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Home >> GMC >> 2003 >> Safari Van Cargo, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 787 (Antilock Brake System With TCVS & VSES) >> Diagnostic Information and Procedures >> DTC C0290 or C0292 (W/O JL4): Lost Communications With PCM >> Circuit Description

Circuit Description

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The powertrain control module (PCM) sends a state of health message to the EBCM within 5.5 seconds after the modules are powered up. This message is sent via serial data communications.

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