Touareg V8-4.2L (BHX) (2004)
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Erase DTC memory of Engine Control Module (ECM) , Diagnostic mode 4: Reset/erase diagnostic data.
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Generate readiness code.
Multiport Fuel Injection (MFI)
Fuel Pressure Regulator and Residual Pressure, Checking
Special tools, testers and auxiliary items required
‹› Pressure gauge (V.A.G 1318)
‹› Pressure gauge adapter (V.A.G 1318/7)
‹› Pressure gauge adapter (V.A.G 1318/10)
‹› Pressure gauge adapter (V.A.G 1318/13)
‹› Spring-type clip pliers (VAS 6340)
Test sequence
The fuel pressure regulator maintains fuel pressure at a constant 4.0 bar.
‹› Delivery quantity of fuel pumps OK.
CAUTION!
Fuel supply lines are under pressure! Wear protective goggles and protective gloves to avoid damage and contact with skin. Before
removing from hose connection wrap a cloth around the connection. Then release pressure by carefully pulling hose off connection.
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Place a rag around threaded connection - arrow - and relieve the fuel pressure by briefly opening line.