66270

1.

Measure primary coil resistance and secondary coil resistance after disconnecting ignition coil connector.

■ Specification :

Primary coil resistance	0.62 ± 10％(20℃)
Secondary coil resistance	7.0 ㏀ ± 15% (20℃)

2.

Is the primary (secondary) resistance of the ignition coil normal?

	▶ Go to "Ignition coil power circuit inspection " procedure as below.
	▶ Substitute with a known-good ignition coil and check for proper operation. If the problem is corrected, Replace the ignition coil.

1.

Measure the voltage between "power" terminal of the ignition coil harness connector and chassis ground with IG key "ON" after disconnecting ignition coil connector.

■ Specification : B+

2.

Is the voltage within the specification?

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

▶ Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage.

▶ Check for open circuit in the power circuit between power terminal of the ignition coil harness connector and power terminal of the ECM harness connector.

▶ Check for short to ground in the power circuit between power terminal of the ignition coil harness connector and power terminal of the ECM harness connector.

3.

Connect the red tongs of the LED circuit tester to battery(+) and probe of LED circuit tester to control terminal of the ignition coil connector after disconnecting ignition coil connector.

4.

Perform actuation test(ignition coil #1~#4) of the Ignition coil.

5.

Is the LED circuit tester lit (When ignition coil is operated by actuation test)?

▶ Go to "Ignition coil waveform inspection" procedure as below.

▶ Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage.

▶ Check for open circuit in the control circuit between control terminal of the ignition coil harness connector and control terminal of the ECM harness connector.

▶ Check for short to ground in the between control terminal of the ignition coil harness connector and control terminal of the ECM harness connector.

▶ Substitute with a known-good ECM and check for proper operation. If the problem is corrected, Replace the ECM.

6.

Select oscilloscope function on the GDS and Connect channel A of the VMI to ignition coil connecter.

7.

Measure the primary ignition coil signal waveform with IG key "START".

■ Specification

8.

Is the primary ignition coil waveform normal?

▶ Go to "Spark plug inspection" procedure.

▶ Go to "Compression pressure inspection" procedure.

▶ Go to "Injector inspection" procedure.

▶ Replace the ignition coil.