{"model":"mk4","model_name":"MK4 Supra","vehicle":"Toyota Supra A80 (1993–2002, 2JZ-GE / 2JZ-GTE)","document":"Repair Manual","section":"AC","section_name":"Air Conditioning","page":70,"pages_in_section":111,"title":"Inspection Procedure","section_header":"Air Conditioning System — Troubleshooting","ocr_text":"AC–70\nAIR CONDITIONING SYSTEM – TROUBLESHOOTING\n\nINSPECTION PROCEDURE\n\n1 Check voltage of TSET terminal on A/C amplifier.\n\nON\nConnect\nTSET\nSG\nBE3840\nN08961\n\nP Remove A/C amplifier with connectors still connected.\n\nC 1. Turn temperature set dial.\n2. Check voltage between terminals TSET and SG of A/C amplifier.\n\nOK\nSet Temperature          Voltage\n20°C (68°F)              3.88 V\n25°C (77°F)              2.50 V\n30°C (86°F)              1.12 V\n\nNG\n\nOK Proceed to next circuit inspection shown on matrix chart (See page AC–26).\n\n2 Check voltage of terminal on A/C control assembly.\n\nH12-2\n(TSET)\nH12-11    H12-10  H12-9\n(SG)      (S5)    (GND)\nN08834\n\nP Remove A/C control assembly with connectors still connected.\n\nC Check voltage between following terminal and H12–9 (GND) of A/C control assembly connectors.\n\nOK\nCheck Terminals              Voltage\nH12-10 ⊕ – ⊖ H12-9         4.5 – 5.5 V\nH12-11 ⊕ – ⊖ H12-9         Below 1.0 V\nH12-2 ⊕ – ⊖ H12-9          See procedure 1.\n\nNG\n\nOK Repair or replace harness or connectors between A/C amplifier and A/C control assembly.\n\n3 Check harness and connectors for S5 and SG signal.\n\nOK\n\nNG Repair or replace harness or connectors between A/C amplifier and A/C control assembly.\n\nReplace A/C control 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