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Voltage Supply and Ground to Power Stage

Begin testing by checking the power stage. With the ignition off, disconnect the power stage harness connector. Connect a voltmeter to terminals 1 and 3 as shown in Fig. 3-11. When the ignition is turned on, there should be approximately battery voltage. Turn off the ignition. If there is no voltage, either there is a break in the wiring from terminal 1 to the fuse relay panel, or from terminal 3 to ground. Use the wiring diagrams in ELECTRICAL SYSTEM to check for continuity. Repair any wiring breaks as necessary, then reconnect the power stage connector.

Fig. 3-11. Voltage and ground to power stage being checked at terminals 1 and 3 of connector. Volkswagen special tools shown.

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