Table 1-64 (Continued)
S/N Operation Test Results Actions
Yes Next step
11 Check if the fuel pressure is lower than 250kPa.
No 15
Yes Next step
12
Close the fuel gauge valve. Turn on the ignition switch
again and keep the fuel pump working for 3 seconds.
Check if fuel pressure can be produced.
No 14
Yes Replace pressure regulator
13
Turn on the fuel gauge valve, and block the fuel return
pipe. Check if the fuel pressure is quickly produced.
No
Repair or replace fuel
injector or fuel pipe
Yes
Repair or replace fuel intake
pipe
14 Check the fuel intake pipe for leakage or blockage.
No Replace fuel pump
Yes
Repair or replace fuel return
pipe
15 Check if the fuel return pipe is blocked or bent.
No Replace pressure regulator
Yes Next step
16
Check the data of the intake air manifold absolute
pressure and intake air temperature sensor. Is it OK?
No Replace sensor
No Next step
17
Check the spark plug, high voltage wire, distributor,
ignition coil for normal operation.
No Replace or adjust
Yes Check A/C system
18 Does it caused by A/C system?
No Replace ECU
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