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See TURBOCHARGER under AIR INDUCTION SYSTEMS. FUEL SYSTEM FUEL DELIVERY NOTE: For fuel system pressure testing, see F - BASIC TESTING article. Fuel Pressure Regulator Control Solenoid Valve (Turbo Models) See G - TESTS W/CODES article. FUEL CONTROL Fuel Injectors See G - TESTS W/CODES article. IDLE CONTROL SYSTEM ELECTRICAL LOAD SWITCH 3000GT (DOHC) 1) Turn ignition off. Disconnect PCM connector. See POWERTRAIN CONTROL MODULE (PCM) LOCATION table under COMPUTERIZED ENGINE CONTROLS. Go to next step. 2) Turn headlights on. Using DVOM, check voltage between PCM connector terminal No. 58 and chassis ground. If battery voltage is present, turn headlights off and go to next step. If battery voltage is not present, check and repair circuit between headlight relay connector and PCM connector. 3) Turn defogger switch on. Using DVOM, check voltage between PCM connector terminal No. 58 and chassis ground. If battery voltage is present, turn defogger switch off and go to next step. If battery voltage is not present, check and repair circuit between defogger relay connector and PCM connector. 4) Turn blower switch on. Using DVOM, check voltage between PCM connector terminal No. 58 and chassis ground. If battery voltage is present, turn blower switch off and go to next step. If battery voltage is not present, check and repair circuit between blower switch connector and PCM connector. 5) If battery voltage is present and preceding tests do not show any system or component malfunction and PCM is suspected, substitute PCM with known-good unit and retest system. IDLE AIR CONTROL (IAC) MOTOR For testing procedures, see G - TESTS W/CODES article. IGNITION SYSTEM NOTE: For basic ignition checks, see F - BASIC TESTING article. TIMING CONTROL SYSTEMS Camshaft Position Sensor See G - TESTS W/CODES article. Crankshaft Position Sensor See G - TESTS W/CODES article. |