Touareg V8-4.2L (AXQ) (2006)
Checking resistances
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Measure resistance between terminals 1 + 3 of diagnostic pump.
Specified value: 640 to 720 ohms
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Measure resistance between terminals 2 + 3 of diagnostic pump.
Specified value: 12.0 to 20.0 ohms
If specified values are not obtained:
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Replace Leak detection pump (LDP) (V144)
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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.
If specified values are obtained:
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Check wires according to wiring diagram.
Checking wiring
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Connect test box to control module wiring harness , connect test box for wiring test.
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Check wires between test box and 3-pin connector for open circuits according to wiring diagram.