Wiring and Components, Checking With 121-Point Adapter Cable on ECM

Wiring and Components, Checking with 121-Point Adapter Cable on ECM

Special tools, testers and auxiliary items required

• Adapter cable (V.A.G 1598/31) (test box)

• Adapter cable (V.A.G 1598/31) (test box) is designed so that it can be simultaneously connected to the wiring harness at the Engine Control Module (ECM) and also to the ECM itself.

• This is advantageous because electronic engine control remains fully functional (e.g. measurement of signals with engine running) when the test box is attached.

• Respective test procedures note whether Engine Control Module (ECM) must also be connected to the test box.

• Always use connector test set (V.A.G 1594 C) to connect measuring equipment (e.g. voltage tester (V.A.G 1527 B), portable multimeter (V.A.G 1526 C), etc.)

Procedure

- Remove Engine Control Module (ECM) => [ Engine Control Module ] Engine Control Module.

- Connect adapter cable (V.A.G 1598/31) (test box) to multi-pin harness connectors of wiring harness.





- Clamp test box Ground (GND) clip to Ground (GND) - arrow -.

- The procedures will indicate whether the engine control module is to be connected to the test box.

- Perform test as described in the respective repair procedures.

- Install Engine Control Module (ECM) after completing test => [ Engine Control Module ] Engine Control Module.