Field Remedy: 2063
| Subject: |
Diesel EMS system - Wrong fuel consumption
indication shown in board computer |
| Models: |
Engines: |
Option: |
| Vectra-C 2004...,Signum 2004...,Astra-H
2004...,Zafira-B 2005...,Antara 2007...,Corsa-D 2007...,Meriva-B
2010... |
Z19DT| Z19DTH| Z19DTJ| Z19DTL| Z30DT,Z19DT|
Z19DTH| Z19DTJ| Z19DTL| Z30DT,Z13DTH| Z17DTH| Z19DT| Z19DTH|
Z19DTJ| Z19DTL| Z17DTL,Z19DT| Z19DTH| Z19DTL,Z20DMH,Z13DT| Z13DTH|
Z13DTJ| Z17DTR,A17DT| A17DTC| A17DTS |
|
| Complaint: |
Customer complaint about deviation of fuel
consumption calculated through on board computer compared to real
fuel consumption figure. |
| Cause: |
Problem was identified as an inaccurate fuel
consumption signal from Engine ECU to CAN-Bus line. Mentioned
possible deviation might be more than 10% for diesel engines. |
| Production: |
N/A, field fix only. |
Remedy:
In case of customer complaint please perform TECH 2-"Fuel Consumption
Correction" (correction from +12,7% to -12,8%) via TECH 2. This needs
to be done in Engine ECU. It's not possible to enter the correction
factor directly. To get the correction factor you have to execute
the following steps:
Refuel vehicle till maximum and reset "Board-Computer Absolute
Consumption". The customer should drive as accustomed.
(Attention: another driving style could influence the final
result)
At the next refueling the customer has to refuel the vehicle till
maximum and has to make a note of the "Board-Computer Absolute
Consumption" and the refueling amount of fuel.
(Attention: The longer the driven distance, the more precise is
the final result)
These two values have to be used in the TECH 2-"Fuel Consumption
Correction". Modified TECH 2 software will available as of
TIS 2000-DVD, version 72 (June 2006, TECH 2 version 15.105).
| FunctionalGroup: |
N - Electrical Equipment |
| Complaint Group: |
23 - Wrong Indication |
| Trouble Code: |
None |
|
