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Home >> Buick >> 2007 >> Allure CX >> Repair and Diagnosis >> External Pages >> Different car >> Section 52 (Engine Cooling System) >> Diagnostic Information and Procedures >> DTC P0480, P0481, P0691, P0692, P0693, or P0694 (3.6L LY7) >> Diagnostic Fault Information

Diagnostic Fault Information

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.
Circuit Short to Ground Open/High Resistance Short to Voltage Signal Performance
Relay Coil Ignition Circuit P0691, P0693 P0480, P0481 - -
Relay Switch Ignition Circuit 1 1 - -
Fan Relay 1 Control Circuit P0691 P0480 P0692 -
Fan Relay 2 and Fan Relay 3 Control Circuit P0693 P0481 P0694 -
Relay Controlled Output Circuit 1 1 2 -
  1. Fans inoperative without a DTC.
  2. Fans always ON without a DTC.
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