Test Description

The number(s) below refer to step(s) on diagnostic table.

1. 1. The On-Board Diagnostic (OBD II) System Check prompts technician to complete some basic checks and store freeze frame and failure records data on scan tool if applicable. This creates an electronic copy of data taken when malfunction occurred. The information is then stored on scan tool for later reference.
2. 2. Be careful to clear only DTCs and not captured information stored on scan tool. The scan tool will issue a warning if this is about to happen.
3. 4. A DTC P1381 being reset indicates that PCM/ECM is not receiving correct information from EBCM due to an ABS DTC.
4. 5. When DTC P1381 is set, an ABS DTC should also be set.
5. 6. Repair any condition that remains and is causing a misfire by following table for any DTC that has set.
6. 7. The replacement PCM/ECM must be reprogrammed.

Fig 1: DTC P1381: ABS Rough Road Serial Data Fault

Courtesy of DAEWOO