Check Item | Data display | Check conditions | Check content | Test specification |
Injector | Drive time | Engine: Cranking | 0°C (32°F) | Approx. 17 ms |
20°C (68°F) | Approx. 35 ms | |||
80°C (176°F) | Approx. 8.5 ms |
Check Item | Data display | Check conditions | Engine state | Test specification |
Injector | Drive time | ● Engine coolant temperature: 80 to 95°C (176 to 205°F) ● Lamps, electric cooling fan, accessory modules: All OFF ● Transaxle: Neutral (P range for vehicle with A/T) ● Steering wheel: Neutral | Idle rpm | 2.2~2.9 ms |
2,000 rpm | 1.8~2.6 ms | |||
Rapid racing | To increase |
The injector drive time is when the supply voltage is (greater than) 11V and the cranking speed is less than 250 rpm.
When the engine coolant temperature is lower than 0°C (32°F), the PCM fires all four cylinders simultaneously.
When the vehicle is new (within initial operation of about 500 km [300 miles]), the injector drive time may be about 10% longer.
Check Item | Item No. | Drive content | Check condition | Normal state |
Injector ● Actuator test | 01 | No. 1 injector shut off | Engine: Idling after warm-up (Shut off the injectors in sequence during and after engine warm-up; checkthe idle condition) | Idle should become unstable as injector shuts off. |
02 | No. 2 injector shut off | |||
03 | No. 3 injector shut off | |||
04 | No. 4 injector shut off | |||
05 | No. 5 injector shut off | |||
06 | No. 6 injector shut off |
If the engine is hard to start when hot, check for fuel pressure and injector leaks.
If the injectors do not operate when the engine is cranked, then check the followings:
● Defective power supply circuit to the PCM, faulty ground circuit ● Defective control relay ● Defective crankshaft position (CKP) sensor or camshaft position (CMP) sensor |
If there is any cylinder whose idle state remains unchanged when the fuel injectors are cut one after another during idling, check for thefollowing items about that a cylinder.
● Injector and harness ● Ignition plug and high tension cable ● Compression pressure |
If the injection system is OK but the injector drive time is out of specification, check for the following items.
● Poor combustion in the cylinder (faulty ignition plug, ignition coil, compression pressure, etc.) ● Loose EGR valve seating |
