Diagnostic Mode 2: Check Operating Conditions

1999 Volkswagen Cabrio (1V7) L4-2.0L (ABA)SECTION Diagnostic Mode 2: Check Operating Conditions


Diagnostic mode 2: Check operating conditions

Function

This diagnostic mode displays the operating requirements at which an emission-relevant malfunction was detected and stored by the Engine Control Module (ECM) or Transmission Control Module (TCM).

Procedure

- Connect diagnostic tester.
- Depending on desired operating condition: switch on ignition or start engine and let run at idle.
- Under address word 33, select "Diagnostic mode 2: Check operating conditions."
- Select the desired operating condition "PID XX".

Note: - The following list serves only as an overview.
- The operating conditions are sorted by the PID (parameter-identifications).






If DTCs are displayed in "PID 02":
- Repair stored malfunctions according to DTC test procedure:


Note: "Emission"-relevant malfunctions are additionally indicated in the instrument cluster via the Malfunction Indicator Lamp (MIL).

- Erase DTC memory after repairing malfunction.
- End diagnosis and switch ignition off.
RENDER: 1.0x

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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.