Beetle L4-1.9L DSL Turbo (ALH) (1998)
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Connect test box to control module wiring harness, connect test box for wiring test. See: Powertrain Management/Computers and Control
Systems/Testing and Inspection/Reading and Clearing Diagnostic Trouble Codes/Scan Tool Connecting/With Generic Scan Tool/Test Box,
Connecting For Wiring Test
Vehicles with 80-pin control module
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Check wires between test box and 4-pin connector for open circuit according to wiring diagram.
Terminal 1 + socket 70
Terminal 3 + socket 54
Wire resistance: max. 1.5 ohms
Vehicles with 121-pin control module
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Check wires between test box and 4-pin connector for open circuit according to wiring diagram.
Terminal 3 + socket 112
Terminal 4 + socket 104
Wire resistance: max. 1.5 ohms
Continuation for all vehicles
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Also check wires for short circuit to each other, to vehicle Ground (GND) and to B+.
Specified value: Infinite Ohms
If no malfunctions are detected in wires:
Vehicles with 80-pin control module
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Disconnect 4-pin connector from Engine Coolant Temperature (ECT) Sensor -G62- with Engine Coolant Temperature (ECT) Sensor -G2- (arrow).