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45–BLEND DOOR BOUND (MTC) (CONTINUED) For the Manual Temperature Control (MTC) circuit diagram (Refer to 24 - HEATING & AIR CONDITIONING - SCHE- For a complete wiring diagram Refer to Section 8W. Theory of Operation NOTE: Diagnose and repair Actuator Circuit Test faults (DTC 61, 62, 63, 64, 65, 66, 67, 68, 69, 71, and 72) The purpose of actuator calibration is to determine the total span of door travel between physical stops. To calibrate • When Monitored: • Set Condition: Possible Causes ACTUATOR CIRCUIT TEST FAULTS PRESENT OVERCURRENT FAULTS PRESENT (C255) LEFT BLEND DOOR DRIVER CIRCUIT OPEN (C55) LEFT BLEND DOOR COMMON DRIVER CIRCUIT OPEN LEFT BLEND DOOR SEIZED, OBSTRUCTED LEFT BLEND DOOR ACTUATOR A/C HEATER CONTROL 24 - 88 HVAC - ELECTRICAL DIAGNOSTICS WK |