DTC P0351-13: Ignition Coil "A" Circuit Open; DTC P0352-13: Ignition Coil "B" Circuit Open; DTC P0353-13: Ignition Coil "C" Circuit Open; DTC P0354-13: Ignition Coil "D" Circuit Open [01/2019 - 04/2020]: Description

WARNING: This page is about a different variant/trim than selected.

HINT:

These DTCs indicate malfunctions relating to the primary circuit.
If DTC P0351-13 is output, check the No. 1 ignition coil assembly circuit.
If DTC P0352-13 is output, check the No. 2 ignition coil assembly circuit.
If DTC P0353-13 is output, check the No. 3 ignition coil assembly circuit.
If DTC P0354-13 is output, check the No. 4 ignition coil assembly circuit.

A Direct Ignition System (DIS) is used on this vehicle.

The DIS is a 1-cylinder ignition system in which each cylinder is ignited by one ignition coil assembly and one spark plug is connected to the end of each secondary wiring. A powerful voltage, generated in the secondary wiring, is applied directly to each spark plug. The spark of the spark plugs passes from the center electrode to the ground electrodes.

The ECM determines the ignition timing and transmits the ignition (IGT) signals to each cylinder. Using the IGT signal, the ECM turns the power transistor inside the igniter on and off. The power transistor, in turn, switches the current supplied to the primary coil on and off. When the current to the primary coil is cut off, a powerful voltage is generated in the secondary coil. This voltage is applied to the spark plugs, causing them to spark inside the cylinders. As the ECM cuts the current to the primary coil, the igniter sends back an ignition confirmation (IGF) signal to the ECM for each cylinder ignition.

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

DTC No.	Detection Item	DTC Detection Condition	Trouble Area	MIL	Memory	Note
P0351-13	Ignition Coil "A" Circuit Open	No IGF signal to the ECM while the engine is running (1 trip detection logic).	Open or short in IGF1 or IGT1 circuit between ignition coil assembly and ECM No. 1 ignition coil assembly ECM	Comes on	DTC stored	SAE Code: P0351 DTC for Mexico Models: Applies
P0352-13	Ignition Coil "B" Circuit Open	No IGF signal to the ECM while the engine is running (1 trip detection logic).	Open or short in IGF1 or IGT2 circuit between ignition coil assembly and ECM No. 2 ignition coil assembly ECM	Comes on	DTC stored	SAE Code: P0352 DTC for Mexico Models: Applies
P0353-13	Ignition Coil "C" Circuit Open	No IGF signal to the ECM while the engine is running (1 trip detection logic).	Open or short in IGF1 or IGT3 circuit between ignition coil assembly and ECM No. 3 ignition coil assembly ECM	Comes on	DTC stored	SAE Code: P0353 DTC for Mexico Models: Applies
P0354-13	Ignition Coil "D" Circuit Open	No IGF signal to the ECM while the engine is running (1 trip detection logic).	Open or short in IGF1 or IGT4 circuit between ignition coil assembly and ECM No. 4 ignition coil assembly ECM	Comes on	DTC stored	SAE Code: P0354 DTC for Mexico Models: Applies

Reference: Inspection using an oscilloscope.

HINT:

The correct waveform is as shown.

With the engine idling, check the waveform between terminals IGT (1 to 4) and E1, and IGF1 and E1 of the ECM connector.

ECM Terminal Name	CH1: Between IGT (1 to 4) and E1 CH2: Between IGF1 and E1
Tester Range	2 V/DIV., 20 ms./DIV.
Condition	Idling with warm engine