2006 DODGE RAM SRT-10 Service Repair Manual

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Page 4985 of 5267

DODGE RAM SRT-10 2006 Service Repair Manual B1047–FLOOR/DEFROST MODE DOOR CONTROL CIRCUIT LOW (SINGLE-ZONE)
For a complete wiring diagramRefer to Section 8W.

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DODGE RAM SRT-10 2006 Service Repair Manual Theory of Operation
The A/C Heater Control drives the Mode Door 2 (Defrost to Floor) Actuator viathe(C801)ModeDoor2Driver
circuit and the (C34) Common Door Driver circuit. All of the door actuatorssha

Page 4987 of 5267

DODGE RAM SRT-10 2006 Service Repair Manual 2.CHECK (C801) MODE DOOR 2 DRIVER CIRCUIT FOR A SHORT TO OTHER DOOR DRIVER CIRCUITS
Measure the resistance between the (C801) Mode Door 2 Driver circuit
and the (C61) Blend Door Driver circuit, the (C

Page 4988 of 5267

DODGE RAM SRT-10 2006 Service Repair Manual 4.CHECK (C801) MODE DOOR 2 DRIVER CIRCUIT FOR A SHORT TO (C34) FRONT COMMON DOOR
DRIVER CIRCUIT
Disconnect the Mode Door 2 (Defrost to Floor) Actuator harness con-
nector.
Measure the resistance betwe

Page 4989 of 5267

DODGE RAM SRT-10 2006 Service Repair Manual B1048–FLOOR/DEFROST MODE DOOR CONTROL CIRCUIT HIGH (DUAL-ZONE)
For a complete wiring diagramRefer to Section 8W.

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Theory of Operation
The A/C Heater Control drives the Mode Door 2 (Defrost to Floor) Actuator viathe(C801)ModeDoor2Driver
circuit and the (C34) Common Door Driver circuit. All of the door actuatorsshare 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 type of short, its location, and the direction the actuator is moving when the short is present.
When Monitored:
When the Actuator DTC Detection Test is executed.
Set Condition:
If the (C801) Mode Door 2 Driver circuit is shorted to voltage.
Possible Causes
(C801) MODE DOOR 2 DRIVER CIRCUIT SHORTED TO VOLTAGE
A/C HEATER CONTROL
Diagnostic Test
1.CHECK (C801) MODE DOOR 2 DRIVER CIRCUIT FOR A SHORT TO VOLTAGE
NOTE: If present, diagnose and repair DTC B10AB Right Blend
Door Control Circuit High or B10AA Right Blend Door Control Cir-
cuit Low before proceeding.
Turn the ignition off.
Disconnect the A/C Heater Control C1 harness connector.
Turn the ignition on.
Measure the voltage of the (C801) Mode Door 2 Driver circuit.
Is the voltage above 0.2 volts?
Ye s>>
Repair the (C801) Mode Door 2 Driver circuit for a short to
voltage.
Perform BODY VERIFICATION TEST – VER 1. (Refer to 8
- ELECTRICAL/ELECTRONIC CONTROL MODULES -
STANDARD PROCEDURE).
No>>
Go To 2
2.RUN THE ACTUATOR DTC DETECTION TEST
Turn the ignition off.
Reconnect the A/C Heater Control C1 harness connector.
Turn the ignition on.
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 only display: B1048–FLOOR/DEFROST MODE DOOR CONTROL CIRCUIT HIGH?
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, Other DTC(s) Displayed

Page 4991 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 4992 of 5267

DODGE RAM SRT-10 2006 Service Repair Manual B1048–FLOOR/DEFROST MODE DOOR CONTROL CIRCUIT HIGH (SINGLE-ZONE)
For a complete wiring diagramRefer to Section 8W.

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