Output Diagnostic Test Mode (DTM)

1999 Volkswagen Cabrio (1V7) L4-2.0L (ABA)SECTION Output Diagnostic Test Mode (DTM)


Output Diagnostic Test Mode (DTM)

Blinkers are activated via output Diagnostic Test Mode (DTM).

Tools

Special tools, testers and auxiliary items required
- Fault read out device V.A.G 1551 or Mobile Scan Tool (ST) V.A.G 1552 with cable Diagnostic cable adapter V.A.G 1551/3
- Connector test set V.A.G 1594
- Diode test lamp V.A.G 1527
- Wiring diagram

Work procedure
- Fault read out device V.A.G 1551, connecting.
- Initiate On Board Diagnostic (OBD). On Board Diagnostic (OBD) For Radio-Frequency Remote Control For Central Locking, Initiating

Indicated on display:

Rapid data transfer HELP
Select function XX

- Operate scan tool according to indications on display:
- Enter 03 for function "Output Diagnostic Test Mode (DTM)".

Indicated on display:

Rapid data transfer Q
03 - Output Diagnostic Test Mode (DTM)

- Press Q button to confirm input.

Indicated on display:

Output Diagnostic Test Mode (DTM) -->

- Press --> -button.

Blinkers are activated and remain constantly lit.

- Press --> -button.

Indicated on display:

Output Diagnostic Test Mode (DTM) -->
DONE

- Press --> -button.
RENDER: 1.0x

NO RELATED

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • You smell fuel, burning insulation, or see smoke.
  • Brakes feel soft, pull hard to one side, or make grinding noises.
  • The engine overheats, stalls repeatedly, or misfires under load.
  • You are missing required tools, torque specs, or safe lifting equipment.
  • You are not confident in the next step or safety outcome.