Power Supply, Parking Assistance Module (PAM)

Parking Assistance Module (PAM) is supplied with voltage via a voltage input.

With ignition on the voltage input is supplied with voltage and the Parking Assistance Module (PAM) is in active mode.

• Power input terminal #C1:1(#A1) is powered via a fuse from the rear relay 15 supply. The Parking Assistance Module (PAM) will not be activated if there is an open-circuit.

Checking the power supply 

Check the power supply from the battery to the Parking Assistance Module (PAM) terminal #C1:1(#1). Check for an open-circuit. Check for loose connections, contact resistance and oxidation. Also check the relay and the fuses. The voltage must be approximately battery voltage when the ignition is on.

Ground terminal, Parking Assistance Module (PAM) 

Parking Assistance Module (PAM) has a ground input. The ground input from the control module is power ground and is connected to the ground terminal in the car body. See the relevant wiring diagram for further information about the ground terminal.

1. Ground input #C1:8(#8) is a power ground and is connected to the ground terminal in the body.

Checking the ground terminal 

Check the ground cable between Parking Assistance Module (PAM) terminal #C1:8(#8)and the ground terminal. Check for an open-circuit, loose connections, contact resistance and oxidation. With the ignition on, the drop in voltage between the ground connection for the control module and the ground terminal must not be greater than 0.5 V.

Remedy as necessary.

Other information 

• see CONNECTING THE BREAKOUT BOX 
• see SIGNAL SPECIFICATION
• See the relevant wiring diagram for information about circuits and ground terminals in the bodywork.
• see CHECKING WIRING AND TERMINALS