Reading off input and output signals

This function can be used to continuously read off the values and status of the rear electronic module (REM) input and output signals.

The following parameters can be read off:

• status of the locking relay and unlocking relay for the left rear door
• status of the locking relay and unlocking relay for the right rear door
• status of the relay for the rear folding head restraint
• the status of the trunk lid pop-up relay (4 doors)
• status of the locking relay and unlocking relay for the fuel tank filler cover
• status of the rear fog lamp relay
• status of the rear fog lamp relay, German version and trailer
• status of the back-up lamp relay
• status of the rear windshield heating relay
• power supply from the rear electronic module (REM)
• fuel level, left and right tank halves
• lamp fault. Indicates whether any bulb has blown. Parking lamp groups 1 and 2, cover the left and right rear parking lamps.
  NOTE:

  On early S80 models parking lamp groups 1 and 2 correspond to the inner and outer lamps.

• the power supply to the inclination sensor module (ISM) (low, high). High when the car is alarmed, otherwise low
• Inclination sensor module (ISM), alarm status. Indicates whether the inclination sensor module (ISM) has deployed the alarm
• Inclination sensor module (ISM), x/y status. Indicates whether the inclination sensor module (ISM) has deployed first in the X or Y axis
• the status of the trunk lid handle, (pop up, no action) (4 doors)
• current, lamp fault rear fog lamp. The rear electronic module (REM) detects lamp faults when the current is below 1.5A
• Central electronic module (CEM) driver brake (off, on). Checks the input signal from the stop lamp driver from the central electronic module (CEM) to the rear electronic module (REM)
• stop lamp check (lamp on, lamp off). Checks whether the rear electronic module (REM) transmits a signal to activate the stop lamp relay
• current, lamp fault, stop lamp. The rear electronic module (REM) detects lamp faults when the current is below 3.0 A
• status of back-up gear (idle, engaged)
• status relay 15I in the power supply
• cargo compartment lighting output signal (0W - 10W)
• position sensor input signal for the headlamp beam height control (1.7V -3.2V)
• calibration status of the position sensor for headlamp beam height control
• status seat belt reminder passenger (off/on)
• input signal anode/cathode for seat belt reminder.