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Home >> GMC >> 2003 >> Safari Van Cargo, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 110 (Engine Controls Self-Diagnostics) >> Diagnostic Tests >> DTC P1381: Misfire Detected - No EBCM/Pcm Serial Data >> 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 number below refers to the step number in the diagnostic procedures.

  1. 2

    This step ensures that the EBCM/EBTCM is capable of transmitting serial data on the class 2 serial data circuit.

  2. 4

    Test the class 2 serial data circuit at the EBCM/EBTCM for correct voltage.
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