2006 DODGE RAM SRT-10 Service Repair Manual

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Page 4953 of 5267

DODGE RAM SRT-10 2006 Service Repair Manual 2.CHECK (C21) EVAPORATOR TEMPERATURE SENSOR SIGNAL CIRCUIT & (C121) SENSORGROUND
CIRCUIT FUNCTION
Turn the ignition off.
Reconnect the A/C Heater Control C1 harness connector.
Disconnect the Evaporato

Page 4954 of 5267

DODGE RAM SRT-10 2006 Service Repair Manual 4.CHECK (C121) SENSOR GROUND CIRCUIT FOR AN OPEN
Measure the resistance of the (C121) Sensor Ground circuit between
the Evaporator Temperature Sensor harness connector and the A/C
Heater Control C1 ha

Page 4955 of 5267

DODGE RAM SRT-10 2006 Service Repair Manual B1040–PANEL MODE DOOR 1 CONTROL CIRCUIT/PERFORMANCE
For a complete wiring diagramRefer to Section 8W.
Theory of Operation
The A/C Heater Control monitors the door driver circuits during actuator ope

B1040–PANEL MODE DOOR 1 CONTROL CIRCUIT/PERFORMANCE
For a complete wiring diagramRefer to Section 8W.
Theory of Operation
The A/C Heater Control monitors the door driver circuits during actuator operation for shorts to ground, shorts 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. It is important to note that Control Circuit/Performance DTCs do not indicate
where or what type of short is present and that additional system testing isnecessary to provide more details about
the reported fault.
When Monitored:
When actuator movement is requested.
Set Condition:
If the A/C Heater Control detects an excessive current draw on any of the door driver circuits while attempting
to drive this actuator. 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 to stored it will stay in memory for 100 ignition cycles.
Possible Causes
DOOR DRIVER CIRCUIT(S) SHORTED
NOTE:TheDTCmustbeactivefortheresultsofthistesttobevalid.Donotperform this test if the DTC is
stored. Refer to HVAC System Test for stored DTC test procedures.
Diagnostic Test
1.RUN THE ACTUATOR DTC DETECTION TEST
Turn the ignition on.
With the scan tool in HVAC, erase DTCs.
With the scan tool, select System Tests and then select Actuator DTC Detection. When the test is complete, select
View DTCs.
Repair, Dual-Zone System
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.
Repair, Single-Zone System
Diagnose and repair the DTC(s). If multiple DTCs are present, beginning with the common circuit, diag-
nose and repair all short high DTCs and then all short low DTCs. Refer to the Table of Contents in this
Section for a complete list of HVAC related symptoms.

Page 4956 of 5267

DODGE RAM SRT-10 2006 Service Repair Manual B1041–PANEL MODE DOOR 1 CONTROL CIRCUIT LOW (DUAL-ZONE)
For a complete wiring diagramRefer to Section 8W.

Page 4957 of 5267

DODGE RAM SRT-10 2006 Service Repair Manual Theory of Operation
The A/C Heater Control drives the Mode Door 1 (Panel to Floor) Actuator via the (C29) Mode Door 1 Driver circuit
and the (C34) Common Door Driver circuit. All of the door actuators

Page 4958 of 5267

DODGE RAM SRT-10 2006 Service Repair Manual 2.CHECK (C29) MODE DOOR 1 DRIVER CIRCUIT FOR A SHORT TO OTHER DOOR DRIVER CIRCUITS
Measure the resistance between the (C29) Mode Door 1 Driver circuit
and the (C61) Blend Door Driver circuit, the (C80

Page 4959 of 5267

DODGE RAM SRT-10 2006 Service Repair Manual 4.CHECK (C29) MODE DOOR 1 DRIVER CIRCUIT FOR A SHORT TO (C34) COMMON DOOR DRIVER
CIRCUIT
Disconnect the Mode Door 1 (Panel to Floor) Actuator harness connec-
tor.
Measure the resistance between the (C

Page 4960 of 5267

DODGE RAM SRT-10 2006 Service Repair Manual B1041–PANEL MODE DOOR 1 CONTROL CIRCUIT LOW (SINGLE-ZONE)
For a complete wiring diagramRefer to Section 8W.

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