Jetta Sedan V6-2.8L (BDF) (2003)
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Switch on ignition.
Specification: at least 4.5 V
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Switch off ignition.
If the specifications are not obtained:
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Remove wiper arms and cowl panel:
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Connect VAG 1598/31 test box to control module wiring harness. The Motronic Engine Control Module (ECM) -J220- remains disconnected.
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Check wiring for open circuit between test box socket and connector referring to Electrical Wiring Diagrams:
Terminal 1 and socket 92
Terminal 2 and socket 83
Terminal 3 and socket 117
Terminal 4 and socket 84
Terminal 5 and socket 118
Terminal 6 and socket 91
Wire resistance: max. 1.5 ohms
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Additionally check wiring for short to one another, to vehicle ground (GND) and to battery positive.
Specification: infinity ohms
If no wiring malfunction is detected:
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Check Motronic Engine Control Module (ECM) -J220- voltage supply .
See: Powertrain Management/Computers and Control Systems/Testing and Inspection/Component Tests and General Diagnostics/Engine Control
Module (ECM) Voltage Supply, Checking
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Check DTC memory, repair malfunctions if necessary and then erase DTC memory.
See: Powertrain Management/Computers and Control Systems/Testing and Inspection/Reading and Clearing Diagnostic Trouble Codes/Reading
Diagnostic Trouble Codes
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Read readiness code. If the DTC memory has been erased or the Motronic Engine Control Module (ECM) -J220- was disconnected from battery
positive (B+), the readiness code must be generated again.
See: Powertrain Management/Computers and Control Systems/Testing and Inspection/Monitors, Trips, Drive Cycles and Readiness Codes
See: Powertrain Management/Computers and Control Systems/Testing and Inspection/Monitors, Trips, Drive Cycles and Readiness Codes