IGNITION COIL CIRCUIT
Ignition coil power supply inspection
1.

Measure the voltage between "Power" terminal of "IGNITION COIL" harness connector and chassis ground at IG key "ON" after disconnecting "IGNITION COIL" connector.

■ Specification : B+

2.

Is the measured voltage value normal ?

▶ Go to "Ignition coil control circuit inspection" procedure as below.

▶ Check for open/poor connection/short to ground between "IGN COIL" fuse on "E/R FUSE & RELAY BOX" and "Power" terminal of "IGNITION COIL" harness connector.

Ignition coil control circuit inspection
3.

Connect the red tongs of LED circuit tester to battery (+) and the probe of it to "Control" terminal of "IGNITION COIL" harness connector after disconnecting "IGNITION COIL" connector.

4.

Perform the actuation test of "Ignition coil #1~#6" by using GDS.

5.

Check LED lamp of the circuit tester while performing the actuation test.

■ Specification : The LED lamp blinks during the actuation test.

6.

Does the LED lamp of the circuit tester blink normally ?

▶ Go to "1st ignition signal waveform inspection" procedure as below.

▶ Check for open/poor connection/short to ground between "Ignition Coil Control" terminal of "ECM/PCM" harness connector and "Control" terminal of "IGNITION COIL" harness connector.

1st ignition signal waveform inspection
7.

Select oscilloscope function on the GDS and Connect channel "A" of the VMI to "Control" terminal of "ECM/PCM" harness connector.

8.

Measure the signal waveform of the 1st ignition at IG key "START".

■ Reference signal waveform

9.

Is the measured 1st ignition signal waveform normal ?

▶ Click on "Spark plug" item for more details.

▶ Click on "MAFS" item for more details.

▶ Click on "TPS" item for more details.

▶ Check for open/poor connection/short to ground between "Ignition Coil Control" terminal of "ECM/PCM" harness connector and "Control" terminal of "IGNITION COIL" harness connector.

Яндекс.Метрика