LEMON Manuals: Even more car manuals for everyone
Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 105 (Engine Controls Self-Diagnostics) >> Diagnostic Tests >> DTC P0412: Secondary Air Injection Relay Control Circuit >> Test Description

Test Description

WARNING: This page is about a different car, the 2002 Pontiac Aztek and 2002 Buick Rendezvous. However, it is still accessible from the selected car via links, so may be relevant.

The numbers below refer to the step numbers in the diagnostic procedures.

  1. 2

    Listen for an audible click when the solenoid operates. Command both the ON and OFF states. Repeat the commands as necessary.

  2. 3

    This step tests for voltage at the feed.

  3. 4

    This step verifies that the control module is providing a ground.

  4. 5

    This step tests if ground is constantly being applied.
scientia non olet · About LEMON Manuals