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– To do this, pull connector -2- for remote control out of relay
socket for left pump.
– Repeat check.
If the pressure drops further:
– Right fuel pump is defective. Renew fuel delivery unit
⇒ page 131
.
If pressure drops further:
⇒ page 147
1.11.7
Checking non-return valve of left pump
– Reconnect supply line on right side -2-.
– On right side, separate supply line -4- to left pump.
– Connect pressure gauge - V.A.G 1318- (lever perpendicular
to direction of flow) with adapter -V.A.G 1318/23- and -
V.A.G 1318/17- on hose -1- to pump.
– Reconnect remote control connector -2-.
– Disable activation of right fuel pump.
– To do this, pull connector -1- for remote control out of relay
socket for right pump.
– Repeat check.
If the pressure drops further:
– Left fuel pump defective; renew fuel delivery unit
⇒ page 134
.
Phaeton 2003 ➤
6-cylinder injection engine - Edition 02.2014
1. Parts of fuel supply system
147
