{"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":41,"pages_in_section":111,"title":"Inspection Procedure","section_header":"Air Conditioning System — Troubleshooting","ocr_text":"AC–41\nAIR CONDITIONING SYSTEM – TROUBLESHOOTING\n\nINSPECTION PROCEDURE\n\n1 Check voltage between terminal PSW of A/C amplifier and body ground.\n\nON\nConnect\n\nPSW\n8E3640\nN08798\n\nP Install the manifold gauge set.\n\nC 1. Turn ignition switch ON.\n2. Check voltage between terminal PSW of A/C amplifier connector and body ground when air conditioning gas pressure is changed.\n\nOK The voltage changes with gas pressure, as shown in the diagram below.\n\nLow Pressure Cut Side\nON (0 V)\n225 kPa\n196 kPa\nOFF (12 V)\n\nReference:\nHigh Pressure Cut Side\nON (0 V)\n2,550 kPa\n3,140 kPa\nOFF (12 V)\n\nNG\n\nOK Proceed to next circuit inspection shown on matrix chart (See page AC–26).\n\n2 Check pressure switch.\n\n1\n2 3 High & Low\nPressure\n4\n2JZ-GTE\n\n1 2\n2JZ-GE\nN08806\n\nP Disconnect pressure switch connector.\n\nC 1. Turn ignition switch ON.\n2. Check continuity between terminals 1 and 4 (2 and 1) of pressure switch when air conditioning gas pressure is changed.\n\nOK The continuity changes with gas pressure as shown below\n\nLow Pressure Cut Side\nON (continuity)\n225 kPa\n196 kPa\nOFF (no continuity)\n\nReference:\nHigh Pressure Cut Side\nON (continuity)\n2,550 kPa\n3,140 kPa\nOFF (no continuity)\n\nOK\n\nNG Repair or replace harness or connector.\n\n3 Check harness and connector between A/C amplifier and room temperature sensor (See page IN–30).\n\nOK\n\nNG Repair or replace harness or connector.\n\nCheck and replace A/C 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