200 Quattro Wagon L5-2226cc 2.22L SOHC Turbo (MC) (1989)
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Vacuum Pump: Testing and Inspection
Fig. 1 Control Unit Harness Connector Terminal Identification
1.
Turn ignition switch to the On position.
2.
Connect a jumper wire between control unit harness connector terminal 4 and ground, refer to Fig. 1.
3.
If the pump does not run, replace defective vacuum pump.
4.
If the pump runs, refer to VACUUM PUMP VENT VALVE CHECK.
