A A/C circuits - see A/C AND COOLING FAN CIRCUITS Air Injection systems AIRD, AIRB B BARO sensor C CODES Code explanations 2 DIGIT 3 DIGIT Code Types and Formats Cold Start Injector (CSI) Constant Control Relay Modules (CCRMs) A/C circuits Fan circuits Fuel circuits VPWR circuits D Diode tests Driveability diagnosis E EEC System Overview EGR - The first of 3 different systems is HERE. Electronics for EEC Engine ID Codes F Fan circuits - see A/C AND COOLING FAN CIRCUITS Fuel systems Description Fuel injectors Fuel injector specifications Fuel pressure diagnosis Fuel pressure specifications Fuel pump circuits (see POWER CIRCUITS AND RELAYS) G Gates H HO2S sensor Description Diagnosis I Idle Control Systems Problems IGNITION SYSTEMS Applications - Find which type you have. Distributor Ignition Systems - All up to 1989 and some after. Electronic Ignition Systems - Low Data Rate] - 2.3L Dual Plug, 3.0L (except FF), 3.2L SHO, & 3.8L SC Electronic Ignition Systems - High Data Rate] - 1.9L, 3.0L Flexible Fuel, 4.0L, 4.6L Operation explained Timing ISC motors K Knock Sensor(KS) M Mass Air Flow (MAF) Sensor Manifold Absolute (MAP) Sensor O O2S sensor Description Diagnosis R Reference voltage (VREF) Definition Diagnosis Relays (also see CCRMs and VCRMs) A/C Fan Fuel Pump Power S Sensors Barometric (BARO) EGR Valve Position (EVP) #1 or #2 Flexible Fuel (FF) Knock (KS) Manifold Absolute (MAP) Manual Lever Position (MLP) Mass Air Flow (MAF) Oxygen (O2S, HO2S) Description Diagnosis Pressure Feedback EGR Intake Air and Engine Coolant Temperature Throttle Position (TP) Transmission Oil Temperature Transmission speed Vane Air Flow (VAF) Vane Air Temp (VAT) Vehicle Speed Solenoids AIRB AIRD CANP - see General Purpose below EGR General Purpose Intake Air Control Bypass Air (IAC BPA) Transmission Switches Brake On Off (BOO) Park/Neutral Position (PNP) Power Steering Pressure (PSP) T Temperature sensors Engine Coolant (ECT) Intake Air (IAT) Transmission Oil (TOT) Vane Air (VAT) TESTS Cylinder Balance Ignition Timing Key On Engine Off (KOEO) Key On Engine Running (KOER) Memory Erase Output State Wiggle Test Throttle Position sensors Timing Transistors TRANSMISSIONS V Variable Control Relay Module Fuel Pump Codes or A/C & Fan Codes Fuel Circuits VPWR Circuits Variable Voltage Choke (VVC) relay Vehicle Identification Vehicle power (VPWR) VPWR - Definition VPWR - Diagnosis Vehicle Speed Sensor (VSS) Vehicle Year Codes VREF - Definition VREF - Diagnosis
Copyright 1987-1996 Dali Design. All rights reserved.
No part of this document may be copied or transmitted without written permission from the author: jthorsse@mail.bcpl.lib.md.us
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