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Home >> Chevrolet >> 2020 >> Malibu LS >> Repair and Diagnosis >> External Pages >> Different car >> Section 83 (Data Communication System - Diagnostic Information And Procedures (2 Of 2)) >> Diagnostic Information and Procedures >> DTC U18DC (with HP4) >> Diagnostic Fault Information

Diagnostic Fault Information

WARNING: This page is about a different car, the 2019 Chevrolet Malibu. However, it is still accessible from the selected car via links, so may be relevant.
Circuit Short to Ground Open/High Resistance Short to Voltage Signal Performance
B+ U18DC U18DC - -
Ignition U18DC U18DC - -
Accessory Wakeup Serial Data 2 P24EF, P24F0, P24F1, U18DC U18DC - -
High Speed GMLAN Serial Data (+) U0073* U18DC U0073* -
High Speed GMLAN Serial Data (-) U0073* U18DC U0073* -
Ground - U18DC - -
* Other DTCs may set with this fault.
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