Wiring and component checks, using VAG1598/18 test box
WARNING: This page is about a different car, the 1999 Volkswagen Jetta, 1998 Volkswagen Jetta, and 1997 Volkswagen Jetta. However, it is still accessible from the selected car via links, so may be relevant.
WARNING:
To guard against damage to electronic components:
- Be sure ignition is switched off, and the correct measuring range is selected before connecting test leads!
- Always observe test conditions and requirements!
NOTE:
- Use the Fluke 83 multimeter and VAG1527B voltage tester, or equivalent, for the following checks.
- The specifications listed are valid for ambient temperatures between 0° and +40°C (32° and 104°F).
- If measurements deviate only slightly from specified values, clean test equipment sockets and connectors, then repeat the tests. Before replacing any component, check wiring and connections, particularly when a specified resistance value is less than 10 ohms W), and repeat the measurement.
- Make test box connections using adapters from the VW1594 connector test kit.
- Terminal numbers for vehicle connectors and the test box sockets are identical.
- With ignition off, disconnect harness connector -1- from Diesel DFI ECM -2-, and connect test box to harness connector.
- Check as described by appropriate repair procedure.