Jetta Wagon L4-1.8L Turbo (AWP) (2005)
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Check wires between test box and 12-pin connector to Transmission Control Module (TCM) for open circuit according to wiring diagram.
Terminal 1 + socket 67
Terminal 12 + socket 6
Wire resistance: max. 1.5 Ohms
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Check wires for short circuit to each other, to vehicle Ground (GND) and to B+.
Specified value: Infinite Ohms
If no malfunctions are found in wires:
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Replace circuit board with integrated Transmission Fluid Temperature Sensor -G93-.
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Erase DTC memory of Transmission Control Module (TCM), Diagnostic mode 4: Reset/erase diagnostic data. See: Powertrain
Management/Computers and Control Systems/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: Powertrain Management/Computers and Control Systems/Testing and Inspection/Monitors, Trips, Drive Cycles and
Readiness Codes
Vehicles with 09A transmission
NOTE: Sensor is located inside the transmission and is not accessible from the outside.
Test sequence
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Disconnect 20-pin harness connector -2-.
Observe safety precautions.
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Check harness connector for contact corrosion and ingress of water.
If harness connector is not OK:
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Repair the malfunction.
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Erase DTC memory of Transmission Control Module (TCM), Diagnostic mode 4: Reset/erase diagnostic data. See: Powertrain
Management/Computers and Control Systems/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: Powertrain Management/Computers and Control Systems/Testing and Inspection/Monitors, Trips, Drive Cycles and
Readiness Codes
If harness connector is OK.
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Check wires to Transmission Control Module (TCM) according to wiring diagram.