Jetta Sedan L4-1.9L DSL Turbo (BEW) (2005)
Transmission Temperature Sensor/Switch: Testing and Inspection
Transmission Fluid Temperature Sensor, Checking
Recommended special tools and equipment
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V.A.G 1526 multimeter or V.A.G 1715 multimeter
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V.A.G 1594 connector test kit
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Wiring diagram
Requirements
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Respective fuses must be OK:
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Selector lever must be in -P- position.
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All electrical consumers such as, lights and rear window defroster must be switched off.
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Parking brake must be engaged.
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Ground (GND) connections to transmission must be OK.
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Ignition switched off.
Check Transmission Fluid Temperature Sensor
Vehicles with 01M transmission
Test sequence
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Disconnect 12-pin harness connector at transmission.
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: 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: Computers and Control Systems/Testing and Inspection/Monitors, Trips, Drive Cycles and Readiness Codes
If harness connector is OK:
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Check resistance of Transmission Fluid Temperature Sensor -G93-.
Check sensor resistance.
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Re-connect 12-pin connector.
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Connect test box to control module wiring harness, connect test box for wiring test. See: Computers and Control Systems/Testing and
Inspection/Reading and Clearing Diagnostic Trouble Codes/Scan Tool Connecting/Test Box, Connecting For Wiring Test
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Measure resistance of Transmission Fluid Temperature Sensor -G93- at test box between sockets 6 + 67:
If one of the specified values is not obtained:
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Check wires to Transmission Control Module (TCM) according to wiring diagram.
Checking wires to Transmission Control Module (TCM)
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Disconnect 12-pin harness connector at transmission.