Dodge Nitro. Manual — part 715
Fig. 52: Blend Door Control Circuit Schematic
Courtesy of CHRYSLER LLC
For complete wiring diagrams refer to SYSTEM WIRING DIAGRAMS article.
The A/C Heater Control drives the Left Blend Door Actuator via the (C54) Left Blend Door Driver circuit and
2007 Dodge Nitro R/T
2007 HVAC Heating & Air Conditioning - Electrical Diagnostics - Nitro
the (C154) Common Door Driver circuit.
When Monitored:
With the ignition on.
Set Condition:
If the Left Blend Door Actuator's electrical circuit is open.
Diagnostic Test
1) ACTIVE DTC(S) PRESENT
Turn the ignition on.
Using the A/C Heater Control, actuate the Left Blend Door.
With the scan tool, check for DTCs.
Does the scan tool display this DTC as active?
Yes
Go to 2).
No
The condition that caused this symptom is currently not present. Check for an intermittent
condition by inspecting the related wiring harness for chafed, pierced, pinched, and partially broken
wires. Also, inspect the related connectors for broken, bent, pushed out, spread, corroded, or
contaminated terminals. Repair as necessary.
Perform BODY VERIFICATION TEST - VER 1 .
2) CHECK (C154) COMMON DOOR DRIVER CIRCUIT FOR AN OPEN
Possible Causes
(C54) DRIVER BLEND DOOR DRIVER CIRCUIT OPEN
(C154) COMMON DOOR DRIVER CIRCUIT OPEN
LEFT BLEND DOOR ACTUATOR
A/C HEATER CONTROL
2007 Dodge Nitro R/T
2007 HVAC Heating & Air Conditioning - Electrical Diagnostics - Nitro
Fig. 53: Measuring Resistance Of (C154) Common Door Driver Circuit Between A/C Heater
Control C1 Harness Connector And Left Blend Door Actuator Harness Connector
Courtesy of CHRYSLER LLC
Turn the ignition off.
Disconnect the A/C Heater Control C1 harness connector.
Disconnect the Left Blend Door Actuator harness connector.
Measure the resistance of the (C154) Common Door Driver circuit between the A/C Heater Control C1
harness connector and the Left Blend Door Actuator harness connector.
Does the ohm meter read open circuit?
Yes
Repair the (C154) Common Door Driver circuit for an open.
Perform BODY VERIFICATION TEST - VER 1 .
2007 Dodge Nitro R/T
2007 HVAC Heating & Air Conditioning - Electrical Diagnostics - Nitro
No
Go to 3).
3) CHECK (C54) LEFT BLEND DOOR DRIVER CIRCUIT FOR AN OPEN
Fig. 54: Measuring Resistance Of (C54) Driver Blend Door Driver Circuit Between A/C Heater
Control C1 Way Harness Connector And Left Blend Door Actuator Harness Connector
Courtesy of CHRYSLER LLC
Measure the resistance of the (C54) Driver Blend Door Driver circuit between the A/C Heater Control C1
way harness connector and the Left Blend Door Actuator harness connector.
Does the ohm meter read open circuit?
Yes
Repair the (C54) Driver Blend Door Driver circuit for an open.
Perform BODY VERIFICATION TEST - VER 1 .
2007 Dodge Nitro R/T
2007 HVAC Heating & Air Conditioning - Electrical Diagnostics - Nitro
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