A8L Quattro Sedan V8-4.2L (AKB) (2002)
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Connect VAG1527B diode test lamp with test leads from VAG1594 connector test kit on socket 1 of connector (B+) and engine Ground (GND).
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Activate starter for a few seconds. Engine can also start.
The diode test lamp must light up.
If the diode test lamp does not light up, carry out the following checks.
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Check fuse for engine mounts.
If the fuse is OK
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Check wiring connection from socket 1 via fuse to fuel pump relay for continuity.
Checking activation for engine mounts
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Disconnect harness connector of particular solenoid valve.
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Connect VAG1527B diode test lamp with test leads from VAG1594 connector test kit on socket 1 of connector (B+) and engine Ground (GND).
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Carry out output Diagnostic Test Mode (DTM) and activate particular engine mount. Refer to "Scan Tool Testing/Output Diagnostic Test Mode
(DTM) (Function 03)" under "Powertrain Management" See: Powertrain Management/Computers and Control Systems/Testing and Inspection
The diode test lamp must blink during activation of the engine mounts.
If the diode test lamp blinks continuously.
