Downloading Software and Replacing the Control Module
Downloading software and replacing the control moduleNew software can be downloaded into the transmission control module (TCM). When ordering software, the hardware and the software in the car is compared to the information in the Volvo central database. If the comparison is OK the software is downloaded to the control module. If the comparison between the car and Volvo central database is not OK, the database is updated with the car configuration. When this is complete the software is downloaded. For further information regarding downloading, see Design and Function, Downloading Software.
Signal specification
All values listed below are between the terminal in column 1 and terminal #A9 (#39 on the breakout box), unless otherwise indicated in brackets.
Note: Connect the breakout box and check the ground terminals before taking readings.
U= DC voltage in volts (V)
Ubat = battery voltage
Ulow = voltage approximately 0 V t = time in milliseconds (ms)
UAC AC voltage in volts (V)
F = frequency in Hertz (Hz)
% duty = duty cycle (pulse ratio) as a percentage
M
- Connector A (16-pin) corresponds to terminals #31
- #46 on the breakout box
- Connector B (4-pin) corresponds to terminals #51
- #54 on the breakout box
- Connector C (22-pin on transmission side) corresponds to terminals #1
- #22 on the breakout box.
Connector A, terminals #A1 -#A1 6. The following values are measured between the relevant terminal in column 1 and #A9 (#39 on the breakout box) unless otherwise stated.
Note: Check the ground terminals before starting to take readings with the breakout box. U = DC in volts (V) Ubat = battery voltage in volts (V) Plow = Voltage close to 0 V