SHOP MANUAL
Engine
Ch 1 page 206
The fuel system is very sensitive to dirt. It is therefore very important that everything is as clean as possible
when work is carried out on the fuel system.
Using the Troubleshooting Guide
Start troubleshooting by looking at troubleshooting tree S-a. This troubleshooting tree helps you to choose
where to start troubleshooting.
The troubleshooting trees are read from the top down. The boxes contain instructions you can follow. These
instructions sometimes refer to other more detailed instructions further on in the document. After having carried
out the instructions, you should continue to the next set of instructions indicated by the arrows.
S-a Basic check
Before and after troubleshooting the XPI fuel system, check the following:
S-a Basic check
Before and after troubleshooting the XPI fuel system, check the following:
Check any fault codes using SDP3.
There are
no active
fault codes
There are active
fault codes
Troubleshoot according to the
troubleshooting text.
Can the engine be started?
There may be a fault in the fuel
system. If there is no other XPI-
related fault, the cause may be
outside the fuel system.
Start troubleshooting the fuel
system from S-b.
Yes
No
The engine starts but there are
inactive fault codes or other
indications of faults in the fuel system.
There may be a fault in the fuel
system. Run the engine until
warm and check that no new fault
codes have been generated. If not,
start by troubleshooting from L-c.
The cause of the problem is not
the fuel system. Finish trouble-
shooting and continue looking for
other causes of the fault.
Yes
No
Troubleshooting fuel system
Troubleshooting Guide
Figure 380
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