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Home >> Saturn >> 2006 >> Ion Red Line >> Repair and Diagnosis >> External Pages >> Different car >> Section 256 (Engine Controls - 2.2L - DTC P1134 To DTC P2444) >> DTC P2440 >> Circuit/System Testing

Circuit/System Testing

WARNING: This page is about a different car, the 2006 Saturn Ion 3 and 2006 Saturn Ion 2. However, it is still accessible from the selected car via links, so may be relevant.
  1. With the ignition ON, the engine OFF, and the solenoid valve substituted with a test lamp, observe that the test lamp is not illuminated.
    • If the test lamp is illuminated then test for a short to voltage on the solenoid voltage supply circuit or a faulty relay.
  2. Inspect the AIR pump inlet and outlet hoses/pipes for restrictions.
  3. Inspect the solenoid valve for leaks.
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