Spark Test

WARNING:

High voltage in the ignition system can cause strong electrical shock which can result in serious injury. Avoid direct contact to the vehicle body during the following spark test.

SPARK TEST DESCRIPTION

STEP	INSPECTION	RESULTS	ACTION
1	Disconnect the ignition coil from the spark plugs. Remove the spark plugs. Reconnect the spark plugs to the ignition coil. Ground the spark plugs to engine. Is strong blue spark visible at each cylinder while cranking?	Yes	Ignition system is normal.
1		No	Some cylinders do not spark: Go to the next step. All cylinders do not spark: Go to Step 4.
2	Inspect the spark plugs for damage, wear, carbon deposits and proper plug gap. Are the spark plugs normal?	Yes	Go to the next step.
2		No	Replace spark plugs, then go to Step.1.
3	Inspect the following wiring harnesses for open or short: Ignition coil No.1 terminal B-PCM terminal 2BE Ignition coil No.2 terminal B-PCM terminal 2BF Ignition coil No.3 terminal B-PCM terminal 2BG Ignition coil No.4 terminal B-PCM terminal 2BH Are the wiring harnesses normal?	Yes	Inspect and replace the ignition coil. (See IGNITION COIL INSPECTION .)
3		No	Repair or replace the malfunctioning part, then go to Step.1.
4	Measure the voltage at terminal A in each ignition coils. Is the voltage B+ ?	Yes	Go to the next step.
4		No	Inspect power supply circuit of ignition coils.
5	Does the PCM connector or ignition coil connectors have poor connection?	Yes	Repair or replace the connector, then go to Step.1.
5		No	Go to the next step.
6	Are the following parts normal? CKP sensor and crankshaft pulley	Yes	Inspect for open or short circuit in wiring harness and connector of CKP sensor.
6		No	Repair or replace the malfunctioning part, then go to Step.1.