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Home >> Chevrolet >> 2001 >> Camaro Base, 2D Convertible, Automatic >> Repair and Diagnosis >> External Pages >> Different car >> Section 40 (Engine Control System Self-Diagnostics - 5.7L) >> Diagnostic Tests >> DTC P0418: Air Pump Relay Control Circuit >> Test Description

Test Description

WARNING: This page is about a different car, the 2002 Pontiac Firebird and 2002 Chevrolet Camaro. 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. 4

    Listen for a click when the relay operates. Ensure that both the ON and the OFF states are commanded. Repeat the commands as necessary.

  2. 6

    This step tests for voltage at the coil side of the AIR pump relay.

  3. 7

    This step verifies that the PCM is providing ground to the AIR pump relay.

  4. 8

    This step tests if a ground is constantly being applied to the AIR pump relay.
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