Computers/Controls - On-Board Electrical Sys. Diagnosis
Date: December 20, 2011Order No.: T-B-54.10/250
Group: 54
SUBJECT: MY-All, Models 166
On-Board Diagnosis
A new on-board electrical system diagnosis function is available for analyzing on-board electrical system complaints, such as battery discharging.
The stored data records are read out in advance by the diagnostic unit (Xentry Diagnostics) and used for the assessment. See "Note on reading out on-board electrical system data."
In the case of warranty, include the last three standstill and driving cycles as a printout along with the repair documents and file in a tamperproof manner.
Use labor operation number 54 0646 Read out data records of battery sensor and bus keepawake units (after quick test)
The following data are monitored, stored, and displayed in a clearly arranged and itemized manner:
^ Up to 100 driving and standstill cycles
^ Charge balance when driving and at a standstill
^ On-board electrical system stop prohibitions
^ Battery state of charge (standstill cycle)
^ Time specification as to how long the consumers were active
^ Time specification as to how long the on-board electrical system management was active (driving cycle)
^ CAN bus monitoring (bus keepawake unit, wake-up event and bus wake-up event)
Advantages compared with previously known IBS data records:
^ On-board electrical system monitoring is always active because a differentiation is only made between the driving and the standstill cycles
^ Driving profile/vehicle utilization characteristics recognizable
^ Date and time are also stored
^ Duration of quiescent current problem recognizable
^ Circuit status (circuit 15C, circuit 15R and circuit 15) recognizable
^ Bus wake-up event can be recognized as reason without any auxiliary measuring device (control unit responsible cannot be assigned)
The diagnosis above should help in identifying the case.