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AUTO A/C DIAGNOSIS TSB Revision AUTOMATIC AIR CONDITIONING 55B-81 STEP 1. Using scan tool MB991958, check actuator test CAUTION To prevent damage to scan tool MB991958, always turn the speed" (02 activated), "medium speed" (03 activated), STEP 2. Check A/C-ECU connector D-23 and heater blower Q: Is A/C-ECU connector D-23 and heater blower controller unit D-17 in good condition? 00E, Harness Connector Inspection blower motor should operate normally. AC307591 AB MB991911 DATA LINK CONNECTOR MB991824 MB991827 AC204171 CONNECTOR : D-17 AP 1 2 3 4 HARNESS AC204170 CONNECTOR : D-23 D-23(B) D-23(B) CP HARNESS 1 3 4 2 12 1413 11 6 7 8 10 9 18 19 20 16 17 5 15 |