2006 DODGE RAM SRT-10 Service Repair Manual

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Page 4849 of 5267

DODGE RAM SRT-10 2006 Service Repair Manual B10AB–RIGHT BLEND DOOR CONTROL CIRCUIT HIGH (DUAL-ZONE)
For a complete wiring diagramRefer to Section 8W.

Page 4850 of 5267

DODGE RAM SRT-10 2006 Service Repair Manual Theory of Operation
The A/C Heater Control drives the Passenger Blend Door Actuator via the (C33) Passenger Blend Door Driver cir-
cuit and the (C34) Common Door Driver circuit. All of the door actuat

Page 4851 of 5267

DODGE RAM SRT-10 2006 Service Repair Manual Diagnose and repair the DTC(s). If multiple DTCs are present, beginning with the passenger blend door,
diagnose and repair all short high DTCs and then all short low DTCs. Refer tothe Table of Content

Page 4852 of 5267

DODGE RAM SRT-10 2006 Service Repair Manual B10AC–RIGHT BLEND DOOR CONTROL CIRCUIT OPEN (DUAL-ZONE)
For a complete wiring diagramRefer to Section 8W.

Page 4853 of 5267

Theory of Operation
The A/C Heater Control drives the Passenger Blend Door Actuator via the (C33) Passenger Blend Door Driver cir-
cuit and the (C34) Common Door Driver circuit. All of the door actuators share the (C34) Common Door Driver
circuit. Inside the A/C Heater Control, each door actuator has its own unique driver, but all share a single common
door driver circuit. Due to the shared circuitry similar DTCs can set at thesame time for multiple actuators depend-
ing upon the location of the open circuit and the direction the actuator is moving when the open is present.
When Monitored:
During actuator calibration.
Set Condition:
If Passenger Blend Door Actuator’s electrical circuit is open. This DTC has a maturing time of 5 seconds and
a de-maturing time of 10 seconds. If the DTC’s status changes from active tostored it will stay in memory for
100 ignition cycles.
Possible Causes
(C33) PASSENGER BLEND DOOR DRIVER CIRCUIT OPEN
(C34) COMMON DOOR DRIVER CIRCUIT OPEN
PASSENGER BLEND DOOR ACTUATOR
A/C HEATER CONTROL
NOTE: This DTC must be active for the results of this test to be valid. Do not perform this test if this DTC
is stored. Refer to HVAC System Test for stored DTC test procedures.
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?
Ye s>>
Diagnose and repair the DTC(s). Refer to the Table of Contents in this Section for a complete list of
HVAC related symptoms.
No>>
Go To 2
2.CHECK PASSENGER BLEND DOOR ACTUATOR CIRCUIT RESISTANCE
Turn the ignition off.
Disconnect the A/C Heater Control C1 harness connector.
Measure the resistance between the (C33) Passenger Blend Door
Driver circuit and the (C34) Common Door Driver circuit in the A/C
Heater Control C1 harness connector.
Is the resistance above 70 ohms?
Ye s>>
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 -
STANDARD PROCEDURE).

Page 4854 of 5267

DODGE RAM SRT-10 2006 Service Repair Manual 3.CHECK (C33) PASSENGER BLEND DOOR DRIVER CIRCUIT FOR AN OPEN
Disconnect the Passenger Blend Door Actuator harness connector.
Measure the resistance of the (C33) Passenger Blend Door Driver cir-
cuit

Page 4855 of 5267

DODGE RAM SRT-10 2006 Service Repair Manual B10AD–RIGHT BLEND DOOR TRAVEL RANGE TOO SMALL (DUAL-ZONE)
For a complete wiring diagramRefer to Section 8W.
Theory of Operation
The A/C Heater Control calibrates each actuator individually. Automati

Page 4856 of 5267

DODGE RAM SRT-10 2006 Service Repair Manual 3.RUN THE ACTUATOR DTC DETECTION TEST
With the scan tool in HVAC, select System Tests and then select Actuator DTCDetection. When the test is com-
plete, select View DTCs.
Does the scan tool display a

3.RUN THE ACTUATOR DTC DETECTION TEST
With the scan tool in HVAC, select System Tests and then select Actuator DTCDetection. When the test is com-
plete, select View DTCs.
Does the scan tool display any DTCs?
Ye s>>
Diagnose and repair the DTC(s). If multiple DTCs are present, beginning with the passenger blend door,
diagnose and repair all short high DTCs and then all short low DTCs. Refer tothe Table of Contents in
this Section for a complete list of HVAC related symptoms.
No>>
Go To 4
4.INSPECT ACTUATOR & HOUSING ASSEMBLY FOR A CONDITION CAUSING THE DOOR TO SEIZE OR
BIND
Turn the ignition off.
Inspect the actuator, linkage, and housing assembly for a condition causing the door to seize or bind.
Are there any physical or mechanical problems with the door, housing, linkage, or actuator?
Ye s>>
Repair as necessary in accordance with the Service Information.
Perform BODY VERIFICATION TEST – VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL
MODULES - STANDARD PROCEDURE).
No>>
Go To 5
5.CHECK RIGHT BLEND DOOR TRAVEL
Remove the Right Blend Door Actuator from the A/C Heater Housing Assembly.
By hand, attempt to rotate the door in both directions. The door should operate smoothly in both directions over
approximately 50 degrees of travel.
Does the door operate smoothly in both directions over approximately 50 degrees of travel?
Ye s>>
Replace the Right Blend Door Actuator in accordance with the Service Information. Then, Go To 6.
No>>
Repair as necessary in accordance with the Service Information.
Perform BODY VERIFICATION TEST – VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL
MODULES - STANDARD PROCEDURE).
6.RUN ACTUATOR CALIBRATION TEST
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 display: B10AD–RIGHT BLEND DOOR TRAVEL RANGE TOO SMALL?
Ye s>>
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 - STANDARD PROCEDURE).
No>>
Perform BODY VERIFICATION TEST – VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL
MODULES - STANDARD PROCEDURE).

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