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Home >> Chevrolet >> 2006 >> Cobalt LTZ >> Repair and Diagnosis >> External Pages >> Different car >> Section 705 (Engine Controls And Fuel - 2.2L (L61) - Diagnosis & Troubleshooting) >> Fuel Pump Electrical Circuit Diagnosis >> Component Testing

Component Testing

WARNING: This page is about a different car, the 2007 Pontiac G5 Pursuit, 2007 Pontiac G5, and 2007 Chevrolet Cobalt. However, it is still accessible from the selected car via links, so may be relevant.
  1. Measure for 70-110 ohms of resistance between terminals 85 and 86 of the fuel pump relay.
    • If the resistance is not within the specified range, replace the fuel pump relay.
  2. Measure for infinite resistance between the following terminals of the fuel pump relay:
    • Terminal 30 and 86
    • Terminal 30 and 87
    • Terminal 30 and 85
    • Terminal 85 and 87
    • If continuity is detected, replace the fuel pump relay.
  3. Connect a 15A fused jumper wire from the positive terminal of the battery to relay terminal 85. Connect a jumper wire from the negative terminal of the battery to relay terminal 86. Measure for less than 2 ohms between terminals 30 and 87 of the relay.
    • If the resistance measures more than 2 ohms, replace the fuel pump relay.
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