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B10AD–RIGHT BLEND DOOR TRAVEL TOO SMALL (ATC) For a complete wiring diagram Refer to Section 8W. Theory of Operation The A/C Heater Control calibrates each actuator individually. Automatic calibration occurs upon power up after • When Monitored: • Set Condition: Possible Causes DOOR DRIVER ELECTRICAL CIRCUIT(S) RIGHT BLEND DOOR SEIZED, BINDING, OBSTRUCTED RIGHT BLEND DOOR ACTUATOR A/C HEATER CONTROL Diagnostic Test 1. CHECK FOR ACTIVE CONTROL CIRCUIT/PERFORMANCE & CONTROL CIRCUIT OPEN DTCs Turn the ignition on. With the scan tool, read active HVAC DTCs. Does the scan tool display any active: XXXX CONTROL CIRCUIT/PERFORMANCE or XXXX CONTROL Yes >> Diagnose and repair the DTC(s). If present, diagnose and repair all Control Circuit/Performance DTCs before diagnosing Control Circuit Open DTCs. Refer to the Table of Contents in this Section for a com- No >> Go To 2 2. INSPECT ACTUATOR & HOUSING ASSEMBLY FOR A CONDITION CAUSING THE RIGHT BLEND DOOR Turn the ignition off. Inspect the actuator, linkage, and housing assembly for a condition causing the right blend door to seize or bind. Are there any physical or mechanical problems with the door, housing, linkage, or actuator? Yes >> Repair as necessary in accordance with the Service Information. Perform BODY VERIFICATION TEST – VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL No >> Go To 3 24 - 158 HVAC - ELECTRICAL DIAGNOSTICS LX |