Circuit Description
This diagnostic will detect a serial data malfunction which could inhibit the transfer of ABS rough road data to the VCM. DTC P1381 is a type D DTC.
Conditions for Setting the DTC
| • | DTC P0300 is set and requesting the 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 OFF the MIL 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 (the coolant temperature has risen 22°C (40°F) from the start-up coolant temperature and the engine coolant temperature exceeds 71°C (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.
Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
1 |
Important: Before clearing DTC(s) use the scan tool to record Freeze Frame and Failure Records for reference, as data will be lost when the Clear Info function is used. Was the the Powertrain On-Board Diagnostic (OBD) System Check performed? | -- | ||
Was a problem found? | -- | Go to Antilock Brake System (ABS) | ||
3 | Repair as necessary. Is the action complete? | -- | -- | |
4 |
Does the scan tool indicate that this diagnostic Ran and Passed? | -- | -- | |
5 | Using the scan tool, select Capture Info, Review Info. Are any additional DTCs displayed that have not been diagnosed? | -- | Go to the Applicable DTC Table | System OK |
