Volkswagen Workshop Service and Repair Manuals

Notes:

• ◆ Only the components which specifically relate to the ignition system are dealt with here. For the other components of the injection and ignition system.

=> Rep.-Gr. 24

• ◆ Electrical check of Motronic injection and ignition system
• ◆ The injection and ignition system control unit is equipped with self diagnosis.
• ◆ Components marked with a * are checked via the self diagnosis.
• ◆ Interrogate fault memory before carrying out repairs and fault finding, => Page 01-5 , interrogating and erasing fault memory

Safety precautions => Page 28-5

Test data, spark plugs => Page 28-6

Note:

Motronic control unit (J220)* with connector => Page 24-8 , item. 12 .

• H.T. cable
• ◆ Check for continuity
• Suppressor
• ◆ 0.6...1.4 kω
• Terminal 1
• Terminal 15
• Ignition transformer output stage (N157)*
• ◆ Checking => Page 28-9
• 10 Nm
• Ignition transformer (N152)
• ◆ Checking => Page 28-9

• Connector
• ◆ 3 pin
• Earth strap
• Knock sensor 1 (G61)*
• 20 Nm
• ◆ Tightening torque influences the function of the knock sensor
• Spark plug connector
• ◆ Use 3277 when pulling off and pressing on
• ◆ 4...6 kω
• Spark plug, 30 Nm
• ◆ Remove and install with 3122B
• ◆ Type and electrode gap
  => Page 28-6 , test data, spark plugs
• 25 Nm
• Clamp

• O ring
• ◆ Renew if damaged
• Distributor with Hall sender (G40)*
• ◆ Installing => Page 28-7
• ◆ Checking Hall sender
  => Page 28-13
• Dust cap
• Rotor arm
• ◆ Marking: R1
• ◆ 0.6...1.4 kω
• Distributor cap
• ◆ Check for cracks and signs of tracking
• ◆ Check contact wear
• ◆ Clean before fitting
• ◆ Check carbon brush for wear and freedom of movement
• Screening cap