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MANUAL A/C DIAGNOSIS TSB Revision HEATER, AIR CONDITIONING AND VENTILATION 55A-43 STEP 3. Using scan tool MB991958, check actuator test CAUTION To prevent damage to scan tool MB991958, always turn the Item 13: air mix damper motor (FACE position) • Check that the mode selection damper control motor operates. (4) Turn the ignition switch to the "LOCK" (OFF) position. YES : Replace the A/C-ECU. Then go to Step 7. STEP 4. Check A/C-ECU connector C-09 and mode Q: Are A/C-ECU connector C-09 and mode selection damper control motor and potentiometer connector 00E, Harness Connector Inspection to Step 7. AC305412 AB MB991910 DATA LINK CONNECTOR MB991824 MB991827 AC305233 C-09 (B) HARNESS SIDE 21 22 23 24 25 26 27 28 29 30 31 32 BB CONNECTOR: C-09 AC305231 C-102 HARNESS SIDE CD CONNECTOR: C-102 |