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HEATER, AIR CONDITIONER AND VENTILATION - Troubleshooting 55-3 TROUBLESHOOTING BASIC FLOW OF TROUBLESHOOTING Refer to Group 00 – How to Use Troubleshooting/Inspection Service Points. INSPECTION CHART FOR TROUBLE SYMPTOMS Trouble symptom Inspection procedure Reference page Air conditioner not working at all 1 55-3 Blower motor not working 2 55-4 Air cannot be switched between inside and outside 3 55-5 Rear defogger not working 4 55-6 Cold air not coming out from the air outlet 5 55-7 Magnet clutch not working normally 6 55-8 Condenser fan not working at all 7 55-9 Condenser fan not working only for LO 8 55-10 Condenser fan not working only for HI 9 55-11 INSPECTION PROCEDURE FOR TROUBLE SYMPTOM Inspection procedure 1 Air conditioner not working at all Probable cause The A/C-ECU power supply system (including earth) may be defective. D Harness or connector fault D A/C-ECU fault NG Repair NG Check the harness between the Ignition switch (IG2) and the A/C-ECU, and repair if necessary. NG Repair NG Check the harness between the A/C-ECU and body earth, and repair if necessary. NG Replace manual air conditioner control panel (A/C-ECU). OK Check the trouble symptoms. Check the following connectors: <L.H.D.> C-32, C-08. <R.H.D.> C-32 (2) NG OK Check the trouble symptoms. Measure at the A/C-ECU connector C-32. Disconnect the connector and measure at the harness side. D Ignition switch: ON (1) <L.H.D.> Voltage between terminal 10 and body earth. <R.H.D.> Voltage between terminal 7 and body earth. OK : Battery voltage (2) <L.H.D.> Continuity between terminals 12 and body earth. <R.H.D.> Continuity between terminals 3 and body earth. OK : Continuity (1) NG Check the following connectors: C-32, C-209, C-210 OK Check the trouble symptoms. |