TT L4-1.8L Turbo (BEA) (2004)
Engine Speed Sensor: Testing and Inspection
With Manufacturer's Scan Tool
Engine Speed (RPM) Signal, Checking
Special tools and equipment
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VAG1526A
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VAG1527B
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VAG1594A
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VAG1598/31
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VAS5051 with VAG5051/1
NOTE: The signal is generated from terminal 37 of the ECM. The engine speed signal is displayed on the tachometer in the instrument cluster.
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Connect test box V.A.G 1598/31 to wiring harness for Engine Control Module (ECM); do not connect Engine Control Module (ECM). See:
Testing and Inspection/Reading and Clearing Diagnostic Trouble Codes/Scan Tool Connecting/With Manufacturer's Scan Tool/Electrical Testing
Using VAG1598/31 Test Box
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Check for open circuit and short to positive (B+) or ground (GND) in following wiring connections:
Test box V.A.G 1598/31
Instrument cluster:
Socket
terminal
37
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Repair any open/short circuit as needed.