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 VARIANT/TRIMSECTION 17 (1.9L - TDI AND TDI PD GENERIC SCAN TOOL, ENGINE CODE(S): ALH, BEW (A4 PLATFORM))23 DIESEL FUEL INJECTIONCONTROL MODULE FOR DIESEL-DIRECT FUEL INJECTION SYSTEMCONTROL MODULE FOR DIESEL-DIRECT FUEL INJECTION SYSTEM, REPLACING
2002 Volkswagen Golf GLS, 2.0 K, Standard
Control module for Diesel-Direct Fuel Injection System, replacing
2002 Volkswagen Golf GLS, 2.0 K, StandardSECTION Control module for Diesel-Direct Fuel Injection System, replacing
WARNING: This page is about a different variant/trim than selected.
Work procedure
Check control module identification of the previous control module for Diesel-Direct fuel injection system as follows:
- Connect diagnostic tester. Refer to Diagnostic tester, connecting .
- Switch ignition on.
- Under address word 33, select "Diagnostic mode 9: vehicle information".
- Select the vehicle information "Test-ID 04: Calibration Identification".
Control module identification will be indicated, e.g.:
3B0907551CG 0001
- End diagnosis and switch ignition off.
- Remove wiper arms and wind cowl.
- Disengage connector from control module and then remove the connector.
- Press mounting bracket (arrow) toward left and pull control module out.
- Insert the new control module into the mounting frame.
- Install connector from control module and engage.
- Check whether new control module identification matches old control module identification.
- Generate readiness code.
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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.