LEMON Manuals: Even more car manuals for everyone
Home >> Buick >> 2007 >> Allure CX >> Repair and Diagnosis >> External Pages >> Different car >> Section 71 (Engine Control System & Fuel System - 3.6L - DTC P2105 To DTC P2626) >> DTC P2237 >> Circuit/System Testing

Circuit/System Testing

WARNING: This page is about a different car, the 2008 Buick LaCrosse and 2008 Buick Allure. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition OFF, disconnect the harness connector at the HO2S 1.
  2. Connect a 3A fused jumper wire between the high signal circuit terminal 1 and low signal circuit terminal 5.
  3. Test for greater than 1 volt between the input pump current circuit terminal 6 and ground
    • If less than the specified range, test the input pump current circuit for an open. If the circuit tests normal, replace the ECM.
  4. If all circuits test normal, replace the HO2S 1.
scientia non olet · About LEMON Manuals