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.
2002 Chrysler Intrepid BaseFACTORY OEM SERVICE PROCEDURE
Manual A/C Control Head Switch Inoperative
NOTE:
After making any repairs, perform BODY VERIFICATION TEST
under VERIFICATION TESTS.
Possible Causes:
- Control Head - Open Switch
- Control Head Switches OK
Testing
- Turn ignition on. With the scan tool, read the mode switch MUX voltage. Press and hold the A/C button and observe the scan tool voltage. Voltage should be around .45 volt. Press and hold the rear defogger button and observe the scan tool voltage. Voltage should be around .25 volt. If the A/C switch failed, replace the control head. See MANUAL A/C-HEATER SYSTEMS - CONCORDE & INTREPID article in HVAC. If both switches passed, there is no problem with the control head switches. Retry system and recheck for DTC's.
Factory Service Tools
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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.