P1381

CIRCUIT DESCRIPTION
This diagnostic detects a serial data malfunction which could inhibit the transfer of the ABS rough road data to the VCM. This DTC is a type D DTC.

CONDITIONS FOR SETTING THE DTC Test Conditions
1. The DTC P0300 is set, and the DTC P0300 is requesting the Malfunction Indicator Lamp (MIL) on.
2. No rough road data is available from the EBCM.

ACTION TAKEN WHEN THE DTC SETS
The Malfunction Indicator Lamp (MIL) will not illuminate. The VCM stores a history DTC.

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
The number below refer to the step number on the diagnostic table.

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