Current data, mode 1: Notes
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 1999 Volkswagen Jetta, 1999 Volkswagen GTI, 1998 Volkswagen Jetta, 1998 Volkswagen GTI, and 1997 Volkswagen Jetta. However, it is still accessible from the selected car via links, so may be relevant.
In mode 1 the current diagnostic data can be interrogated. Additionally the readiness code can be displayed (PID1 display field 4).
Breakdown of parameter identification (PID), see DIAGNOSTIC DATA .
The On Board Diagnostic (OBD) program can be used to check whether individual parameters correspond to actual engine condition.
- Press button -1- to select mode 1, current data.
Display will appear as shown
Module 10* or 1A* will be displayed alternately when:
- Module 10 = Engine Control Module (ECM) -J220-, or
- Module 1A = Transmission Control Module (TCM) - J217- have the same parameter identifications (PID)
Example: Engine Coolant Temperature is measured at the ECM and ATF at the TCM.
The diagnostic data must be individually interrogated via the button. Press the Print button to obtain a printout.
The MIL is said to be switched ON when the engine is not idling, and only the ignition is switched ON.