Section 06 ENGINE MANAGEMENT (SDI)
Subsection 03 (COMPONENT INSPECTION, REPLACEMENT AND ADJUSTMENT)
Electrical Test
When depressing the START/RER button, the fuel
pump should run for 2 seconds to build up the
pressure in the system.
If the pump does not work, disconnect the plug
connector from the fuel pump.
Install a temporary connector to the fuel pump
connector. Apply 12 V (+) on pin 2 and (–)onpin
1 to this test harness.
If pump does not run, replace the fuel pump mod-
ule.
Otherwise, probe pin 2 and battery ground of fuel
pump connector on vehicle harness side. When
depressing the START/RER button, you should
read battery voltage for approximately 2 seconds
(then, the voltage will drop). If battery voltage
does not appear, the problem can be in fuse, re-
lay(s), harness or in fuel pump connector. Repair
or replace appropriate part.
Check continuity between pin 1 of the fuel pump
connector on the vehicle harness side and termi-
nal 29 of the ECM connector B. If there is no con-
tinuity the problem is in the harness. Otherwise,
tryanewECM.
In-line Fuel Filter Replacement
Connect VCK (Vehicle Communication Kit)
(P/N 529 035 981). Use B.U.D.S. to release
fuel pressure.
Disconnect fuel filter line assembly from fuel rail
and from fuel supply hose.
Install a new fuel filter line assembly.
Electric Fuel Pump Replacement
Removal
Remove seat. Connect VCK (Vehicle Communi-
cation Kit) (P/N 529 035 981). Use B.U.D.S. to re-
lease fuel pressure.
Drainfueltankasmuchaspossible.
Disconnect fuel supply hose from fuel filter line
ass'y.
Disconnect fuel pump electrical connector.
A33C5RA
2 1
1. Disconnect hose from filter
2. Unplug connector
Disconnect hose coming from diaphragm pump.
A33C5SA
1
1. Disconnect hose
With two screwdrivers or a bent rod holding the
flange, unscrew fuel pump nut using fuel pump
nut wrench (P/N 529 035 899).
mmr2005-081 259
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