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AUTO A/C DIAGNOSIS TSB Revision AUTOMATIC AIR CONDITIONING 55B-13 NOTE: Also check intermediate connector D-28. If intermediate . Q: Is the wiring harness between ambient air temperature sensor connector A-29 (terminals 1 and 2) and A/C-ECU ). Then go to Step 5. NO : Repair the wiring harness. Then go to Step 5. STEP 5. Recheck for diagnostic trouble code. YES : Return to Step 1. DTC 15, 16: Heater Water Temperature Sensor System AC204170 CONNECTOR : D-28 AI 2 3 27 32 28 33 16 15 4 5 19 18 29 17 34 7 8 35 22 21 9 10 30 36 31 37 25 24 23 6 20 1 14 26 11 13 12 38 Heater Water Temperature Sensor Circuit |