Grand Voyager L4-2.4L DOHC (1996)
Control Assembly: Testing and Inspection
Actuator Calibration/Diagnostics and Cool-down Test
GENERAL INFORMATION
If the Heating Ventilation and Air Conditioning (HVAC) control module is replaced, the Calibration Diagnostic and Cool-down tests will need to
be performed. Once this group of tests have successfully passed, they can be performed individually. The engine must be running during the test to
provide hot coolant for the heater, A/C compressor operation and to assure that the actuators are calibrated correctly. The HVAC control module
is capable of troubleshooting the system in approximately 120 seconds. If a condition is detected, an error code is displayed. The error code cannot
be erased until the condition is repaired and the diagnostic test is performed. Check wiring before replacing components.
CAUTION: Do not remove the actuators from the Heater-A/C unit assembly with power applied. Removal should only be done with the Ignition
OFF. The actuators have no mechanical stops to limit the travel. If the actuator rotates and is not connected to the unit assembly, it will become out
of calibration.
Radio Bezel and HVAC Control
Radio Bezel and HVAC Control w/Rear Blower and Zone Control
ACTUATOR CALIBRATION
Mode, Blend and Zone (if equipped) door calibration compensates for mechanical variations in the actuators, HVAC control module and its
linkages. In vehicle calibration can be entered from the control's front panel. If the REAR WIPE and INTERMITTENT LED's flash
simultaneously when Ignition is cycled ON, the actuators have not been calibrated or during the previous calibration a failure occurred.
Diagnostics will always occur during Calibration Diagnostic and Cool-down test.
