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Differential Pressure Regulator Electrical System
- Connect Pressure Gauge (VW 1318) as described previously in SYSTEM PRESSURE. See Figure
. Close pressure gauge valve. Disconnect differential pressure regulator harness connector.
- Using Adapter (VW 1315 A/1), connect Multimeter (US 1119) to differential pressure regulator and harness connector. See Fig 1
. Set multimeter to 200-mA DC scale. Turn ignition on.
- Multimeter should read 100 mA. Pressure gauge should read 67-80 psi (5.5-5.9 kg/cm2
). If pressure is not as specified, check differential pressure regulator wiring and connectors. If wiring and connectors are good, replace differential pressure regulator.
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