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Power Circuit Test (XG350)

  1. Turn ignition off. Disconnect all three ignition coils 3-pin harness connectors, see Figure. Turn ignition on, and measure voltage between ground and ignition coils connector terminal No. 1 (Pink/Black wire). Voltage should be battery voltage. If voltage is not as specified, go to next step. For circuits identification, see WIRING DIAGRAMS article.
  2. Turn ignition off. Disconnect ignition failure sensor 4-pin harness connector, see Figure. Turn ignition on, and measure voltage between ground and sensor harness connector terminal No. 4 (Pink/Black wire). Voltage should be battery voltage. If voltage is as specified, go to next step. If voltage is not as specified, repair open circuit (in Pink/Black wire) between ignition failure sensor and engine compartment Fuse/Relay box.
  3. Turn ignition off. With ignition failure sensor harness connector disconnected, check for continuity between sensor connector terminals No. 1 and 2 (component side). If continuity is present, repair open circuit (in Pink/Black wire) between ignition failure sensor and ignition coils. If continuity is not present, replace ignition failure sensor.
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