Siemens VDO DTCO 1381 - 10.4 Checking the buffer battery

Service only
First calibration 10.4 Checking the buffer battery
Edition 07/2007 Technical Description DTCO 1381 10 - 11
TD00.1381.00 132 102
10.4 Checking the buffer battery
The buffer battery must be replaced in the following cases to ensure
reliable function of the DTCO 1381:
• During installation, activation or initial calibration if the pro-
duction date of the DTCO 1381 is more than 12 months ago.
• During every regularly inspection.
Production date DTCO 1381 The production date of the DTCO 1381 is shown on the packaging
and the model plate, coded as "MYY:
1. Check the production date of the DTCO 1381.
2. If the production date of the DTCO 1381 is more than 12
months ago, replace the buffer battery of the DTCO 1381, see
chapter 12.2 "Buffer battery", page 12-4.
M = Month of production
A January G July
B February H August
C March J September
D April K October
E May L November
F June M December
YY= Year of production
04 2004 07 2007
05 2005 08 2008
06 2006
… …