Test sequence

• Pull connector off Camshaft Position (CMP) sensor (distributor).
• Connect multimeter to measure voltage using aux. cables from VAG 1594 to outer contacts of connector.
Fig 1: Connecting Multimeter To Measure Voltage Using Aux. Cables From VAG 1594 To Outer Contacts Of CMP Sensor Connector
Courtesy of VOLKSWAGEN OF AMERICA, INC.
• Switch ignition on.
• Specification: min. 9 V
• Switch ignition off.
• Connect test box VAG 1598/22 to control module wiring harness.
  Fig 2: Connecting Test Box VAG 1598/22 To Control Module Wiring Harness

  Courtesy of VOLKSWAGEN OF AMERICA, INC.
• Check wiring between test box and connector for open circuit according to wiring diagram.

Contact 1+socket 67

Contact 2+socket 76

Wire resistance: Max. 1.5Ω

• Additionally check wires for short to one another.

  Specification: INFINITE Ω

  Fig 3: Checking Wiring Between Test Box And CMP Connector For Open Circuit According To Wiring Diagram

  Courtesy of VOLKSWAGEN OF AMERICA, INC.

If no wiring fault is detected and voltage was present between contacts 1+3:

• Replace distributor with Camshaft Position (CMP) sensor. See SAFETY PRECAUTIONS , item 15.

If no wiring fault is detected and no voltage was present between contacts 1+3:

• Replace engine control module. See ENGINE CONTROL MODULE (ECM), REPLACING .