volkswagen Workshop Repair Guides

Volkswagen Workshop Service and Repair Manuals

Catalytic Converter > < Air Injection Pump|Specifications|Page 3543
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If Tester Lights Up (voltage Supply OK):

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Replace solenoid valve.

If Tester Does Not Light Up:

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Check wiring for open circuit between Test Box socket 50 and terminal 2 of 2 pin harness connector using wiring diagram. 

Resistance: 1.5 Ohms maximum.

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Check wiring between central electric and solenoid valve harness connector (terminal 1) using wiring diagram.

-

Connect 2-pin harness connector.

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Check DTC memory, then erase.

Catalytic Converter > < Air Injection Pump|Specifications|Page 3543