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– Compare quantity of fuel delivered with specification.
9) Delivery rate cm3/30 seconds
10) Voltage at fuel pumps with engine not running and pump running (approx. 2
volts less than battery voltage).
If the minimum delivery rate is again not attained
– Remove fuel delivery unit and check for dirt in filter strainer.
Only if still no fault has been detected:
– Right fuel pump is defective. Renew fuel delivery unit
⇒ page 131
.
If the minimum delivery rate is not reached:
⇒ page 144
1.11.3
Checking delivery quantity of left pump
– Reconnect remote control connector -2-.
– Disable activation of right pump:
– To do this, pull connector -1- for remote control out of relay
socket for right pump.
– Empty measuring container.
– Operate remote control for 30 seconds while measuring bat‐
tery voltage.
– Compare quantity of fuel delivered with specification.
11) Delivery rate cm3/30 seconds
12) Voltage at fuel pumps with engine not running and pump running (approx. 2
volts less than battery voltage).
If the minimum delivery rate is again not attained
– Remove fuel delivery unit and check for dirt in filter strainer.
Only if still no fault has been detected:
– Left fuel pump defective; renew fuel delivery unit
⇒ page 134
.
1.11.4
Checking current draw of pumps
– Check current draw of each fuel pump separately as follows:
– Install intake hose between air mass meter - G70- and throttle
valve module - J338- .
– Reconnect all disconnected fuel lines.
Phaeton 2003 ➤
6-cylinder injection engine - Edition 02.2014
144
Rep. gr.20 - Fuel supply system
