Spark Test

Disconnect the fuel pump relay.
Verify that each ignition coil and connector is connected properly.

Inspect the ignition system in the following procedure.

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.

ITEM INSPECTION CHART

STEP	INSPECTION		ACTION
1	Disconnect the ignition coil from the spark plugs. Remove the spark plugs. (See SPARK PLUG REMOVAL/INSTALLATION .) Verify that the spark plugs do not have carbon deposits. Is there any malfunction?	Yes	Perform no-load racing at 4,000 rpm for 2 min, 2 times to burn off the carbon deposits. Repeat this step.
1		No	Go to the next step.
2	Inspect the spark plugs for damage, wear, and proper plug gap. (See SPARK PLUG INSPECTION .) Is there any malfunction?	Yes	Replace the spark plugs, then go to the next step. (See SPARK PLUG REMOVAL/INSTALLATION .)
2		No	Go to the next step.
3	Reconnect the spark plugs to the ignition coil. Ground the spark plugs to the engine. Is a strong blue spark visible at each cylinder while cranking the engine?	Yes	Ignition system is normal.
3		No	Some cylinders do not spark: Go to the next step. All cylinders do not spark: Go to Step 5.
4	Inspect the following wiring harnesses for an open or short circuit: Ignition coil No. 1 terminal C-PCM terminal 2BA Ignition coil No. 2 terminal C-PCM terminal 2AW Ignition coil No. 3 terminal C-PCM terminal 2AX Ignition coil No. 4 terminal C-PCM terminal 2AT Is there any malfunction?	Yes	Repair or replace the suspected wiring harness, then go to Step 1.
4		No	Inspect the ignition coil. (See IGNITION COIL INSPECTION .) Replace the ignition coil if necessary. (See IGNITION COIL REMOVAL/INSTALLATION .)
5	Measure the voltage at the terminal A in each ignition coils. Is the voltage B+ ?	Yes	Go to the next step.
5		No	Inspect the power supply circuit of ignition coils. Repair or replace the suspected wiring harness.
6	Does the PCM connector or ignition coil connectors have poor connection?	Yes	Repair or replace the malfunctioning part according to the inspection results, then go to Step 1.
6		No	Go to the next step.
7	Inspect the CKP sensor and crankshaft pulley. (See CRANKSHAFT POSITION (CKP) SENSOR INSPECTION .) Is there any malfunction?	Yes	Repair or replace the malfunctioning part according to the inspection results.
7		No	Inspect for an open or short circuit in the wiring harness and connector of the CKP sensor. Repair or replace the malfunctioning part according to the inspection results.