A4 Sedan L4-2.0L Turbo (BPG) (2005)
Leak Detection Pump: Testing and Inspection
Leak Detection Pump (LDP) -V144-, Checking
Leak Detection Pump (LDP) V144, Checking
Special tools, testers and auxiliary items required
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Multimeter V.A.G 1526 or equivalent.
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Test Box 105 Pin VAG1598/42.
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Adapter Lead Vag1598/39 VAG1598/39.
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Adapter Lead Vag1598/39 VAG1598/39.
Test requirements
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The Leak Detection Pump (LDP) V144 fuse OK. .
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The ignition switched off.
Procedure
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Remove the left rear wheel housing liner.
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Disconnect the electrical harness connector - 3 - .
Checking internal resistance
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Using the Multimeter V.A.G. 1526 A or equivalent, check them Leak Detection Pump (LDP) V144 for resistance as follows:
Leak Detection Pump (LDP) -V144- terminal
Specified value
- 1 - + - 3 -
640 to 720 Ohms
- 2 - + - 3 -
15 to 17 Ohms
If the specifications are not obtained:
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Replace the Leak Detection Pump (LDP) -V144- .
If the specified values are obtained:
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Check the voltage supply of the Leak Detection Pump (LDP) -V144- .
Checking voltage supply
NOTE: The voltage for the Leak Detection Pump (LDP) -V144- is supplied via the Engine Control Module (ECM) J623.