Check for open in harness and connector between throttle position sensor and ECM See page IN

NG \ Open in harness between ECM and throttle position sensor.

Confirm connection at ECM. If OK, replace ECM.

DI3A0-04

DTC

P1300

Ignition Circuit Malfunction

CIRCUIT DESCRIPTION

A DIS (Direct Ignition System) has been adopted. The DIS improves the ignition timing accuracy, reduces high-voltage loss, and enhances the overall reliability of the ignition system by eliminating the distributor. The DIS is a 2-cylinder simultaneous ignition system which ignites 2 cylinders simultaneously with one ignition coil. In the 2-cylinder simultaneous ignition system, each of the 2 spark plugs is connected to the end of the secondary winding. High voltage generated in the secondary winding is applied directly to the 2 spark plugs. The sparks of the 2 spark plugs pass simultaneously from the center electrode to the ground electrode.

The ECM determines ignition timing end outputs the ignition signals (IGT) for each cylinder. Based on IGT signals, the igniter controls the primary ignition signals (IGC) for all ignition coils. At the same time, the igniter also sends an ignition confirmation signal (IGF) as a fail-safe measure to the ECM.

Camshaft

Position

Sensor

Crankshaft

Position

Sensor

Various Sensor

From Battery IGT1

IGT2

Igniter

IGC1

IGC2

To Tachometer

Ignition Coil

Spark Plug

No.4 Cylinder

No.2 Cylinder^

No.3 Cylinder

"1

.QnnRQ-

To Tachometer

DTC No.

DTC Detection Condition

Trouble Area

P1300

No IGF signal to ECM while engine is running

«Open or short in IGF or IGT circuit from igniter to ECM

«Igniter

«ECM

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