14. Poor acceleration Table 1-64 84 S/N Operation Test Results Actions 1 Check the clutch, tyre pressure, brake, tyre size and four-wheel alignment for normal operation. Yes Repair No Next step 2 Check if the throttle can be fully opened. Yes Next step No Replace or repair throttle 3 Turn the ignition switch to ON. Check if there is trouble information records with a diagnostic instrument. Yes Remove the trouble No Next step 4 Run the engine at an idle speed. Check if the ignition advance angle is normal after the coolant reaches normal operation. Yes Next step No Adjust ignition advance angle 5 Turn the ignition switch to ON. Connect an adapter between the ECU and the harness.
Check the voltage of the pin J1-42 (intake air manifold absolute pressure sensor output), J1-27 (intake air temperature sensor output), J1-43 (coolant temperature sensor output), J1-62, J1-06, J1-38 (oxygen sensor output), J1-01 (ignition switch), J1-54, J1-33, J1-53, J1-34 (output to idle speed actuator) of the ECU. Is it OK? Yes Next step No Repair or replace harness 6 Run the engine at an idle speed. Check if the intake air pressure is between 35kPa and 65kPa. Yes Next step No Check and repair 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 about 300kPa.
Yes Next step No 11 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. Yes 10 No Next step 9 Wash the fuel injector and check the fuel injector again for normal operation. Yes Next step No Replace fuel injector 10 Chek if the fuel is wrong or contains water. Yes Replace fuel No 16