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Repairing injection pump > < Rules for cleanliness
TDI Injection and Glow Plug System (4-cyl.) 08.99 >
Servicing diesel direct injection system
Fitting locations overview
 
A23-0086

Components A to D are not shown on the illustration.

  •     A -    Relay for diesel direct injection system (J322)
    • ◆ Central electrics, relay position 5
  •     B -    Glow plug relay (J52)
    • ◆ Central electrics, relay position 4
  •     C -    Accelerator position sensor (G79)
    • ◆ In footwell on accelerator
  •     D -    Brake light switch (F) and brake pedal switch (F47)
    • ◆ In footwell at brake pedal
    • ◆ Common component
 
A23-0086
  • Shut-off valve with changeover valve
    • ◆ Throttle valve unit
  • Mechanical exhaust gas recirculation valve
  • Injector with needle lift sender (G80)
  • Diesel direct injection control unit (J248) defective
    • ◆ With altitude sender (F96)
  • Exhaust gas recirculation solenoid valve (N18)
  • Boost pressure control solenoid valve (N75)
  • Relay box
    • ◆ Relay for low and high heater output
    • ◆ Only in vehicles with manual gearboxes
 
A23-0086
  • Air mass meter (G70)
  • Coolant temperature sender (G62)
  • Engine speed sender (G28)
  • Vacuum reservoir
    • ◆ Not engine code AGR
  • Connector
    • ◆ 2-pin
    • ◆ For needle lift sender (G80)
  • Connector
    • ◆ 3-pin
    • ◆ For engine speed sender (G28)
 
A23-0086
  • Connector
    • ◆ 10-pin
    • ◆ For fuel temperature sender (G81)
    • ◆ For metering control (N146)
    • ◆ For modulating piston movement sensor (G149)
    • ◆ For injection start valve (N108)
    • ◆ For fuel shut off valve (N109)
  • Injection start valve (N108)
  • Fuel cut-off valve (N109)
  • Injection pump metering control assembly
    • ◆ With fuel temperature sensor
    • ◆ With quantity adjuster (N146)
    • ◆ with sensor for modulating piston movement (G149)
  • Intake manifold pressure sender (G71) and intake manifold temperature sender (G72)

Repairing injection pump > < Rules for cleanliness