Grand Caravan L4-2.4L DOHC (1996)
Battery: Service and Repair
LEDs Flashing - A/C Calibration/Diagnostics and Cooldown Test
Perform this procedure when the battery has been replaced or recharged and the LED displays need to be reset. If problems are found during Calibration
see Actuator Calibration/Diagnostics and Cool-down Test. See: Heating and Air Conditioning/Testing and Inspection
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.
Fail Codes/Level are displayed using the REAR WIPER and INTERMITTENT LED's flashing in the sequence indicated below. The REAR
WIPER LED represents the Level and the INTERMITTENT LED represents the Value. After Calibration/Diagnostics is completed, the control
will begin flashing Level 1 codes. Depressing the WASH button will cycle to Level 2, depressing WASH again will cycle to Level 3. Each time
the WASH button is depressed will cycle to the next level. After Level 5 is reached, you will cycle back to Level 1. If the Control is a Heater Only
you will only cycle from Levels 1 to 3.
For the procedures on troubleshooting these flashes, refer to Heating and Air Conditioning, Testing and Inspection, Procedures. See: Heating and
Air Conditioning/Testing and Inspection
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
