Beetle L4-1.9L DSL Turbo (ALH) (1998)
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Disconnect connector at solenoid valve for Exhaust Gas Recirculation (EGR).
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Measure resistance between terminals of valve.
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Measure resistance at valve.
Specified value: 14...20 ohms
NOTE: Resistance at room temperature is in lower specified range, resistance at operating temperature is in upper specified range.
If specified value is not obtained:
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Replace EGR Vacuum Regulator Solenoid Valve -N18-.
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Erase DTC memory of control module for Diesel-Direct fuel injection system, 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 specified value is obtained:
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Switch ignition on.
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Measure voltage supply of valve at connector terminal 1 and at engine Ground (GND).
Specified value: approx. battery voltage
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Switch ignition off.
If specified value is not obtained:
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Connect test box to control module wiring harness, connect test box for wiring test.
Vehicles with 80-pin control module