Table 1-63 (Continued)
S/N Operation Test Results Actions
Yes Next step
5
Turn the ignition switch to ON. Connect an adapter
between the ECU and the harness. Check the voltage
of the pin J1-24 (signal output end of the throttle
position sensor), J1-05 (grounding end), J1-20 (as the
power supply for 4.5-5V sensor). Is it OK?
No Repair or replace harness
Yes Next step
6
Run the engine at an idle speed. Check if the ignition
advance angle is normal after the coolant reaches
normal operation.
No
Adjust ignition advance
angle
Yes Next step
7
Connect the fuel pressure gauge valve. Short-circuit
the pin J1-47 and the pin J1-73 of the fuel bump relay,
and run the fuel pump. Check if the fuel pressure is
between 250 kPa and 300kPa.
No 11
No 10
8
Connect the battery and the fuel injector with a special
connector. With the voltage supply of 12V, check the
fuel injector for normal operation.
No Next step
Yes Next step
9
Wash the fuel injector and check the fuel injector
again for normal operation.
No Replace fuel injector
Yes Replace fuel
10 Check if the fuel is wrong or contains water.
No 16
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 fuel 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 Replace or clean up
16 Check if the exhaust system is blocked.
No Replace ECU
To Next Page
Loading...
