Fuel Injection System - BOSCH LH (Non Turbo)

• Description
• Operation
  • Electronic Control Unit (Ecu) Operation
  • Fuel System Operation
  • Injectors Operation
  • Fuel Pump Relay Operation
  • Sensors Operation
    • Air Mass Meter
    • A/C Micro Switch (Volvo)
    • Oxygen Sensor
    • Throttle Valve Switch (Volvo)
    • Coolant Temperature Sensor
    • Engine Speed
  • System Relay
• Adjustments
  • Hot (Slow) Idle Rpm & Idle Mixture
  • Throttle Valve
  • Throttle Valve Switch
  • Throttle Link Rod
• Circuit Testing
  • Ignition Switch Circuit Test
  • Starter Motor Circuit Test
  • System Relay Power Supply Test
  • Fuel Pump Circuit Test
  • Ground Circuits Test (Using An Ohmmeter)
  • Ground Circuits Test (Using A Test Light)
  • Injector Circuits Test
  • Temperature Sensor Circuit Test
  • Air Mass Meter Circuit Test
• Component Testing
  • Fuel Line Pressure/Pressure Valve Test
  • Electronic Control Unit (Ecu) Test
  • Throttle Switch Test
  • A/C Microswitch Test
• System Testing
  • System Function Check
  • System Check
• Troubleshooting
  • Preliminary Checks
  • Symptom
    • Engine Difficult To Start Or Will Not Start Cold
    • Engine Difficult To Start Or Will Not Start Hot
    • Poor Cold Idle/Warm-Up
    • Poor Hot Idle
    • Co Level Too High
    • Co Level Too Low At Idle
    • Poor Engine Performance
    • Excessive Fuel Consumption
    • Engine Run-On
    • Engine Backfires Into Manifold
• Wiring Diagram