Table 1-54 (Continued 2) 5. Difficult cold start Table 1-55 72 S/N Operation Test Results Actions 17 Check if the compressed pressure of the engine cylinder is normal. Yes Next step No Remove the trouble 18 Check if the intake air manifold absolute pressure and temperature sensor is blocked. Yes Repair or replace No Next step 19 Check if the coolant temperature sensor for normal operation. Yes Replace ECU No Repair or replace S/N Operation Test Results Actions 1 Turn the ignition switch to ON. Check if there is trouble information records with a diagnostic instrument. Yes Remove the trouble No Next step 2 Check the coolant for normal temperature with a multimeter (resistance:
between XX and XX) Yes Next step No Replace sensor 3 Turn on the ignition switch. Connect an adapter between the ECU and the harness, and check the voltage of the following pins of the ECU. Is the voltage of the pin J1-12 (crankshaft position sensor) is about 12V? Is the empty pin and the pin J1-54 (idle speed stepper motor A+) is 0V? Yes Next step No Check harness and interface 4 Check the air filter for smoothness. Yes Next step No Replace 5 After start, check if the pressure of the intake air manifold at idle speed is between 35kPa and 65kPa. Yes Next step No Remove leakage for the air intake system 6 Gently step on the throttle, and check if the vehicle can be started easily.
Yes Check throttle and idle speed passage No Next step 7 Before the engine coolant reaches 35°C, take out the idle speed actuator connector, and check if the rotation speed of the engine is decreased. Yes Next step No Replace idle speed actuator 8 Connect the fuel pressure gauge valve (the connection point is related to the vehicle model). Carry out direct grounding for the pin 86 of the fuel pump relay. Turn on the ignition switch and run the fuel pump relay and fuel pump. Check if the fuel pressure is between 250kPa and 300kPa. Yes Next step No 12 9 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 11 No Next step