Dodge Nitro. Manual — part 711

Door Control Circuit/Performance DTCs first, all other Control Circuit/Performance DTCs second,
and all Control Circuit Open DTCs last. Refer to the DIAGNOSTIC CODE INDEX for a
complete list of all HVAC related symptoms.

No

Go to 2).

2) CHECK FOR A BROKEN RECIRCULATION DOOR ACTUATOR

Turn the ignition off.

Remove the Recirculation Door Actuator from the A/C Heater Housing Assembly.

By hand, attempt to rotate the actuator in both directions.

Does the actuator turn in either direction?

Yes

Replace the Recirculation Door Actuator in accordance with the service information.

Perform BODY VERIFICATION TEST - VER 1 .

No

Go to 3).

3) CHECK RECIRCULATION DOOR & A/C HEATER HOUSING FOR WARPED, WORN,
DAMAGED, MISSING, & BROKEN COMPONENTS

Inspect for a damaged or broken A/C Heater Housing Assembly, a warped, worn, or broken door, and
missing door seals. Rotate the door from stop to stop. The door should rotate approximately 70 degrees.

Are there any physical or mechanical problems with the door or housing?

Yes

Repair as necessary in accordance with the service information.

Perform BODY VERIFICATION TEST - VER 1 .

No

Replace the Recirculation Door Actuator in accordance with the service information. Then, go to
4).

4) RUN THE ACTUATOR CALIBRATION TEST

Turn the ignition on.

2007 Dodge Nitro R/T

2007 HVAC Heating & Air Conditioning - Electrical Diagnostics - Nitro

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 display this DTC as active?

Yes

Replace the A/C Heater Control in accordance with the service information.

Perform BODY VERIFICATION TEST - VER 1 .

No

Perform BODY VERIFICATION TEST - VER 1 .

B10A2-LEFT BLEND DOOR CONTROL CIRCUIT/PERFORMANCE

2007 Dodge Nitro R/T

2007 HVAC Heating & Air Conditioning - Electrical Diagnostics - Nitro

Fig. 40: Blend Door Control Circuit Schematic
Courtesy of CHRYSLER LLC

For complete wiring diagrams refer to SYSTEM WIRING DIAGRAMS article.

The A/C Heater Control monitors the door driver circuits during actuator operation for shorts to ground, shorts

2007 Dodge Nitro R/T

2007 HVAC Heating & Air Conditioning - Electrical Diagnostics - Nitro

to battery, and shorts to other door driver circuits. If detected, the A/C Heater Control reports these types of
faults as Control Circuit/Performance DTCs.

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 (C35) Mode Door Driver, or the (C154) Common Door Driver circuits while attempting to drive the
(C54) Blend Door Driver.

Diagnostic Test

1) ACTIVE DTC(S) PRESENT

Turn the ignition on.

Using the A/C Heater Control, actuate the Blend Door.

With the scan tool, check for DTCs.

Does the scan tool display this DTC as active?

Yes

Go to 2).

No

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