Test requirements for vehicles with A/C
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 1999 Volkswagen Jetta, 1998 Volkswagen Jetta, 1997 Volkswagen Passat, 1997 Volkswagen Jetta, and 1996 Volkswagen Passat. However, it is still accessible from the selected car via links, so may be relevant.
- Vehicle at room temperature (above +15° C)
- A/C switched ON
- Select lowest temperature and highest blower speed
The output Diagnostic Test Mode actuates the following components in the sequence listed:
- Cold start injector -N108-
- EGR vacuum regulator solenoid valve -N18-
- A/C compressor cut -out
- Fuel cut-off valve -N109-
- Wastegate bypass regulator valve -N75-
- Glow plug relay -J52-
- Glow plug indicator light -K29-
- Relay for preheating coolant, low heat output -J359-
- Relay for preheating coolant, high heat output -J360-
NOTE:
- Activation of each component in the output DTM sequence is limited to 30 seconds, but the sequence can be advanced at any time by pressing the --> button.
- Switch the ignition off before repeating the output Diagnostic Test Mode checks.