2006 DODGE RAM SRT-10 Service Repair Manual

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Page 4945 of 5267

DODGE RAM SRT-10 2006 Service Repair Manual 3.CHECK FOR NORMAL A/C MODE SWITCH & STATUS INDICATOR FUNCTION
Turn the ignition on.
Turn the blower control on.
Press the A/C mode switch on and off several times while observing the A/C status indic

Page 4946 of 5267

DODGE RAM SRT-10 2006 Service Repair Manual B1016–REAR DEFROST SWITCH REQUEST INPUT CIRCUIT LOW (SINGLE-ZONE)
For a complete wiring diagramRefer to Section 8W.
Theory of Operation
The Rear Defrost mode switch input changes when the switch is

B1016–REAR DEFROST SWITCH REQUEST INPUT CIRCUIT LOW (SINGLE-ZONE)
For a complete wiring diagramRefer to Section 8W.
Theory of Operation
The Rear Defrost mode switch input changes when the switch is pushed down. Astored DTC B1016 indicates that
the Rear Defrost mode switch was stuck in a pushed position for more than twominutes, but has since returned to
its normal state. An active DTC B1016 indicates that the Rear Defrost mode switch is stuck in a pushed position. An
active DTC B1016 will also prevent proper Rear Defrost mode switch and status indicator function as evidenced by
not being able to turn the Rear Defrost status indicator either on if off or off if on.
When Monitored:
With the ignition on.
Set Condition:
If the Rear Defrost mode switch stays in a pushed position for more than two minutes. This DTC has a matur-
ing time of two minutes and a de-maturing time of two seconds. If the DTC’s status changes from active to
stored it will stay in memory for 100 ignition cycles.
Possible Causes
A/C HEATER CONTROL DAMAGED
OBJECT HOLDING REAR DEFROST MODE SWITCH IN A PUSHED POSITION
SUBSTANCE CAUSING REAR DEFROST MODE SWITCH TO GET STUCK IN A PUSHED POSITION
A/C HEATER CONTROL
Diagnostic Test
1.INSPECT THE A/C HEATER CONTROL FOR DAMAGE
Inspect the A/C Heater Control for damage.
Is the A/C Heater Control damaged?
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>>
Go To 2
2.INSPECT FOR OBJECT OR SUBSTANCE CAUSING THE REAR DEFROST MODE SWITCH TO STAYOR
STICK IN A PUSHED POSITION
Inspect the A/C Heater Control for anything that would cause the Rear Defrost mode switch to stay or stick in a
pushed position.
Is anything present that would cause the Rear Defrost mode switch to stay orstick in a pushed posi-
tion?
Ye s>>
Repair as necessary.
Perform BODY VERIFICATION TEST – VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL
MODULES - STANDARD PROCEDURE).
No>>
Go To 3

Page 4947 of 5267

DODGE RAM SRT-10 2006 Service Repair Manual 3.CHECK FOR NORMAL REAR DEFROST MODE SWITCH & STATUS INDICATOR FUNCTION
Turn the ignition on.
Press the Rear Defrost mode switch on and off several times while observingthe status indicator.
Does the

Page 4948 of 5267

DODGE RAM SRT-10 2006 Service Repair Manual B1031–EVAPORATOR TEMPERATURE SENSOR CIRCUIT LOW
For a complete wiring diagramRefer to Section 8W.

Page 4949 of 5267

DODGE RAM SRT-10 2006 Service Repair Manual When Monitored:
With the ignition on.
Set Condition:
If the Evaporator Temperature Sensor input is out of range toward the low voltage threshold, (A/D counts reach
low threshold of 3). This DTC has a

Page 4950 of 5267

DODGE RAM SRT-10 2006 Service Repair Manual 2.CHECK (C21) EVAPORATOR TEMPERATURE SENSOR SIGNAL CIRCUIT FOR A SHORT TO GROUND
Turn the ignition off.
Disconnect the A/C Heater Control C1 harness connector.
Measure the resistance of the (C21) Evap

Page 4951 of 5267

DODGE RAM SRT-10 2006 Service Repair Manual B1032–EVAPORATOR TEMPERATURE SENSOR CIRCUIT HIGH
For a complete wiring diagramRefer to Section 8W.

Page 4952 of 5267

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