P1380

Diagnostic Chart:

Wiring Diagram:

Circuit Description

This diagnostic will determine if the ABS system is capable of detecting a rough road situation. DTC P1380 is a type D DTC.

Conditions for Setting the DTC

^ Vehicle speed is at least 1 MPH.

^ Engine speed is no more than 5800 RPM.

^ Engine load is no more than 89.9%.

^ DTC P0300 is set and requesting the Malfunction Indicator Lamp (MIL) ON.

^ Rough road indicator not being sent by the EBCM.

Action Taken When the DTC Sets

The MIL will not be illuminated. A history DTC P1380 will be stored.

Conditions for Clearing the MIL/DTC

The VCM turns the MIL off after 3 consecutive driving trips without a fault condition present. A history DTC will clear if no fault conditions have been detected for 40 warm-up cycles (coolant temperature has risen 40°F from the start-up coolant temperature and the engine coolant temperature exceeds 160°F during that same ignition cycle) or the scan tool clearing feature has been used.


Test Description

Number(s) below refer to the step number(s) on the Diagnostic Table.

2. This step isolates an open serial data circuit from the EBCM system.