FUEL INJECTION CONTROL [LF, L3]

id0140001017a6

Outline

• There are two types of injection timing control: "synchronized injection" and "non-synchronized injection."

• Rear oxygen sensor feedback correction has been added.

Injection Timing

Synchronized injection

• The PCM determines fuel injection timing and amount synchronized with the crank angle, and based on the following signals during the intake/exhaust stroke of each cylinder.

- CKP, MAF, ECT, IAT

Non-synchronized injection

• PCM determines fuel injection timing and amount based on the following signals (not synchronized with the crank angle).

- TP, MAF, ECT, IAT

Correction

Rear HO2S feedback correction

• Purpose: To control air/fuel ratio close to increase the performance of the catalytic converter

• Conditions: At feedback zone

• Action: Rear HO2S output voltage