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Measure resistance between 10 pin harness connector terminals and test box sockets. See INJECTION INJECTION PUMP QUALITY ADJUSTER (N146) / TEST BOX SOCKET 5. Resistance should be less than 1.5 ohms for each reading. If resistance is as specified, go to next step. If any resistance is not as specified, repair open in wiring between 10 pin Injection Pump Quality Adjuster 6. Check terminals No. 5 and 6 for short to each other. Check terminals No. 5 and 6 for short to B+. Check terminals No. 5 and 6 for short to ground. If wiring is okay, go to next step. If wiring is not okay, repair 7. If resistances are as specified and all wiring is okay, replace faulty ECM. After repairs, erase DTC memory. See CLEARING DIAGNOSTIC TROUBLE CODES (FUNCTION 05) under SELF DTC P1569/17977 & VAG DTC 00671 Code Definition DTC P1569/17977 VAG DTC 00671 NOTE: Test box socket numbers correspond to ECM pin numbers. Injection Pump Quality Adjuster (N146) VAG Test Box Socket 5 1 5 2 6 116 6 121 NOTE: For connector terminal wire colors, see appropriate WIRING DIAGRAM under NOTE: Before replacing any component, ensure all connectors at component and ECM
2003 Volkswagen New Beetle GLS 2002-2004 ENGINE PERFORMANCE Self-Diagnostics - 1.9L Turbo Diesel - Beetle, Golf & Jetta (Engine Code ALH)
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