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 Voyager ECFACTORY OEM SERVICE PROCEDURE
HVAC System Test
NOTE:
After making any repairs, perform BODY VERIFICATION TEST under VERIFICATION TESTS.
- Turn the ignition on. With the DRBIII®, attempt to communicate with the Powertrain Control Module. With the DRBIII®, attempt to communicate with the Body Control Module. With the DRBIII®, attempt to communicate with the Front Control Module. If the DRBIII® was able to communicate with the PCM, the BCM, and the FCM, go to the next step. If the DRBIII® was not able to communicate with the PCM, the BCM, and the FCM, refer to the communications section of the DIAGNOSTIC TROUBLE CODE IDENTIFICATION table for the related symptom(s). See DIAGNOSTIC TROUBLE CODE IDENTIFICATION table.
- With the DRBIII®, read Powertrain/Engine Computer DTCs. If there are any HVAC related DTCs present, refer to the Powertrain Diagnostic Procedures for the related symptom(s). See DIAGNOSTIC TROUBLE CODE DEFINITIONS in SELF-DIAGNOSTICS article in ENGINE PERFORMANCE. If there are no HVAC related DTCs present, go to the next step.
- With the DRBIII®, read Body Computer DTCs. If there Are any DTCs present, refer to the appropriate category for the related symptom(s). See DIAGNOSTIC TROUBLE CODE IDENTIFICATION table. If there are no DTCs present, go to the next step.
- With the DRBIII®, read Front Control Module DTCs. If there are any DTCs present, refer to the symptom list in the related category. See DIAGNOSTIC TROUBLE CODE IDENTIFICATION table. If there are no DTCs present, go to the next step.NOTE: The evaporator temperature must be more than 55°F (12.7°C) and the work area ambient temperature must be more than 70°F (21.1°C) to test the A/C system operation.
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.
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