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.
Current Draw, Checking
-- Remove the rear bench seat. Refer to Removal and Installation .
-- Remove the cover -1- and the fuel pump control module -J538- -2- from the fuel delivery unit.
-- First, pull on the connector -arrow- without pressing the retainer to make sure it is connected securely. If the connector was not connected correctly, it could cause a fault.
-- Disconnect the connector.
-- Check the contacts on the connector and the fuel delivery unit for damage.
-- Install the test instrument adapter/DSO (5-pin) VAS 5565 between the connectors on the cover and the fuel delivery unit.
-- Connect the current clamp -A- to the red wire on the test instrument adapter/DSO (5-pin) VAS 5565 with the word "current clamp" on it.
-- Start the engine and run at idle speed.
-- Measure the current draw of the fuel pump.
- Specified value: Max. 9 amps.
The fuel pump starting current may be higher than the specified value briefly when starting the engine.
If the malfunction in the fuel system only occurs sporadically, the test can also be performed during a road test. A second person is needed to do this.
If the current draw is exceeded:
-- Replace the fuel delivery unit, the fuel pump is faulty. Refer to FUEL DELIVERY UNIT .
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.