S60 AWD L5-2.5L Turbo VIN 59 B5254T2 (2005)
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signal 1 = gradual increase in pollutant level
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signal 2 = medium increase in pollutant level
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signal 3 = rapid increase in pollutant level.
The climate control module (CCM) uses the signal to control the recirculation damper motor.
There are diagnostics for the air quality sensor (AQS).
Seat heaters
The system for the seat heaters consists of three different parts:
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a seat heating module (SHM) which controls the function for communicating with the climate control module (CCM)
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two heater pads
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a temperature sensor.
The seat heating module (SHM) is under the left and right-hand front seat. The heater pads are in the seat and backrest. The temperature sensor is in the
seat.
The seat heating module (SHM) is directly connected to the heater pad and temperature sensor. The seat heating module (SHM) communicates with the
climate control module (CCM) via a LIN bus.
There are diagnostics for the seat heating module (SHM).
Switches, dashboard environment panel, (lower section)
Across the lower section of the dashboard environment panel there is a 12V socket and space for a maximum of seven switches.
Each switch has its own identity. This is unique for the relevant function. The switches can therefore be positioned in any location on the dashboard
environment panel, as long as they are installed in the off position. They do not have to be in any particular order. However, the identity of the installed
switches must correspond with the car configuration file so that they can be activated.
There are diagnostics for the switches.
Rear A/C (only XC90 with three rows of seats)
