TEST 4: Triggering Signal Test

How To Test The Ignition Coils Suzuki: Swift, Vitara - Chevy: Metro, Tracker How To Test The Ignition Coils Suzuki: Swift, Vitara - Chevy: Metro, Tracker

OK, you're here because you have confirmed that the ignition coil is not sparking, has 12 Volts and Ground. The next step is to verify that that Ignition Coil is receiving the Triggering signal from the fuel injection computer.

Testing for the Triggering Signal should be done with the ignition coil connected to its connector. The method I recommend to use is with it connected to its connector and using a wire-piercing probe to test for the signal (to see what this tool looks like, click here: Wire-Piercing Probe.

  1. Put the multimeter in Hertz (Hz) mode.
  2. Probe the circuit labeled with the number 3 (see photo in image viewer) with the black multimeter test lead (using an appropriate tool to pierce the wire).
  3. With the red multimeter test lead probe the BATT (+) Positive terminal.
  4. You should see fluctuating values of 2 to 20+ Hertz as the engine cranks and (possibly starts) on your multimeter.

Let's take a look at what your test result means:

If the multimeter registered a fluctuating 2 to 20+ Hertz (Hz) as the engine cranked and started, then the Triggering Signal is present. This result indicates that the Coil-on-Plug Ignition Coil on your Suzuki is bad and needs to be replaced.

If the multimeter DID NOT register a fluctuating 2 to 20+ Hertz (Hz) as the engine cranked and started, re-check all of your connections and repeat the test again. If still no Hertz readings, then this results eliminates the ignition coil as the source of the NO SPARK condition/Misfire, since without the Triggering Signal the ignition coil will not work.

TEST 5: Testing For Spark At The Ignition Coil

How To Test The Ignition Coils Suzuki: Swift, Vitara - Chevy: Metro, Tracker How To Test The Ignition Coils Suzuki: Swift, Vitara - Chevy: Metro, Tracker

IMPORTANT: proceed with this test if you got a NO spark result from the spark plug wire (High Tension Wire) attached to the Coil-on-Plug (C.O.P.) Ignition Coil in TEST 1.

  1. The Ignition Coil has to be in its place and bolted to the Valve Cover for this test.
  2. Remove the spark plug wire that did not fire off spark.
  3. Place the spark tester directly on the ignition coil in place of the spark plug wire you just removed (see photos in the image viewer).
  4. Ground the spark tester with a battery jump start cable to a good engine ground point or directly on the battery negative terminal.
  5. Have your assistant crank the engine. The engine may start, so be careful.
  6. You're gonna' get one of two results: Spark or No Spark.

Let's take a look at what your test result means:

If you got spark, this result let's you know that the ignition coil is good and that the spark plug wire is bad. Replace both spark plug wires.

If you got NO spark, the ignition coil is bad. Replacing the ignition coil will solve the misfire condition and the misfire code lighting up the check engine light (CEL) on the instrument cluster.

TEST 6: Testing For Spark At The Ignition Coil

How To Test The Ignition Coils Suzuki: Swift, Vitara - Chevy: Metro, Tracker How To Test The Ignition Coils Suzuki: Swift, Vitara - Chevy: Metro, Tracker

IMPORTANT: proceed with this test if you got a NO spark directly from the Coil-on-Plug (C.O.P.) Ignition Coil in TEST 1.

  1. Remove the ignition coil from its place on the Valve Cover.
    1. To perform this test the ignition coil must remain connected to its connector and to the spark plug wire that connects to it.
  2. Place the spark tester directly on the ignition coil's Spark Plug Boot (see the photos in the image viewer).
  3. Ground the spark tester with a battery jump start cable to a good engine ground point or directly on the battery negative terminal.
  4. Have your assistant crank the engine. The engine may start, so be careful.
  5. You're gonna' get one of two results: Spark or No Spark.

Let's take a look at what your test result means:

If you got spark, this result let's you know that the ignition coil is good. If this is the cylinder that is misfiring, go to TEST 7 for other possible causes of this misfire in this cylinder.

If you got NO spark, the ignition coil is bad. Replacing the ignition coil will solve the misfire condition and the misfire code lighting up the check engine light (CEL) on the instrument cluster.

Chevrolet Vehicles:
  • Metro 1.3L
    • 1999, 2000, 2001
  • Tracker 1.6L
    • 1999, 2000, 2001, 2002
Suzuki Vehicles:
  • Swift 1.3L
    • 1999, 2000, 2001
  • Vitara 1.6L
    • 1999, 2000, 2001, 2002