Wiring and Components, Checking using Test Box VAG 1598/42

Wiring and Components, Checking with Test Box (V.A.G 1598/42)

Special tools, testers and auxiliary items required

• Adapter Cable (V.A.G 1598/39-1)

• Adapter Cable (V.A.G 1598/39-2)

• Test Box (V.A.G 1598/42)

• The (V.A.G 1598/42) is designed with 105 terminals. It can be connected to one of the engine control modules via 2 different adapter cables.






• For testing at the 60-pin harness connection, the (V.A.G 1598/39-1) is connected to the test box with connector "A". Components of the 60-pin harness connection.

• For testing at the 94-pin harness connection, the (V.A.G 1598/39-2) is connected to the test box with connectors "A" and "B". Components of the 94-pin harness connection.

• The (V.A.G 1598/42) is designed so that it can be connected simultaneously to the engine control module harness and the engine control module itself.

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

• The procedures will indicate whether the engine control module (ECM) is to remain connected to the test box or not.

Procedure

- Remove the ECM. Refer to => [ Engine Control Module ] Engine Control Module.


Risk of destroying electrical components.

• Before connecting test leads, switch on respective measuring range and observe test conditions.

- Connect (V.A.G 1598/42) to wiring harness with (V.A.G 1598/39-1) or (V.A.G 1598/39-2). Clamp test box Ground (GND) clip to battery negative terminal. The procedure will indicate whether the ECM is to be connected to the test box or not.






• The procedure will indicate whether the ECM is to be connected to the test box or not.

- Perform test as described in respective repair procedure.

Installing the ECM

Install in reverse order of removal.

- Thereafter, the ECM must be equipped with the metal retainer.

- Clean threaded holes for shear bolts of locking compound residue. Cleaning can be performed with a thread cutter (tap).

- Always use new shear bolts.

- Check the DTC memory and, if necessary, erased. After DTC memory is erased, a readiness code must be generated for the engine control module using operating mode "Guided Fault-Finding".