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 98 (1.9L - FUEL INJECTION GLOW PLUG, ENGINE CODE: ALH (A4 PLATFORM))23 DIESEL FUEL INJECTIONDIESEL DIRECT FUEL INJECTION (DFI) ENGINE CONTROL MODULE (ECM) -J248DIESEL DIRECT FUEL INJECTION (DFI) ENGINE CONTROL MODULE (ECM) J248 , REPLACINGREMOVING
2002 Volkswagen Golf GLS, 2.0 K, Standard
Diesel Direct Fuel Injection (DFI) Engine Control Module (ECM) J248 , replacing: Removing
2002 Volkswagen Golf GLS, 2.0 K, StandardSECTION Removing
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2001 Volkswagen Jetta, 2001 Volkswagen Golf, 2000 Volkswagen Jetta, 2000 Volkswagen Golf, and 1999 Volkswagen Jetta. However, it is still accessible from the selected car via links, so may be relevant.
- Print out Engine Control Module (ECM) J248 identification and previous ECM code as follows:
- Connect Scan Tool (ST) V.A.G 1551/1552 → Scan Tool V.A.G 1551 , connecting .
- Press - 0 - and - 1 - buttons to select Address word 01: "Engine Control Module (ECM)".
- Switch ignition on.
Scan Tool (ST) V.A.G 1551 display will show Engine Control Module (ECM) identification, e.g.:
| 038906018M 1.9l R4 EDC G00AG 1813 -> Coding XXXXX WSC XXXXX |
- Print out Engine Control Module (ECM) J248 identification by pressing Scan Tool (ST) print button.
- Press → button.
- Press buttons - 0 - and - 6 - for the function "End output" and confirm entry with the - Q - button.
- Switch off ignition.
- Remove wiper arms and cowl panel: →92 WINDSHIELD WIPER & WASHER SYSTEM
- Remove connector from Engine Control Module (ECM) J248.
- Press securing tab - arrow - to left and pull Engine Control Module (ECM) J248 out.
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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.