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Dodge Durango (HB). Manual - part 1484
B1001–A/C SWITCH REQUEST INPUT CIRCUIT LOW (ATC & MTC)
For a complete wiring diagram Refer to Section 8W.
•
When Monitored:
With the ignition on.
•
Set Condition:
If the A/C mode switch is stuck in a pushed position for more than two minutes. This DTC has a maturing 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
OBJECT HOLDING SWITCH IN A PUSHED POSITION
A/C HEATER CONTROL
Theory of Operation
The switch input changes when the switch is pushed down. An active DTC indicates that the switch is stuck in a
pushed position. A stored DTC indicates that the switch was stuck in a pushed position for more than two minutes,
but has since returned to its normal state.
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 either HVAC System Test (ATC) or to HVAC System Test (MTC) for stored DTC test pro-
cedures.
Diagnostic Test
1.
INSPECT FOR OBJECT HOLDING SWITCH IN A PUSHED POSITION
Inspect the A/C Heater Control for an object holding the switch in a pushed position. If present, remove the object.
Turn the ignition on.
With the scan tool, erase HVAC DTCs.
Turn the ignition off, wait 10 seconds, and then turn the ignition on.
Wait two minutes, then with the scan tool, read HVAC DTCs.
Does the scan tool display active: B1001–A/C SWITCH REQUEST INPUT CIRCUIT LOW?
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.
HB
HVAC - ELECTRICAL DIAGNOSTICS
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