Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSVOLKSWAGEN2002GOLF GLS, 2.0 K, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 85 (1.8L - ON BOARD DIAGNOSTIC (OBD), GENERIC SCAN TOOL - AWD, AWP, AWW)GENERIC SCAN TOOLSELECT DIAGNOSTIC FUNCTIONDIAGNOSTIC MODE 8: TANK LEAK TESTFUNCTION TEST
2002 Volkswagen Golf GLS, 2.0 K, Standard
Function test
2002 Volkswagen Golf GLS, 2.0 K, StandardSECTION Function test
WARNING: This page does not describe the selected car, but rather 15 other vehicles, including the 2006 Volkswagen GTI, 2005 Volkswagen Jetta, 2005 Volkswagen GTI, 2004 Volkswagen Jetta, and 2004 Volkswagen GTI. However, it is still accessible from the selected car via links, so may be relevant.
- Connect diagnostic tester, see CONNECT DIAGNOSTIC TESTER .
- Start engine and let run at idle for at least 15 minutes.
- Under address word 33, select "Diagnostic mode 8: Tank leak test".
- Select measuring value "Test -ID 01: Tank leak test".
- Check specified value of tank leak test at idle.
TANK LEAK TEST AT IDLE SPECIFIED VALUE
| Test-ID 01: Tank leak test | Specified value: |
|---|---|
|
Test function active |
NOTE:
- During tank leak test, Engine Control Module (ECM) limits "test function active" to approx. 12 minutes.
- If the accelerator pedal is depressed during the test, the test will be aborted.
- To repeat the tank leak test, switch ignition off and start engine again and let run at idle for at least 15 minutes.
If specified value is obtained:
- End diagnosis and switch ignition off.
If specified value is not obtained:
- EVAP canister system, checking for proper seal. See EVAP CANISTER SYSTEM, CHECKING FOR PROPER SEAL .
- Check Evaporative Emission (EVAP) Canister Purge Regulator Valve -N80-. See EVAPORATIVE EMISSION (EVAP) CANISTER PURGE REGULATOR VALVE, CHECKING .
- Leak detection pump (LDP) -V144-, checking. See CHECK LEAK DETECTION PUMP (LDP) .
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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.