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51–RECIRC DOOR RANGE TOO SMALL (MTC) (CONTINUED) Diagnostic Test 1. VERIFY IF ANY ACTUATOR CIRCUIT TEST FAULTS OR OVERCURRENT FAULTS ARE PRESENT Turn the ignition on. Actuate the Clear DTC function by performing the following: • Turn the blower control on. • Press the A/C mode switch down, turn the blower control to off, wait 5 seconds and then release the A/C mode • When the A/C status indicator begins displaying DTCs, set the Mode switch to the floor position, simulta- Turn the ignition off, wait 10 seconds, and turn the ignition on. Actuate the Actuator Circuit Test / Door Calibration Function by performing the following: • Turn the blower control off. • Press and hold the EBL mode switch down and then turn the blower control on. Continue to hold the EBL Actuate the Display DTC function by performing the following: • Turn the blower control on. • Press the A/C mode switch down, turn the blower control to off, wait 5 seconds and then release the A/C mode NOTE: The A/C status indicator displays active DTCs when the EBL status indictor is not illuminated and Does the A/C status indicator display any of the following DTCs: 41, 42, 43, 44, 61, 62, 63, 64, 65, 66, 67, Yes >> As present, diagnose and repair the faults in the following order: DTC 72 first, then DTC 62, then DTC 61, then DTCs 64, 66, 68, or 71, then DTCs 63, 65, 67, or 69, and finally DTCs 41, 42, 43, or 44. Refer No >> Go To 2 2. INSPECT ACTUATOR & HOUSING ASSEMBLY FOR A CONDITION CAUSING THE RECIRCULATION Turn the ignition off. Inspect the actuator, linkage, and housing assembly for a condition causing the recirculation door to 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 - 112 HVAC - ELECTRICAL DIAGNOSTICS WK |