODY VERIFICATION TEST – VER 1. (Refer to 8
-
ELECTRICAL/ELECTRONIC
CONTROL
MODULES/
FRONT CONTROL MODULE - DIAGNOSIS AND TEST-
ING).
LX
HVAC - ELECTRICAL DIAGNOSTICS
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