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.
Notes on DTC table
- The terminal descriptions of test box VAG 1598 are identical to the terminal descriptions of ABS Control Module (w/EDL) -J104- in the wiring diagram. Incorrect test procedures can cause system damage. Do not make connections between any terminals other than those listed in the test table.
See appropriate System Wiring Diagrams article.
- The specified values refer to the readings obtained on tester VAG 1526 and are not necessarily applicable to other test units.
- If the readings obtained do not match the specified values, carry out the DTC correction measures in the right-hand part of the table.
See appropriate System Wiring Diagrams article.
- If the specified values are achieved, also check wiring for loose connections and short circuit to positive and Ground (GND). This applies especially to sporadic DTCs.
- Use test leads VAG 1594 for checking continuity (bridging leads).
- If the measured figures only differ slightly from the specified values, clean the terminals of the testers and test leads (with terminal spray G 000 700 04) and repeat the check. Before replacing components, check wiring and connections again. This is particularly important if the specification calls for a resistance reading of less than 10 ohm..
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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.
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