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9-7
E
TRBL
ANLS
TROUBLE SHOOTING FOR HIGH-PRESSURE
DIRECT INJECTION
TROUBLE SHOOTING FOR HIGH-PRESSURE DIRECT INJECTION
9
Items
Symptoms
1. Poor starting/
Engine will
not start
1. No firing. The starter motor cranks the engine, but no firing is
generated in the cylinder.
2. The firing is generated in the cylinder, but the engine soon stops.
3. Start-up time is too long. The engine will not start-up easily.
1. Check the medium/high-pressure fuel lines.
2. Check the ignition system.
1) Check for fuel line
leaks
2) Check the fuel pressure
(vapor separator and
mechanical fuel pump)
3) Check the operation of
the fuel injector
4) Check the injector
driver
5) Check the diagnosis
cord
Fuel pressure is
out of specification
1
Check the fuses
2
Check the electric
fuel pump operation
3
Check the main relay
4
Check the driver
relay
5
Check the pressure
regulator
6
Check the mechani-
cal fuel pump
1) Check the wire harness
2) Check the ignition spark
3) Check the ignition coil
4) Check the CDI unit output
peak voltage
5) Check the pulser coil output
peak voltage
6) Check the rectifier/regulator
output peak voltage
7) Check the lighting coil output
peak voltage