P1381

DTC P1181 Misfire Detected No EBCM/VCM Serial Data:

EBCM:

CIRCUIT DESCRIPTION
This diagnostic will detect a serial data malfunction which could inhibit the transfer of ABS rough road data to the Vehicle Control Module (VCM). DTC P1381 is a type D DTC.

CONDITIONS FOR SETTING THE DTC

^ DTC P0300 is set and requesting the Malfunction Indicator Lamp (MIL) on.
^ No rough road data is available from the EBCM.

ACTION TAKEN WHEN THE DTC SETS
The Malfunction Indicator Lamp (MIL) will not be illuminated. A history DTC P1381 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.