Fuel Line Pressure Inspection; Low Pressure Line (From The Fuel Tank To The High Pressure Fuel Pump) - Mazda CX-7 2007 Workshop Manual

1. Start the fuel pump using the following procedure.
Using M-MDS
1. Connect the M-MDS to the DLC-2.
2. Using the simulation function "FP", start the
fuel pump.
Without using M-MDS
1. Disconnect the negative battery cable.
2. Remove the fuel pump relay.
Caution
• Short the specified terminals because
shorting the wrong terminal of the main
fuse block may cause malfunctions.
3. Using a jumper wire, short fuel pump relay
terminals C and D in the main fuse block.
4. Connect the negative battery cable and
operate the fuel pump.
2. Pressurize the system in this manner for at least
5 min to be sure there is no leakage.
• If there is fuel leakage, inspect the fuel hoses,
hose clamps, and fuel pipe sealing surface,
and replace if necessary.
3. After repair, assemble the system and repeat
Steps 1 to 3.
End Of Sie
FUEL LINE PRESSURE INSPECTION[L3 WITH TC]

Low Pressure Line (From the Fuel Tank to the High Pressure Fuel Pump)

Warning
• Fuel line spills and leakage are dangerous. Fuel can ignite and cause serious injuries or death.
Fuel can also irritate skin and eyes. To prevent this, always complete the "BEFORE REPAIR
PROCEDURE". (See01-14-4 BEFORE REPAIR PROCEDURE[L3 WITH TC].)
Caution
• Disconnecting/connecting the quick release connector without cleaning it may possibly cause
damage to the fuel pipe and quick release connector. Always clean the quick release connector
joint area before disconnecting/connecting using cloth or soft brush, and make sure that it is free
of foreign material.
1. Complete the "BEFORE REPAIR PROCEDURE".
(See01-14-4 BEFORE REPAIR PROCEDURE[L3 WITH TC])
2. Disconnect the vacuum hose from the intake manifold that connecting to the power brake unit.
3. Disconnect the negative battery cable.
Caution
• The quick release connector may be damaged if the tab is turned too far. Do not turn the tab over
the stopper.
4. Disconnect the quick release connector from the fuel tank. (See01-14-19 QUICK RELEASE CONNECTOR
REMOVAL/INSTALLATION[L3 WITH TC].)
5. Push the SST quick release connector into the fuel pipe and plastic fuel hose into the SST until a click is heard.
FUEL SYSTEM [L3 WITH TC]
DLC-2
MAIN FUSE BLOCK
(FUEL PUMP RELAY)
A
E
C
D
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