Audi Workshop Service and Repair Manuals

Note:

Some components are located under the engine cover. Removing

=>Fig.23-9.

• Intake manifold
• ◆ With mechanical exhaust gas recirculation valve
• ◆ With intake manifold flap (engine with code letters ASZ, ATD)
• ◆ With intake manifold flap motor -V157 (engine with code letters AXR); Fitting location=>Fig.23-11
• Diesel direct injection system control unit -J248
• ◆ With altitude sender -F96
• ◆ Renewing => Page 23-57
• ◆ Checking voltage supply=>Page 23-69
• Exhaust gas recirculation valve 1 -N18
• ◆ Fitting location
  => Fig.23-12

• Intake manifold flap change-over valve -N239 (engine with code letters ASZ, ATD) or exhaust gas recirculation valve 2 -N213 (engine with code letters AXR)
• ◆ Fitting location
  => Fig.23-12
• ◆ Checking intake manifold flap change-over valve=>Page 23-18
• Charge pressure control valve -N75 (solenoid valve)
• ◆ Fitting location
  => Fig.23-12
• Low heat output relay -J359
• ◆ For vehicles with manual gearbox
• ◆ Fitting location
  => Fig.23-12
• High heat output relay -J360
• ◆ For vehicles with manual gearbox
• ◆ Fitting location
  => Fig.23-12

• Glow period warning lamp -K29
• ◆ In instrument cluster
• Accelerator position sender -G79
• ◆ Fitting location
  => Fig.23-9
• Brake light switch -F and brake pedal switch -F47
• ◆ Fitting location
  => Fig.23-10
• Clutch pedal switch -F36
• ◆ Fitting location
  => Fig.23-11
• Glow plug relay -J52
• ◆ Fitting location
  => Fig.23-14
• Diesel direct injection system relay -J322
• ◆ Fitting location
  =>Fig.23-14

• Air mass meter -G70
• ◆ Testing =>Page 23-107
• Radiator fan control unit -J293
• ◆ For vehicles with air conditioning
• Coolant temperature sender -G62
• ◆ Testing =>Page 23-85
• ◆ If necessary release pressure in cooling system before removing
• Connector
• ◆ For unit injector
  -N240...-N243
• Engine speed sender -G28
• ◆ Checking => Page 23-77
• Fuel temperature sender
  -G81
• ◆ Fitting location => Fig. 23-13

• 3 pin connectors
• ◆ For engine speed sender -G28
• ◆ For Hall sender -G40 for camshaft position
• ◆ Fitting location
  => Fig.23-10
• Hall sender -G40
• ◆ For camshaft position
• ◆ Fitting location
  =>Fig.23-13
• Intake manifold pressure sender -G71 with intake manifold temperature sender -G72

→ Fig.1    Removing engine cover

• ‒ Pull out oil dipstick -1- from dipstick tube.
• ‒ Remove engine cover -arrows-.
• ‒ Re-insert oil dipstick into guide tube.

→ Fig.2    Fitting location of accelerator position sender -G79

Note:

Illustration shows arrangement on LHD vehicles

→ Fig.3    Fitting location of brake light switch -F and brake pedal switch -F47

→ Fig.4    Fitting locations of 3-pin connectors

•     1 -    For Hall sender-G40 (black)
•     2 -    For engine speed sender -G28 (grey)

→ Fig.5    Fitting location of clutch pedal switch -F36

→ Fig.6    Fitting location for intake manifold flap motor -V157 (engine with code letters AXR)

→ Fig.7    Fitting location of valves on bulkhead in engine compartment

•     1 -    Exhaust gas recirculation valve -N18
•     2 -    Intake manifold flap change-over valve -N239 (vehicles with engine code letters ASZ, ATD) or exhaust gas recirculation valve 2 -N213 (vehicles with engine code letters AXR)
•     3 -    Charge pressure control solenoid valve -N75

→ Fig.8    Fitting location for low heat output relay -J359 and high heat output relay -J360

• ◆ Under cover on bulkhead (left side)

•     1 -    High heat output relay -J360
•     2 -    Low heat output relay -J359

→ Fig.9    Fitting location of fuel temperature sender -G81

• ◆ Front left-hand side on engine

→ Fig.10    Fitting location for Hall sender -G40

• ◆ Front right-hand side on engine

→ Fig.11        Fitting location for glow plug relay -J52

• ◆ In the central electrics panel at left of driver side foot-well, plug-in position 4.

→ Fig.12        Fitting location for diesel direct injection system relay -J322

• ◆ In 13-slot relay carrier at left under dash panel, plug-in position 12