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Repairing injection pump >
< Rules for cleanliness
A3 Mk1
Power unit
TDI Injection and Glow Plug System (4-cyl.) 08.99 >
Fuel preparation system Diesel injection / Servicing diesel direct injection system
Fitting locations overview
TDI Injection and Glow Plug System (4-cyl.) 08.99 >
Servicing diesel direct injection system
Fitting locations overview
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
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
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)
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)
Power unit
TDI Injection and Glow Plug System (4-cyl.) 08.99 >
Fuel preparation system Diesel injection / Servicing diesel direct injection system
Fitting locations overview
Repairing injection pump >
< Rules for cleanliness