Checking the ignition coil

Connect an ohmmeter between the ignition coil terminals 1 and 2 (ignition coil side).

Fig 1: Identifying Terminals 1 And 2

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Fig 2: Identifying Ohmmeter

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The ohmmeter should read approximately 0.5 Ω. 

• OK 

  Refer to Checking the ignition coil 

• NOT OK 

  Refer to Checking the ignition coil 

Try a new ignition coil according to Ignition coil(s), replacement .

• Continue 

  Refer to Verification 

Fig 1: Identifying Ignition OFF

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• Ignition off.

  Check the cable between ignition coil connector terminal 1 and engine control module (ECM) terminal #32 (ECM-38) or terminal #1 (ECM-3A). Check for an open-circuit according to Open-circuit, permanent faults . Check for a short-circuit to ground according to Short-circuit to ground, permanent faults .

  Fig 2: Identifying Outside Temperature Sensor Connector Terminal 2

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  Fig 3: Identifying Ohmmeter

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  Fig 4: Identifying EMS2000

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• Continue 

  Refer to Verification 

Fig 1: Identifying Ignition ON

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• Ignition on.

  Check the cable between ignition coil connector terminal 2 and system relay 2/14 base terminal 3. Check for an open-circuit according to Open-circuit, permanent faults .

  Remedy as necessary.

  Fig 2: Identifying Outside Temperature Sensor Connector Terminal 2

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  Fig 3: Identifying Ohmmeter

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• Continue 

  Refer to Verification