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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1962 (Hybrid Cooling System - 2.4L (Hp7)) >> Diagnostic Information and Procedures >> DTC P0A84 or P0A85 >> Circuit/System Testing

Circuit/System Testing

WARNING: This page is about a different car, the 2009 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: In order to avoid damaging BECM X1 and X2 connector terminals, the proper test probes should be used. The proper test probes are as follows:
  1. Ignition OFF, disconnect generator battery vent fan harness connector. Refer to Hybrid Battery Service Disconnect/Connect .
  2. Disconnect BECM harness connector X2.
  3. Test the fan tach feedback circuit X2 connector terminal 11 to cooling fan harness connector terminal 4 for a short to voltage or a short to ground.
  4. If the circuit test normal replace the BECM.
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