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Home › Pontiac › 2002 › Aztek FWD › Repair and Diagnosis › Engine Performance › System › Engine Controls Self-Diagnostics › Diagnostic Tests › DTC P0418: Secondary Air Injection Pump Relay Control Circuit › Test Description

Test Description

  1. 2

    Listen for a click when the relay operates. Command both the ON and OFF states. Repeat the commands as necessary.

  2. 3

    This step tests for voltage at the switch 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.
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