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/Engine 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/ECM, the BCM, and the FCM, go to the next step. If the DRBIII® was not able to communicate with the PCM/ECM, the BCM, and the FCM, refer to the communication 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 DTC's. If there are any HVAC related DTCs present, see SELF-DIAGNOSTICS article in ENGINE PERFORMANCE. If there are not any HVAC related DTCs present, go to the next step.
- With the DRBIII®, read Body Computer DTC's. If there are any DTCs present, see DIAGNOSTIC TROUBLE CODE IDENTIFICATION table. If there are not any DTCs present, go to the next step.
- With the DRBIII®, read Front Control Module DTC's. If there are any DTCs present, see DIAGNOSTIC TROUBLE CODE IDENTIFICATION table. If there are not any DTCs present, go to the next step.
CAUTION:
The work area ambient temperature must be above 60°F (15.6°C) to test 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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