Mechanics

TOYOTA CAMRY IGNITION COIL PROBLEM

2002 Toyota Camry • 24,100 miles

Car sometimes stumbles like its starving for fuel, now it just dies going down the road, dash lights come on like it died. Put it in nuetral and it revs back to idle. Cleaned maf sensor to no avail. Throws code 1305 but does not stumble like its electrical misfire. Wondered if maf problems could throw this error code.
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Bamaj
January 29, 2013.



A Direct Ignition System (DIS) has been adopted. The DIS improves the ignition timing accuracy, reduces the high-voltage loss, and enhances overall reliability of the ignition system by eliminating the distributor.
The DIS is a 1-cylinder ignition system which ignites one cylinder with one ignition coil. In the 1-cylinder ignition system, the spark plug is connected to the end of the secondary winding. High voltage generated in the secondary winding is applied directly to the spark plug. The spark of the spark plug passes through from the center electrode to the ground electrode.
The ECM determines ignition timing and outputs the ignition signals (IGT) of each cylinder. Based on IGT signals, the power transistors cut off the current to the primary coil in the ignition coil. At the same time, the igniter also sends an ignition confirmation signal (IGF) as a fail-safe measurement to the ECM.

INSPECTION PROCEDURE

HINT: If DTC P1300/14 is displayed, check No.1 ignition coil with igniter circuit.
If DTC P1305/15 is displayed, check No.2 ignition coil with igniter circuit.
If DTC P1310/14 is displayed, check No.3 ignition coil with igniter circuit.
If DTC P1315/15 is displayed, check No.4 ignition coil with igniter circuit.
Read freeze frame data using the hand-held tester or OBD II scan tool, as freeze frame data records the engine conditions when the malfunction is detected. When troubleshooting, it is useful for determining whether the vehicle was running or stopped, the engine was warmed up or not, the air-fuel ratio was lean or rich, etc. At the time of the malfunction.

ASEMaster6371
Jan 29, 2013.