Chrysler 300/300 Touring/300C, Dodge Magnum. Manual — part 2305
14.
CHECK THE (C252) RIGHT BLEND DOOR DRIVER CIRCUIT FOR A SHORT TO THE (C52) RIGHT
BLEND DOOR COMMON DRIVER CIRCUIT
Disconnect the Right Blend Door Actuator 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 below 10k ohms?
Yes
>> Repair the (C252) Right Blend Door Driver circuit for a
short to the (C52) Right Blend Door Common Driver circuit.
Perform BODY VERIFICATION TEST – VER 1. (Refer to 8
-
ELECTRICAL/ELECTRONIC
CONTROL
MODULES/
FRONT CONTROL MODULE - DIAGNOSIS AND TEST-
ING).
No
>> 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).
15.
CHECK THE RECIRCULATION DOOR ACTUATOR CIRCUIT RESISTANCE
Measure the resistance between the (C268) Recirculation Door Driver
circuit and the (C68) Recirculation Door Common Driver circuit in the
A/C Heater Control C2 harness connector.
Is the resistance below 30.0 ohms?
Yes
>> Go To 16
No
>> Go To 17
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HVAC - ELECTRICAL DIAGNOSTICS
LX
16.
CHECK THE (C268) RECIRCULATION DOOR DRIVER CIRCUIT FOR A SHORT TO THE (C68)
RECIRCULATION DOOR COMMON DRIVER CIRCUIT
Disconnect the Recirculation Door Actuator harness connector.
Measure the resistance between the (C268) Recirculation Door Driver
circuit and the (C68) Recirculation Door Common Driver circuit in the
A/C Heater Control C2 harness connector.
Is the resistance below 10k ohms?
Yes
>> Repair the (C268) Recirculation Door Driver circuit for a
short to the (C68) Recirculation Door Common Driver cir-
cuit.
Perform BODY VERIFICATION TEST – VER 1. (Refer to 8
-
ELECTRICAL/ELECTRONIC
CONTROL
MODULES/
FRONT CONTROL MODULE - DIAGNOSIS AND TEST-
ING).
No
>> Replace the Recirculation 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).
17.
RUN THE ACTUATOR CALIBRATION TEST
Reconnect the A/C Heater Control C2 harness connector.
Reconnect the all of the Door Actuator harness connectors.
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 Calibration Test. When the test is complete, select
View DTCs.
Does the scan tool only display: B1040–PANEL MODE DOOR 1 CONTROL CIRCUIT/PERFORMANCE?
Yes
>> Replace the A/C Heater Control in accordance with the Service Information.
Perform BODY VERIFICATION TEST – VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL
MODULES/FRONT CONTROL MODULE - DIAGNOSIS AND TESTING).
No, Other DTC(s) Displayed
Diagnose and repair the other DTC(s). Refer to the Table of Contents 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. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL
MODULES/FRONT CONTROL MODULE - DIAGNOSIS AND TESTING).
LX
HVAC - ELECTRICAL DIAGNOSTICS
24 - 255
B1043–PANEL MODE DOOR 1 CONTROL CIRCUIT OPEN (ATC)
For a complete wiring diagram Refer to Section 8W.
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HVAC - ELECTRICAL DIAGNOSTICS
LX
•
When Monitored:
When actuator movement is requested.
•
Set Condition:
If the (C266) Mode Door Driver circuit or the (C66) Mode Door Common Driver circuit is open.
Possible Causes
(C266) MODE DOOR DRIVER CIRCUIT OPEN
(C66) MODE DOOR COMMON DRIVER CIRCUIT OPEN
MODE 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 MODE DOOR ACTUATOR CIRCUIT RESISTANCE
Turn the ignition off.
Disconnect the A/C Heater Control C2 harness connector.
Measure the resistance between the (C266) Mode Door Driver circuit
and the (C66) Mode 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).
LX
HVAC - ELECTRICAL DIAGNOSTICS
24 - 257
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