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Idle Stabilization System (VANAGON)
- Attach Test Meter (VW 1315/2) and Adapter (US 1119) to idle stabilization valve. Set meter to milliampere scale. Start engine. Observe test meter while turning A/C control switch to ON position. If milliampere reading increases, system is okay.
- If milliampere reading does not increase, turn ignition switch Off. Connect test light between terminals No. 2 and No. 5 of idle stabilization control unit connector. See Fig 1
. Start engine and cycle A/C switch On and Off.
- Test light should be on when A/C switch is in ON position. If okay, replace idle stabilization valve. If light does not go on, repair wiring between idle stabilization control unit terminal No. 2 and A/C compressor clutch.
Courtesy of VOLKSWAGEN UNITED STATES, INC.