Pinout Values and Diagnostic Parameters

Signal Specification

General
All the values given below are between the terminals stated in column 1 and terminal #A16 in column 2 (signal ground). This applies unless otherwise indicated in brackets.

NOTE: It is important to connect the breakout box and check the ground terminals before taking readings.

For further information about:

- connection of breakout box, see " Connecting breakout box, Climate Control Module (CCM)"
- checking the ground point, "Checking the voltage/ground connection, climate control module (CCM)".

There may be several connections and connectors between the control module and components. See the relevant section in the wiring diagram for further information about these.

U = DC voltage in volts (V)
U(bat) = Battery voltage (V)
U(low) = Voltage approximately 0 V
PWM = Pulse width modulated signal in %
U(AC) = AC voltage in volts (V)
f = Frequency in Hertz (Hz)
t = Time in seconds