audi Workshop Repair Guides

Audi Workshop Service and Repair Manuals

LDP Via Read Measuring Value Block (Mechanical Throttle)|Page 3581 > < LDP Via Read Measuring Value Block (Mechanical Throttle)|Page 3579
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Check the following wire connection for open circuit and short circuit to Ground (GND) or to plus (B+):

Electrical connector terminal

Test box VAG1598/22 socket

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Repair wiring or short circuit as necessary.

If you did not find any malfunction, however the Leak Detection Pump (LDP) did not function during the output Diagnostic Test Mode (DTM):

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Replace Leak Detection Pump (LDP) -V144.

If the LED does not blink, although wiring is OK:

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Replace Engine Control Module (ECM):

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Generate readiness code:

Checking input wiring (vehicles with mechanical throttle activator)

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Switch ignition off.

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Connect test box VAG1598/22 to harness connector, "Checking output wiring."

LDP Via Read Measuring Value Block (Mechanical Throttle)|Page 3581 > < LDP Via Read Measuring Value Block (Mechanical Throttle)|Page 3579