Corrado SLC & Passat

Remove fuel pump relay from relay panel. On Corrado and Passat, activate fuel pumps using Remote Control (VAG 1348/3A). On Jetta III, activate fuel pumps using Remote Control (US 4480/3). On all models, measure voltage being applied to fuel pump when activating with remote control. Record voltage.
Fuel volume is relative to voltage applied to fuel pumps. Activate fuel pumps for 30 seconds. Compare volume with values in FUEL PUMP PERFORMANCE table.

FUEL PUMP PERFORMANCE

Application

Pressure psi (kg/cm² )

Min. Vol. In 30 Sec. Pts. (L)

Corrado SLC ⁽¹⁾

58 (4.0)

1.0-1.4 (0.5-0.7)

EuroVan,⁽¹⁾

43 (3.0)

1.0-1.4 (0.5-0.7)

Passat ⁽¹⁾

58 (4.0)

1.0-1.4 (0.5-0.7)

⁽¹⁾	Using Adapter Cable (VAG 1348/3-2) between battery positive terminal and terminal No. 4 of fuel pump relay socket. Fuel pump energized, with 10-12 volts at fuel pump, and engine off.