Jetta L4-1.8L Turbo (AWP) (2004)
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Check wires between test box and 6-pin connector (to control module) for open circuit according to wiring diagram.
Terminal 1 + socket 70
Terminal 2 + socket 71
Terminal 5 + socket 51
Terminal 6 + socket 52
Wire resistance: max: 1.5 Ohms
Continuation for all vehicles
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Also check wires for short circuit to B+ and Ground (GND).
Specified value: Infinite Ohms
If no malfunctions are found in wires:
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Replace Heated Oxygen Sensor (HO2S) -G39- Bank 1 before catalytic converter, item 8
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Erase DTC memory of Engine Control Module (ECM), Diagnostic mode 4: Reset/erase diagnostic data. See: Testing and Inspection/Scan Tool
Testing and Procedures/With Generic Scan Tool/Diagnostic Mode 4: Reset/Erase Diagnostic Data
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Generate readiness code. See: Testing and Inspection/Monitors, Trips, Drive Cycles and Readiness Codes
Heater Check
Special tools and equipment
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VAG1551 scan tool or VAG1552 mobile scan tool with VAG1551/3B cable
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VAG1598/31 test box
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VAG1526 hand multimeter or VAG1715 multimeter
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VAG1594 adapter set
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Wiring diagram
Check conditions
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All fuses must be OK.
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The battery voltage must be at least 11.5 V.
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Fuel pump relay must be OK
Test sequence
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Connect VAG1551 scan tool (VAG1552). Start engine and select "Address word" 01 of engine control module. When doing this the engine must