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16.4.3.2 Symptom - Startup failure
a)
Switch the ignition switch to "ON" gear, and check whether engine fault indicator blinks.
If not
flash:
Inspect the fuse and ground wire,
Check whether ECU patch plug is firmly connected,
Use the actuator of the diagnosis tester to check whether the light and the line are normal,
Check and repair the light bulb and the line,
Use another ECU to judge.
If flash:
Connect the diagnosis tester to the diagnosis port of the system.
b)
Check whether the diagnosis tester can communicate with the system.
If not:
Inspect the fuse and ground wire,
Check whether ECU patch plug is firmly connected,
Test whether the diagnosis tester can work properly on another normal car;
Use another ECU to judge.
If yes:
Eliminate faults as indicated by the diagnosis tester,
c)
Check the fault of ignition system - whether spark plug is normal.
If not:
Inspect whether high voltage wire and spark plug are firmly plugged or damaged,
Use the other ignition coil assembly to judge,
Use another ECU to judge.
If yes:
Check whether high voltage wire is properly connected to the ignition coil and spark plug.
d)
Inspect the fault of fuel supply system,
Check whether the fuel pump works (you can hear the sound of fuel pump operation around the fuel tank when
starting the engine);
If not:
Check whether the fuel pump relay works properly,
Check whether crankshaft position sensor is connected and works normally,
Use another ECU to judge,
Check the circuit of fuel pump.
If yes:
1)
Inspect whether fuel supply pressure is greater than 220Kpa,
2)
Insufficient
pressure:
Check whether fuel tank has enough fuel,
Check whether it is necessary to replace the gasoline filter (Note:
Gasoline filter of EFI is replaced every 7,000 ~ 10,000km),
Check whether fuel supply pipe and return pipe are damaged;
3)
Normal
pressure:
Check whether the nozzle control circuit is abnormal,
Whether the nozzle is necessary to be cleaned,
e)
Confirm whether the cylinder has excessive fuel.
If yes:
•
Fully open the accelerator, turn on the engine, and the engine may work after a few seconds
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