Dodge Durango (HB). Manual — part 1529
DTC SET DURING ROUTINE - TEST NOT PASSED (ATC & MTC)
For a complete wiring diagram Refer to Section 8W.
•
When Monitored:
When the Cooldown Test is executed.
•
Set Condition:
If the A/C system is unable to lower the evaporator temperature 11.11°C (20°F) within one minute.
Refer to B1079–CLIMATE CONTROL COOL DOWN TEST EXCESSIVE TIME (ATC & MTC) for the diagnostic test
procedure.
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HVAC - ELECTRICAL DIAGNOSTICS
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BLOWERS NOT ON HIGH - TEST NOT RUN
For a complete wiring diagram Refer to Section 8W.
•
When Monitored:
When the Cooldown Test is executed.
•
Set Condition:
If either the front blower speed was not set to high speed prior to starting the Cooldown Test or the front
blower speed was changed from high speed to another setting after starting the Cooldown test.
Refer to B1079–CLIMATE CONTROL COOL DOWN TEST EXCESSIVE TIME (ATC & MTC) for the diagnostic test
procedure.
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REFRIGERANT TEMPERATURE SENSOR ERROR (ATC & MTC)
For a complete wiring diagram Refer to Section 8W.
•
When Monitored:
When the Cooldown Test is executed.
•
Set Condition:
If a fault occurred with the Evaporator Temperature Sensor/sensor circuits.
Refer to B1079–CLIMATE CONTROL COOL DOWN TEST EXCESSIVE TIME (ATC & MTC) for the diagnostic test
procedure.
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HVAC - ELECTRICAL DIAGNOSTICS
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*HVAC SYSTEM TEST (ATC)
For the Automatic Temperature Control (ATC) circuit diagram (Refer to 24 - HEATING & AIR CONDITIONING -
SCHEMATICS AND DIAGRAMS).
For a complete wiring diagram Refer to Section 8W.
Diagnostic Test
1.
HVAC SYSTEM TEST
NOTE: The HVAC System Test consists of four tests. Test 2 tests A/C system performance, Test 3 tests for
mode switch, door actuator circuit, auxiliary coolant pump circuit, and rear blower control circuit faults,
Test 4 tests for shorted door actuator circuits, and Test 5 tests for door actuator calibration faults. Either
perform all four tests for a complete system test or perform an individual test if diagnosing a specific symp-
tom.
NOTE: Active DTCs must be resolved before diagnosing stored DTCs.
Start the engine.
With the scan tool, erase HVAC DTCs.
Press the ATC’s POWER switch on.
Choose a diagnostic test to perform
Complete HVAC System Test
Go To 2
A/C System Performance Test
Go To 2
Mode Switch, Door Actuator Ckt, Auxiliary Coolant Pump Ckt, & Rear Blower Control Ckt Test
Go To 3
Actuator DTC Detection Test
Go To 4
Actuator Calibration Test
Go To 5
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