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Home >> Saturn >> 2007 >> Ion Red Line >> Repair and Diagnosis >> External Pages >> Different car >> Section 170 (Engine Controls And Fuel - 2.2L - DTC P0420 To DTC P2544) >> DTC P2440 >> Component Testing

Component Testing

WARNING: This page is about a different car, the 2007 Saturn Ion 3 and 2007 Saturn Ion 2. However, it is still accessible from the selected car via links, so may be relevant.

Relay Test

  1. Test between the normally-closed switch terminals, if any, for 0 ohms.
  2. Test between the normally-open switch terminals for infinite ohms.
  3. Test between each switch terminal and either coil terminal for infinite ohms.
  4. Connect the relay coil terminals to ground and fused power to energize the relay.
  5. Test between each switch terminal and each coil terminal for 0 volts.
  6. Test between the normally-closed switch terminals, if any, for infinite ohms.
  7. Test between the normally-open switch terminals for 0 ohms.
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