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Home >> Pontiac >> 2002 >> Aztek AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 98 (Engine Control System Self-Diagnostics - 3.8L) >> Diagnostic Tests >> DTC P1381: Misfire Detected - No Communication With Brake Control Module >> Test Description
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Test Description

WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 2002 Pontiac Grand Prix, 2002 Pontiac Bonneville, 2002 Chevrolet Monte Carlo, 2002 Chevrolet Impala, and 2002 Buick Regal. 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

    This step ensures that the EBCM is capable of transmitting serial data on the serial data circuit.

  2. 4

    Test the serial data circuit at the EBCM for correct voltage.
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