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 MANUALSVOLKSWAGEN2003GTI (1J1) L4-1.8L TURBO (AWP)REPAIR AND DIAGNOSISBRAKES AND TRACTION CONTROLANTILOCK BRAKES / TRACTION CONTROL SYSTEMSTESTING AND INSPECTIONSCAN TOOL TESTING AND PROCEDURESABS ITT MARK 20 IEWITH VAG 1551 SCAN TOOLCODE CONTROL MODULE
2003 Volkswagen GTI (1J1) L4-1.8L Turbo (AWP)
Code Control Module
2003 Volkswagen GTI (1J1) L4-1.8L Turbo (AWP)SECTION Code Control Module
ABS control module, coding
- All functions which could previously be performed with V.A.G 1551 can also be performed with the tester VAS 5051.
- Warning light for ABS -K47- and warning light for brake system -K118- flash when control module is coded with 00000. An entry is not set in the DTC memory.
- The ABS control module (w/EDL) -J104- must be recoded if the vehicle relevant coding is not displayed or the control module has been replaced.
- Coding is only possible after the Workshop Code (WSC) has been entered into the V.A.G. 1551 Scan Tool.
Test sequence
- Connect V.A.G 1551 Scan Tool and select (address word 03) "Brake electronics" with ignition switched on
- Establish which type of ABS hydraulic control module is installed.
- Establish engine code.
Indicated on display
- Input 07 for "Code control module" and confirm with Q key.
Indicated on display
- Confirm input with Q key.
Indicated on display
- Enter relevant code number for this vehicle and confirm with Q key.
Coding variations.
On the display the control module identification and coding are displayed, e.g.:
Coding table
RENDER: 1.0x
NO RELATED
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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.