1 Check whether the power cord of the three-cylinder ignition coil assembly is in good condition. Open the multimeter with a multimeter, and select 20v as the measuring range. Connect the red port of the multimeter to the 1 line of the ignition coil, and the black port to the 3 line of the ignition coil.

If it is normal: check the power cord and grounding cord.

If it is abnormal: check the confirmation signal line and timing signal line.

2. Measure the power supply circuit of the three-cylinder ignition coil, choose a multimeter with a resistance range of 200 ohms, measure the ignition switch with a multimeter, measure the circuit with black port 1, and measure the resistance. Less than 1 ohm is normal.

3 Measure the grounding wire of the three-cylinder ignition coil, select the resistance range of the multimeter as 200 ohms, and measure the iron wire of the tower (Line 4) and the grounding position of the black port of the multimeter with the multimeter. Less than 1 ohm is normal.

4 Measure the resistance of the timing signal line of the ignition coil of the third cylinder. Select the resistance range of the multimeter as 200 ohms, turn on the multimeter, measure the timing signal line (the timing signal line of Line 3) with the red port of the multimeter, and measure the grounding position with the black port. Measure the timing signal line of the ignition coil of the third cylinder, select the resistance range of the multimeter to be 200Ω, turn on the multimeter, measure the timing signal line (timing signal line of Line 3) with the red port of the multimeter, and measure the port 85 of ECM85 with the black port.

5. Measure the confirmation signal line of the ignition coil of the third cylinder, select the resistance range of the multimeter to be 200 ohms, and use the multimeter to measure the confirmation signal line (the confirmation signal line of Line 2 is the ignition confirmation line (igf)) and the black-mouth measuring ground line.

Measure the timing signal wire of the ignition coil of the third cylinder, select the resistance range of the multimeter to be 200 ohms, and use the multimeter to measure the timing signal wire (the timing signal wire (igt) of Line 3) and the black port to measure the port of ECM8 1.

6 Check whether the spark plug has carbon deposit, oil stain and burning, and whether the gap is between 0.9-1.0mm. Replace the side beyond or below the gap.

Results Check the above six conditions, not to mention abnormal lateral displacement. Please adopt it. Thank you!