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 => Repair group 24.
• ◆ The injection and ignition system control unit is equipped with self diagnosis.
• ◆ Components marked with a * are checked via the self diagnosis.
• ◆ Before carrying out repairs and for fault finding, interrogate fault memory , interrogating and erasing fault memory

Dismantling and assembling distributor
=> Page 28-24

Safety precautions => Page 28-27

Test data, spark plugs => Page 28-28

• Motronic control unit (J220)*
• ◆ Location: in plenum chamber, right
• ◆ For injection system, Lambda regulation, activated charcoal filter solenoid valve 1, speed governing via fuel pump relay, idling speed stabilization, ignition and self diagnosis
• Connector
• ◆ 3 pin
• Ignition transformer output stage (N157)*
• ◆ Checking => Page 28-32
• Ignition transformer (N152)*
• ◆ Checking => Page 28-30
• HT cable
• ◆ Check for continuity
• Suppressor
• ◆ 0.6...1.4 kω

• Screening cap
• Distributor cap
• ◆ Check for cracks and signs of tracking
• ◆ Check contact wear
• ◆ Clean before fitting
• ◆ Check carbon brush for wear and freedom of movement
• 10 Nm
• O ring
• ◆ Renew if damaged
• Earth connection
• Knock sensor 1 (G61)*
• ◆ Fitting location: Cylinder block exhaust side
• Spark plug, 25 Nm
• ◆ Remove and install with 3122B
• ◆ Type and electrode gap
  => Page 28-28 , test data, spark plugs

• 20 Nm
• ◆ Tightening torque influences the function of the knock sensor
• Knock sensor 2 (G66)*
• ◆ Fitting location: Cylinder block intake side
• Spark plug connector
• ◆ To pull off and press on use 3277
• ◆ 4...6 kω
• Connector
• ◆ Do not disconnect until ignition has been switched off for at least 20 seconds.