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Ignition Coil Power Circuit (Sonata 2.4L)

  1. Turn ignition off. Disconnect suspect coil 3-pin harness connector. Turn ignition on. Measure voltage between ground and coil 3-pin connector terminal No. 1 (Tan/Black wire). See Figure. If battery voltage does not exist, turn ignition off and go to next step.
  2. Disconnect ignition failure sensor 4-pin connector. Turn ignition on. Measure voltage between ground and sensor harness connector terminal No. 4 (Pink/Black wire). If battery voltage exists, go to next step. If battery voltage does not exist, repair circuit between ignition failure sensor and ignition switch.
  3. Check for continuity between ignition failure sensor terminals No. 1 and 2. If continuity exists, repair circuit between ignition failure sensor and suspect coil. If continuity does not exist, replace ignition failure sensor.
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