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.:







- V.A.G 1598/31 test box

Work procedure for Engine Control Module (ECM)







- Remove inner cover, left plenum chamber, to do this, slide center cover -1- of plenum chamber forward out of catch and remove from instrument panel.







- Remove three bolts -1-.







- Lift left cover -1- of plenum chamber in center of instrument panel (arrow -A-) and thereby unclip (front edge clips, back edge clamps).
- Pull cover -1- toward vehicle center out of bracket underneath A-pillar (arrow -B-).
- Then disengage connector from control module and disconnect.







- Connect V.A.G1598/31 test box at control module wiring harness. Engine Control Module (ECM) is not connected.

When harness connectors are disconnected from the Engine Control Module (ECM) 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

Connecting test box to Transmission Control Module (TCM)

Recommended special tools and equipment e.g.:

Vehicles with 01M transmission







- V.A.G1598/18A test box

Vehicles with 09G transmission







- V.A.G 1598/22 test box

Work procedure for Transmission Control Module (TCM)







- Remove inner cover, right plenum chamber, to do this, slide center cover -1- of plenum chamber forward out of catch and remove from instrument panel.







- Remove three bolts -1-







- Lift right cover -1- of plenum chamber in center of instrument panel (arrow -A-) and thereby unclip (front edge clips, back edge clamps).
- Pull cover -1- toward vehicle center out of bracket underneath A-pillar (arrow -B-).

Vehicles with 01M transmission







- Remove mounting bolt (arrow).







- Open locking mechanism of connector in direction of (arrow) and disconnect connector from control module.
- Remove control module.







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

Vehicles with 09G transmission







- Remove securing nuts (arrows -3-).
- Open locking mechanism of connector in direction of (arrow -1-) and disconnect connector from control module -2-
- Remove control module.
- Connect test box (V.A.G 1598/22) to control module wiring harness and lock.