Engine Electrical System

contaminated with water. No Proceed to Step 16.
Yes Proceed to next step.
11
Verify that the fuel pressure is lower than
350kPa.
No Proceed to Step 15.
Yes Proceed to next step.
12
Turn off the fuel manometer valve. Connect
the ignition switch again to re-operate the
fuel pump in order to verify that the fuel
pressure can be established.
No Proceed to Step 14.
Yes
Replace the pressure
regulator.
13
Turn on the fuel manometer valve and
clamp the fuel return pipe with the fuel tube
clamp to stop the fuel return in order to
verify and see whether the fuel pressure can
be established quickly.
No
Repair or replace the
fuel injector or the
fuel pipe.
Yes
Repair or replace the
fuel inlet pipe
14
Verify that the fuel inlet pipe has any
leakage or blockage.
No
Replace the fuel
pump.
Yes
Repair or replace the
fuel return pipe.
15
Verify that the fuel return pipe has any
leakage or bending.
No
Replace the fuel
pressure regulator.
Yes Proceed to next step.
16
Verify that the data of the absolute pressure
sensor of air intake manifold and air intake
temperature sensor are normal.
No Replace the sensor.
Yes Proceed to next step.
17
Verify that the ignition coil, the high voltage
cable and the spark plug are normal.
No Replace or adjust
Yes
Inspect the A/C
system 18 Verify that it is caused by the A/C system.
No Replace the ECU.
E-87
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