Test Box, Connecting For Wiring and Component Test

Test Box, Connecting For Wiring And Component Test

Recommended special tools and equipment







- VAG1598/31 test box

Procedure
- Switch ignition off.
- Remove rubber seal for plenum chamber cover.







- Remove plenum chamber cover -1- toward front (arrows).







- Pry off both covers -3- using a screwdriver.
- Loosen hex-nuts -4- by several turns.
- Loosen wiper arm -2- from wiper axle by lightly tilting.
- Remove hex nuts completely and remove wiper arms.
- Disconnect securing clips -1- and remove cowl grill -5-.







- Remove cover for E-box, plenum chamber (arrows).







- Using a screwdriver, pry off retaining bracket (arrows).







- Disengage connector catches (arrows) and disconnect harness connectors -1- and -2- from Engine Control Module (ECM).

NOTE: Adaptation values are erased when connector is disconnected from the Engine Control Module (ECM), DTC memory content remains intact.







- Connect e.g. VAG1598/31 test box to connectors of wiring harness. Connect Ground (GND) clip of test box (not visible in illustration) to Ground (GND). Relevant test procedures note whether Engine Control Module (ECM) should also be connected to the test box.

CAUTION: To avoid damaging electronic components, set measuring range before connecting test leads and observe all test requirements.

Assembling
Assembly is performed in the reverse order of removal, noting the following:

Final procedures
After connecting harness connectors to Engine Control Module (ECM), the following work steps must be performed in the mentioned sequence:

1. Check DTC memory. Mode 3: Check DTC Memory
2. If necessary, erase DTC memory, see "Mode 4: Reset/erase diagnostic data. Mode 4: Reset/Erase Diagnostic Data
3. If DTC memory was erased, generate readiness code. Readiness Code, Generating

- End diagnosis and switch ignition off.