Lumina V6-191 3.1L VIN T MFI (1993)
Blower Motor: Initial Inspection and Diagnostic Overview
System Diagnosis
HVAC: Blower Controls (RPO C67) System Check
System Check
Symptom Table
Symptom Table
Perform the System Check and refer to the Symptom Table for the appropriate diagnostic procedures.
Troubleshooting Hints
1. If the HVAC Control Assembly is completely inoperative, check for poor connections at HVAC Control Assembly Connector C1.
2. Check for missing or damaged connector seals at the Blower Motor Resistor and Blower Motor High Speed Relay.
3. Check HVAC Fuse if the Blower Motor is inoperative. If open, check for short to ground though CKT 50.
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Check for a broken (or partially broken) wire inside of the insulation which could cause system failure but prove "GOOD" in a
continuity/voltage check.
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Check for proper installation of aftermarket electronic equipment which may affect the integrity of other systems.
