Diagnostic Mode 1: Check Measured Values

1999 Volkswagen Cabrio (1V7) L4-2.0L (ABA)SECTION Diagnostic Mode 1: Check Measured Values


Diagnostic mode 1: Check measured values

Function
In this diagnostic mode, all emissions-relevant measured values are displayed.

Requirement
Coolant temperature must be at least 80°C => PID 05, Coolant temperature.

Procedure
- Connect diagnostic tester.
- Depending on the desired operating condition: switch on ignition or start engine and let run at idle.
- Under address word 33, select "Diagnostic mode 1: Checking measured values."
- Select the desired measured values "PID XX".

Note: - The specified values for the measuring values can be found under the respective component and function tests.
- The following list only serves as an overview.
- The measuring values are sorted according to the PID (parameter-identifications).






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

- 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.