Detroit DDEC II Troubleshooting Manual & Wiring Diagram

Covers: Detroit DDEC II Troubleshooting, 1988
Pages: 499
Format: PDF
File size: 151mb
Compatibility: Windows/Mac/Tablet
Notes: Searchable, printable, instant download

This manual provides instructions for troubleshooting Detroit Electronic Controlled (DDEC II) engines. Specifically covered in this manual are troubleshooting and repair steps that apply to the DDEC II systems.

Topics:

HOW TO USE THIS BOOK

BASIC KNOWLEDGE REQUIRED

• Electrical Circuits
• Use of Digital Volt-Ohm Meter
• Important Information
• Explanation of Abbreviations/Terms
• General Diagnostic Information

TESTING THE DDEC II SYSTEM

• Tools Needed to Diagnose the System
• Differences Between DDEC II and DDEC I
• Reading the Diagnostic Codes
  • Active vs . Historical Codes
  • Using the ” Check Engine” Light
  • Using the Diagnostic Data Reader
• Clearing Codes
• EEPROM Reprogramming
• Connector Checkout

TROUBLESHOOTING CHARTS

• The Diagnostic Procedure – Where to Start
• Diagnostic Codes – What They Mean
• Beginning Charts
  • Start First Chart for Diagnosis of DDEC II Using DDR
  • CEL First Chart for Diagnosis of DDEC II When No DDR is Available
• Troubleshooting Charts
  • Chart 1 Intermittent Code Or Symptom And No Codes
  • Chart 2 Engine Cranks But Will Not Start
  • Chart 3 Poor Performance And No Codes
  • Chart 4 No “Check Engine” Light During Bulb Check
  • Chart 5 ” Check Engine ” Light Always On And Code 25 On DDR
  • Chart 6 ” Check Engine” Light Always On , No Data Link And Won ‘t Flash Codes
  • Chart 7 – No Data Link And Bulb Check Okay
  • Chart 8 – ” Stop Engine” Light Always On And Code 25 On DDR
  • Chart 9 – No ” Stop Engine ” Light During Bulb Check
  • Chart 10 – Stop Engine Override Inoperative
  • Chart 11 – Power Take-Off Speed Adjust Inoperative
  • Chart 12 – Cruise Control Inoperative
  • Chart 13 – ” Cruise Active” Light Always On
  • Chart 14 – “Cruise Active ” Light Never On
  • Chart 15 – Idle Shut-Down Feature Always On
  • Chart 16 – Idle Shut-Down Feature Inoperative
  • Chart 1 7 – Engine Brake Always Enabled
  • Chart 18 – Engine Brake Inoperative
  • Chart 19 – Power Control Input Inoperative (Throttle Inhibit and Auxiliary Engine Protection)
  • Chart 20 – Two Speed Governor Switch Inoperative
  • Chart 21 – Throttle Inhibit Always On
• Diagnostic Code Charts
  • Code 11 – Power Take-Off Speed Adjust (PTOSA) Signal Voltage Low
  • Code 12 – Power Take-Off Speed Adjust (PTOSA) Signal Voltage High
  • Code 13 – Coolant Level Sensor (CLS) Signal Voltage Low
  • Code 14 – Oil or Coolant Temperature Sensor (OTS or CTS) Signal Voltage High
    Code 15 – Oil or Coolant Temperature Sensor (OTS or CTS) Signal Voltage Low
  • Code 16 – Coolant Level Sensor (CLS) Signal Voltage High
  • Code 21 – Throttle Position Sensor (TPS) Signal Voltage High
  • Code 22 – Throttle Position Sensor (TPS) Signal Voltage Low
  • Code 23 – Fuel Temperature Sensor (FTS) Signal Voltage High
  • Code 24 – Fuel Temperature Sensor (FTS) Signal Voltage Low
  • Code 25 – No Codes
  • Code 26 – Power Control Switch
  • Code 31 – Fault On Auxiliary Output
  • Code 32 – ECM Backup System Failure
  • Code 33 – Turbo Boost Sensor (TBS) Signal Voltage High
  • Code 34 – Turbo Boost Sensor (TBS) Signal Voltage Low
  • Code 35 – Oil Pressure Sensor (OPS) Signal Voltage High
  • Code 36 – Oil Pressure Sensor (OPS) Signal Voltage Low
  • Code 41 – Timing Reference Sensor (TRS)
  • Code 42 – Synchronous Reference Sensor (SRS)
  • Code 43 – Low Coolant
  • Code 44 – Oil or Coolant Overtemperature
  • Code 45 – Low Oil Pressure
  • Code 46 – Low Battery Voltage
  • Code 47 – Fuel Pressure Sensor (FPS) Signal Voltage High
  • Code 48 – Fuel Pressure Sensor (FPS) Signal Voltage Low
  • Code 51 – EEPROM Error
  • Code 52 – ECM-Analog to Digital Failure
  • Code 53 – EEPROM Failure Affecting Code Logging
  • Code 54 – Vehicle Speed Sensor
  • Code 55 – Proprietary Communication Link Failure
  • Code 56 – ECM – Analog to Digital Failure
  • Code 58 – Cruise Control Switches
  • Codes 6X (X= 1 to 8) – Injector Response Time Too Long
  • Codes 7X (X= 1 to 8) – Injector Response Time Too Short
  • Code 85 – Engine Overspeed
• ENG5V – Engine Harness +5 Volt Supply
• VEH5V – Vehicle Harness +5 Volt Supply
• Wiring Diagram
• DDEC II Component Assembly/Installation