Volkswagen Workshop Service and Repair Manuals

• Engine control unit*
• (Control unit for Simos injection and ignition system -J361)
• ◆ Location: In plenum chamber
• ◆ Checking voltage supply
• ◆ Replacing => Page 24-104
• Connector, 28 pin
• ◆ Only disconnect or connect with ignition switched off
• ◆ Release to disconnect
• Connector, 52-pin
• ◆ Only disconnect or connect with ignition switched off
• ◆ Release to disconnect

• Intake hose
• To breather housing
• Air mass meter (G70)* with intake air temperature sender (G42)*
• ◆ Sensor and connector contacts are gold-plated
• ◆ Checking air mass meter => Page 24-29
• ◆ Checking intake air temperature sender => Page 24-55
• Air cleaner
• ◆ Dismantling and assembling => Page 24-18
• 6 Nm
• 10 Nm

• Cable tie
• ◆ For cable channel -item 41 -
• 3 Nm
• Intake manifold - lower part
• Supply pipe/hose
• ◆ Secure with spring-type clips
• ◆ From fuel filter:

=> Repair Group 20; Removing and installing parts of fuel supply system; Removing and installing fuel tank with attachments and fuel filter

• Return pipe
• ◆ Secure with spring-type clips
• ◆ To the fuel delivery unit in fuel tank

=> Repair Group 20; Removing and installing parts of fuel supply system; Removing and installing fuel tank with attachments and fuel filter

• Fuel rail
• ◆ Dismantling and assembling => Page 24-20
• Connector
• ◆ 3 pin
• ◆ For Hall sender (G40)
• 15 Nm
• Connector
• ◆ 4 pin
• ◆ For coolant temperature sender (G62)
• ◆ Contacts 1 and 3 gold-plated
• Coolant temperature sender (G62)*
• ◆ Blue
• ◆ For engine control unit
• ◆ With coolant temperature gauge sender (G2)
• ◆ Checking => Page 24-49
• ◆ If necessary release pressure in cooling system before removing

• Retaining clip
• ◆ Check seated securely
• O ring
• ◆ Renew if damaged
• Engine speed sender (G28)*
• ◆ Checking => Page 24-59
• Seal
• ◆ Renew
• Connector
• ◆ Black, 2-pin
• ◆ For injector (N30...N33)
• Connector
• ◆ Black, 2-pin
• ◆ For twin path intake manifold change-over valve (N156)

• Seal
• If there are no stops on the intake manifold lower part:
• ◆ Seal must be bonded to the intake manifold lower part with adhesive D 000 801 and hardener D 000 802
• ◆ Identification
  => Fig. 1
• 3 pin connector
• ◆ Grey
• ◆ For engine speed sender
• ◆ Fitting location => Page 24-1 , engine compartment overview
• 4-pin connector
• ◆ Black
• ◆ For Lambda probe and Lambda probe heating
• ◆ Contacts 3 and 4 gold-plated
• ◆ Fitting location => Page 24-1 , engine compartment overview

• Lambda probe (G39)*, 50 Nm
• ◆ Grease only the threads with "G 052 112 A3"; "G 052 112 A3" must not get into the slots on the probe body
• ◆ Checking Lambda probe and Lambda control
  => Page 24-79
• ◆ Probe heating voltage supply via fuel pump relay (J17)
• ◆ Checking Lambda probe heating => Page 24-26
• ◆ Fitting location => Page 24-1 , engine compartment overview
• Support
• ◆ Between intake manifold and cylinder head
• Rubber bush

• Washer
• 8 Nm
• To heat exchanger
• From expansion tank
• Connector
• ◆ 8 pin
• ◆ Contacts gold plated
• ◆ For throttle valve control part (J338)
• To activated charcoal filter solenoid valve (N80)*/**
• ◆ Activated charcoal filter system

=> Repair group 20; Activated charcoal filter system; Servicing parts of the activated charcoal filter system

• To brake servo

• Intake manifold - upper part
• ◆ With twin path intake manifold change-over
• ◆ Dismantling and assembling => Page 24-16
• Spreader rivet
• Cable channel