Test Box, Connecting For Wiring Test

Test Box, Connecting For Wiring Test

Requirement
- Ignition switched off.

Connecting test box to wiring harness of Engine Control Module (ECM)

Recommended special tools and equipment e.g.:

Vehicles with 80-pin control module







- V.A.G 1598/22 test box

Vehicles with 121-pin control module







- V.A.G 1598/31 test box

Vehicles with 154-pin control module
- V.A.G 1598/42 test box
- V.A.G 1598/39-1 adapter cable
- V.A.G 1598/39-2 adapter cable

Continue for all vehicles

Work procedure
- Remove inner plenum chamber cover.
- Disengage connector from control module and disconnect.

Vehicles with 80-pin control module







- Connect V.A.G1598/22 test box at control module wiring harness.

Vehicles with 121-pin control module







- Connect V.A.G1598/31 test box at control module wiring harness. The control module for Diesel-Direct fuel injection system is not connected.

Vehicles with 154-pin control module







- Connect test box (V.A.G 1598/42) to control module wiring harness using adapter cable (V.A.G 1598/39-1 or V.A.G 1598/39-2). The control module for Diesel-Direct fuel injection system is not connected.

Continue for all vehicles
When harness connectors are disconnected from the control module for Diesel-Direct fuel injection system or the battery is disconnected, all adaptation values in the control module are erased. DTC memory content will remain intact however. If the engine is started after this, rough, uneven idle can result for a short time. In this case, the readiness code must be generated again. Monitors, Trips, Drive Cycles and Readiness Codes

Connect test box to wiring harness of Transmission Control Module -TCM- (vehicles with transmission 01 M)

Recommended special tools and equipment e.g.:







- V.A.G 1598/18 test box for Transmission Control Module (TCM)

Work procedure
- Remove inner plenum chamber cover.







- Then open locking mechanism of connector in -direction of arrow- and disconnect connector from control module.







- Connect test box (V.A.G 1598/18) to control module wiring harness -arrow 1- and engage -arrow 2-