LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Volvo >> 2008 >> XC70 >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Anti-Theft Systems >> Driver's Door Module/Passenger Door Module (DDM/PDM) And Power-Operated Tailgate Module (Pot) - Specifications, Electrical/Electronic >> Power-Operated Tailgate Module (Pot) >> Signal Description >> General
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Signal Description: General

All the values given below are between the respective terminal in column 1 and terminal #C1-2 in column 2 (power ground) unless otherwise stated in parenthesis after the table entry.

NOTE:

It is important to connect the breakout box and check the ground connections before starting to measure.

U= DC voltage in volts (V) UAC = AC voltage in volts (V)
Ubat = Battery voltage (V) f = Frequency in Hertz (Hz)
Ulow = Voltage approximately 0 V t = Time in seconds
PWM = Pulse width modulated signal in % % duty = Duty cycle (pulse ratio) in percent (%)
Fig 1: Identifying Connector C1 (Green)
GLL178066Courtesy of VOLVO CARS CORPORATION
CONNECTOR C1 (GREEN)

Breakout box terminal  Control module terminal  Signal  Signal type  Activated  Not activated 
21 #C1-1 Ground for power supply to control module Ground U = 0 V U = 0 V
22 #C1-2 Reserve - - -
23 #C1-3 Reserve - - -
24 #C1-4 Switch handle Digital in U = 0 V U = Ubat
25 #C1-5 Communication CAN_H, Average speed network CAN During communication the voltage is 2.0 - 3.5 V During communication the voltage is 2.0 - 3.5 V
26 #C1-6 Reserve - - -
27 #C1-7 Reserve - - -
28 #C1-8 Control module power supply Power supply U = Ubat U = Ubat
29 #C1-9 Reserve - - -
30 #C1-10 Reserve - - -
31 #C1-11 Reserve - - -
32 #C1-12 Communication CAN_L middle speed network CAN During communication the voltage is 1.5 - 2.5 V During communication the voltage is 1.5 - 2.5 V
33 #C1-13 Reserve - - -
34 #C1-14 Reserve - - -
Fig 2: Identifying Connector C2
GLL162360Courtesy of VOLVO CARS CORPORATION
CONNECTOR C2 (GREY)

Breakout box terminal  Control module terminal  Signal  Signal type  Activated  Not activated 
1 #C2-1 Motor tailgate opening, open Pulsed power supply At opening: U = 0 V
At closing U = Ubat
-
2 #C2-2 Power supply, hall sensors Power supply U = Ubat U = Ubat
3 #C2-3 Hall sensor 2, signal Digital in U = 0 - 12 V Not defined
4 #C2-4 Switch closing tailgate Digital in U = 0 V U = Ubat
5 #C2-5 Sensor 1 (inner lock position) Digital in Tailgate locked: U = 0 V Tailgate not locked: U = Ubat
6 #C2-6 Reserve - - -
7 #C2-7 Motor closing, tailgate, reversing Power supply Closing: U = 0 V
Reversing: U = Ubat
-
8 #C2-8 Motor tailgate opening, close Pulsed power supply Opening: U = Ubat
Closing: U = 0 V
-
9 #C2-9 Ground, power supply hall sensors Ground U = 0 V U = 0 V
10 #C2-10 Hall sensor 1, signal Digital in U = 0 - 12 V Not defined
11 #C2-11 Sensor 2 (outer lock position) Digital in Tailgate in outer or inner lock position: U = 0 V Tailgate open: U = Ubat
12 #C2-12 Feedback from motor closing, tailgate Digital in Motor on: U = 0 - 12 V
Motor off: U = 0 V
-
13 #C2-13 Lighting, luggage compartment Digital in Tailgate locked: U = Ubat Tailgate not locked: U = 0 V
14 #C2-14 Motor closing tailgate, close Power supply Closing: U = Ubat
Reversing: U = 0 V
-