Dodge Nitro. Manual — part 705

Fig. 24: Recirculation 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 Recirculation Door Actuator via the (C32) Recirculation Door Driver and

2007 Dodge Nitro R/T

2007 HVAC Heating & Air Conditioning - Electrical Diagnostics - Nitro

the (C154) Common Door Driver.

When Monitored:

With the ignition on.

Set Condition:

If the A/C Heater Control detects a short to ground or to voltage on the (C32) Recirculation Door Driver,
the (C54) Blend Door Driver, the (C35) Mode Door Driver, or the (C154) Common Door Driver circuits
while attempting to drive the (C32) Recirculation Door Driver.

Diagnostic Test

1) ACTIVE DTC(S) PRESENT

Turn the ignition on.

Using the A/C Heater Control, actuate the Recirculation 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

Possible Causes

(C32) RECIRCULATION DOOR DRIVER CIRCUIT SHORTED TO VOLTAGE
(C54) BLEND DOOR DRIVER CIRCUIT SHORTED TO VOLTAGE
(C35) MODE DOOR DRIVER CIRCUIT SHORTED TO VOLTAGE
(C154) COMMON DOOR DRIVER CIRCUIT SHORTED TO VOLTAGE
(C32) RECIRCULATION DOOR DRIVER CIRCUIT SHORTED TO GROUND
(C54) BLEND DOOR DRIVER CIRCUIT SHORTED TO GROUND
(C35) MODE DOOR DRIVER CIRCUIT SHORTED TO GROUND
(C154) COMMON DOOR DRIVER CIRCUIT SHORTED TO GROUND
RECIRCULATION DOOR ACTUATOR
MODE DOOR ACTUATOR
BLEND DOOR ACTUATOR
A/C HEATER CONTROL

2007 Dodge Nitro R/T

2007 HVAC Heating & Air Conditioning - Electrical Diagnostics - Nitro

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 (C32) RECIRCULATION DOOR DRIVER CIRCUIT FOR A SHORT TO VOLTAGE

Fig. 25: Measuring Voltage Of (C32) Recirculation Door Driver Circuit In A/C Heater Control C1
Harness Connector
Courtesy of CHRYSLER LLC

Turn the ignition off.

Disconnect the A/C Heater Control C1 harness connector.

Turn the ignition on.

Measure the voltage of the (C32) Recirculation Door Driver circuit in the A/C Heater Control C1 harness
connector.

Is there any voltage present?

Yes

Repair the (C32) Recirculation Door Driver circuit for a short to voltage.

Perform BODY VERIFICATION TEST - VER 1 .

No

Go to 3).

2007 Dodge Nitro R/T

2007 HVAC Heating & Air Conditioning - Electrical Diagnostics - Nitro

3) CHECK (C35) MODE DOOR DRIVER CIRCUIT FOR A SHORT TO VOLTAGE

Fig. 26: Measuring Voltage Of (C35) Mode Door Driver Circuit In A/C Heater Control C1 Harness
Connector
Courtesy of CHRYSLER LLC

Measure the voltage of the (C35) Mode Door Driver circuit in the A/C Heater Control C1 harness
connector.

Is there any voltage present?

Yes

Repair the (C35) Mode Door Driver circuit for a short to voltage.

Perform BODY VERIFICATION TEST - VER 1 .

No

Go to 4).

4) CHECK (C54) BLEND DOOR DRIVER CIRCUIT FOR A SHORT TO VOLTAGE

2007 Dodge Nitro R/T

2007 HVAC Heating & Air Conditioning - Electrical Diagnostics - Nitro