Computers and Control Systems: Technical Service Bulletins

• Customer Interest
  • Engine - Hard Cold Starts/Hesitation/Stalls On Start-Up
    • Overview
    • Procedures, Warranty and Labor
    • Idle Speed Adjustment
    • Procedure # 1
    • Procedure # 2 Idle Air By-Pass Valve Cleaning Only
    • Warranty Coverage
    • Labor Standards Operations
    • Operation Description
  • Engine - Detonation/Hard Start/Rough Idle/Stall
• By Symptom
  • Customer Interest
    • Engine - Hard Cold Starts/Hesitation/Stalls On Start-Up
      • Overview
      • Procedures, Warranty and Labor
      • Idle Speed Adjustment
      • Procedure # 1
      • Procedure # 2 Idle Air By-Pass Valve Cleaning Only
      • Warranty Coverage
      • Labor Standards Operations
      • Operation Description
    • Engine - Detonation/Hard Start/Rough Idle/Stall
  • Driveability
    • Engine - Hard Cold Starts/Hesitation/Stalls On Start-Up
      • Overview
      • Procedures, Warranty and Labor
      • Idle Speed Adjustment
      • Procedure # 1
      • Procedure # 2 Idle Air By-Pass Valve Cleaning Only
      • Warranty Coverage
      • Labor Standards Operations
      • Operation Description
    • Engine - Detonation/Hard Start/Rough Idle/Stall
  • Starting problems
    • Engine - Detonation/Hard Start/Rough Idle/Stall
• All Technical Service Bulletins
  • Electrical/Electronic/Fuel Induction - Glossary
    • Overview
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  • Vehicle - Welding Precautions
  • IDM and Spark Timing Diagnosis - Manual Revision
  • EEC IV Code 14 Diagnostics - Manual Correction
  • Breakout Box and Monitor Box Connections
  • Fuel Pressure Specification - Corrections
  • EEC IV - Octane Adjust Shorting Bar Correction
  • Electronic Modules - Protection From Static Electricity
  • Octane Shorting Bar - Manual Revision
    • Overview
    • EEC-IV - Quick Test - Engine Running Self-Test
    • Quick Test:Diagnostic By Symptom
    • Appendix:Self-Test Description
    • Engine RPM Sensor (Diesel) Pinpoint Test DI
    • Vane Airflow Sensor Pinpoint Test DK
    • Octane Adjust Pinpoint Test Kp
    • Supercharger Bypass Solenoid (Sbs) Pinpoint Test KS
  • Distributorless Ignition System - Manual Revisions
    • Overview
    • Diagnostic Procedure (DIS) 2.3L EFI Truck (Dual Plug)
      • Overview
      • Index:2.3L EFI Truck (Dual Plug) DIS
      • Preliminary Checkout, Equipment and Notes
      • DIS Diagnostic Cable
      • 2.3L EFI Truck (Dual Plug) DIS Module and Pin-Out
      • 2.3L EFI Truck (Dual Plug) DIS Wiring Schematic
      • DIS Schematic and Breakout Box Overlay Acronyms
      • Crankshaft Sensor Description
      • 2.3L EFI Truck (Dual Plug) DIS System Description
      • 2.3L EFI Truck (Dual Plug) DIS Block Diagram
      • 2.3L EFI Truck (Dual Plug) DIS Waveforms
      • 2.3L EFI Truck (Dual Plug) DIS Component Location
      • 2.3L EFI Truck (Dual Plug) DIS Pinpoint Test Diagnostics
      • No Start
        • Pinpoint Test A1 --> A4
        • Pinpoint Test A5 --> A9
        • Pinpoint Test A10 --> A14
        • Pinpoint Test A15 --> A18
        • Pinpoint Test A19 --> A22
        • Pinpoint Test A23 --> A26
        • Pinpoint Test A27 --> A28
      • Code 28: CID Failure IDM Low or Right Coil Pack Failure
        • Pinpoint Test B1 --> B5
        • Pinpoint Test B6 --> B7
        • Pinpoint B10 --> B13
      • Code 48: Left Coil Pack Failure or IDM Open or High
        • Pinpoint Test C1 --> C4
        • Pinpoint Test C5 --> C6
      • Code 18: Coil Failure
        • Pinpoint Test D1 --> D4
        • Pinpoint D5 --> D6
        • Pinpoint Test D7 --> D8
        • Pinpoint Test D9 --> D10
        • Pinpoint Test D11 --> D13
      • Code 88: DPI Open, IDM Open or Spout High
        • Pinpoint Test E1 --> E3
        • Pinpoint Test E4 --> E6
        • Pinpoint Test E7 --> E8
        • Pinpoint Test E9 --> E11
        • Pinpoint Test E12 --> E13
      • Engine Running Code 18/No Codes and Lack of Power
        • Pinpoint Test F1 --> F3
        • Pinpoint Test F4 --> F6
        • Pinpoint Test F7
      • Misfire Under Load - (Bad Plugs, Wires or Short to Ground) Pinpoint Test G
      • No Codes - Intermittent Diagnosis
        • Pinpoint Test H1 --> H7
        • Pinpoint Test H8 --> H9
    • Diagnostic Procedure (DIS) 3.0L SEFI SHO and 3.8L SEFI Supercharged
      • Overview
      • Index:3.0L SEFI SHO and 3.8L SEFI Sc DIS
      • Preliminary Checkout, Equipment and Notes
      • DIS Diagnostic Cable
      • 3.0L SEFI SHO and 3.8L SEFI Sc DIS Module and Pin-Out
      • 3.0L SEFI SHO DIS Wiring Schematic
      • 3.8L SEFI Sc DIS Wiring Schematic
      • DIS Schematic and Breakout Box Overlay Acronyms
      • Camshaft and Crankshaft Sensor Description
      • 3.0L SEFI SHO and 3.8L SEFI Sc DIS System Description
      • 3.0L SEFI SHO and 3.8L SEFI Sc DIS Block Diagram
      • 3.0L SEFI SHO and 3.8L SEFI Sc DIS Waveforms
      • 3.0L SHO DIS Component Location
      • 3.0L SEFI SHO and 3.8L SEFI Sc DIS Pinpoint Test Diagnostics Index
      • No Start
        • Pinpoint Test A1 --> A4
        • Pinpoint Test A5 --> A9
        • Pinpoint Test A10 --> A12
        • Pinpoint A13 --> A16
        • Pinpoint Test A17 --> A20
        • Pinpoint A21 --> A25
        • Pinpoint Test A26 --> A29
        • Pinpoint Test A30
      • Code 18: IDM Failure or CID Open Code 49: Spout IDM Error
        • Pinpoint B1 --> B4
        • Pinpoint Test B5 --> B8
        • Pinpoint Test B9
      • Code:19 - ID to EEC Failure
        • Pinpoint Test C1 --> C5
        • Pinpoint Test C6 --> C9
        • Pinpoint Test C10 --> C11
      • Codes 45, 46 or 48: Coil 1, 2 or 3 Failure
        • Pinpoint Test D1 --> D2
        • Pinpoint Test D3 --> D5
      • No Codes - Engine Hard to Start
      • Engine Running Code 18 or Code 49: Spout Open, Short to VBAT or Short to Ground
        • Pinpoint Test F1 --> F3
        • Pinpoint Test F4 --> F5
        • Pinpoint Test F6
      • Misfire Under Load (Bad Plugs, Wires or Short to Ground) Pinpoint Test G
      • No Codes - Intermittent Diagnosis
        • Pinpoint Test H1 --> H7
        • Pinpoint Test H8 --> H9
  • Optional EEC IV Monitor Requires Update Kit
  • Key On Engine Off Self Test Procedure - Manual Revision
  • EEC IV Pinpoint - Test Manual Correction
    • Overview
    • EEC-IV No Start
    • Ignition/Erratic Diagnostic Monitor (IDM)
    • Spark Timing Check
  • TPS Mounting Screws - Hard to Remove
  • Air By Pass Valve - Cleaning/Replacement Service Tips
  • Engine - Hard Cold Starts/Hesitation/Stalls On Start-Up
    • Overview
    • Procedures, Warranty and Labor
    • Idle Speed Adjustment
    • Procedure # 1
    • Procedure # 2 Idle Air By-Pass Valve Cleaning Only
    • Warranty Coverage
    • Labor Standards Operations
    • Operation Description
  • MAP and BAP Sensor - Application Chart
  • MAP Sensor - Pinpoint Test DF Manual Correction
  • Body/Frame - Arc Welding Precautions
  • Engine - Detonation/Hard Start/Rough Idle/Stall
  • EGO Sensors - Silicone Contamination
  • EVP Sensor - Manual Revision
    • Overview
    • 1985 Pinpoint Tests - DM - EGR, EVP and EVR
    • 1985 Pinpoint Tests - Fa - Neutral Drive Switch -A/C Input
    • 1986 (EGR) Systems Functional Diagnosis
    • 1986 Quick Test: Continuous Self-Test 6.0
    • Pinpoint Test - DN - EGR - EVP & EVR
      • Overview
      • 1987 (EGR) Systems - Functional Diagnosis
      • 1987 Quick Test: Continuous Self-Test - 6.0
      • Pinpoint Test - DN - EGR - EVP & EVR
      • 1988 Functional Diagnosis
        • (EGR) Systems - Functional Diagnosis
        • Quick Test:Continuous Self-Test - 6.0
        • Pinpoint Test - DN - EGR - EVP & EVR
      • 1989 Functional Diagnosis
        • (EGR) Systems - Functional Diagnosis
        • Quick Test:Continuous Self-Test - 6.0
        • Quick Test:Diagnostic By Symptom - 7.0
        • Pinpoint Test - DN - EGR - EVP & EVR
  • EEC IV Pinpoint Test Step KE15 - Revised
  • Speed Sensor Resistance Reading - Manual Revision
  • EGR Transducer Sensor - Condensation