Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSDODGE AND RAM1999CARAVAN BASE, 2.4 BREPAIR AND DIAGNOSISHEATING, VENTILATION & A/C (HVAC)HVAC CONTROL SYSTEMSHVAC SYSTEMS
1999 Dodge and Ram Caravan Base, 2.4 B
HVAC Systems
1999 Dodge and Ram Caravan Base, 2.4 BSECTION HVAC Systems
- Specifications
- Description
- Operation
- Programming
- Self-Diagnostic System
- Diagnostic Tests
- DTC 1: Mode Actuator Did Not Reach Defrost Position
- DTC 2: Mode Actuator Did Not Reach Panel Position
- DTC 3: Blend/Passenger Actuator Did Not Reach Cold Stop
- DTC 4: Blend/Passenger Actuator Did Not Reach Heat Stop
- DTC 5: Evaporator Fin Temperature Sensor Open
- DTC 6: Evaporator Fin Temperature Sensor Shorted
- DTC 7: Zone/Driver Actuator Did Not Reach Cold Stop
- DTC 8: Zone/Driver Actuator Did Not Reach Hot Stop
- DTC 9: HVAC Control Module Internal Failure
- System Tests
- Component Tests
- Removal & Installation
- Notes
- A/C-Heater Control Switch
- A/C-Heater Control Panel
- A/C Pressure Transducer
- Blend Door & Mode Door Actuators
- Mode Door
- Mode Door Actuator
- RECIRCULATION Door Actuator
- Blower Motor Assembly
- Blower Motor Resistor
- Compressor
- Condenser
- Evaporator
- Evaporator Fin Temperature Sensor
- Expansion Valve
- Filter-Drier Assembly
- Heater & A/C Unit Housing
- Heater Core
- High Pressure Relief Valve
- Instrument Panel
- Rear A/C Air Distribution Duct
- Rear Evaporator & Expansion Valve
- Rear Heater Core
- Rear Heater Distribution Duct
- Underbody Heater Lines
- Underbody Refrigerant Lines
- Torque Specifications
- Wiring Diagrams
RENDER: 1.0x
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.