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Home >> Volvo >> 2009 >> V70 >> Repair and Diagnosis >> Brakes >> Mechanical - Hydraulic >> Parking Brake Module (PBM) - Specifications, Electrical/Electronic >> Signal Description, Parking Brake Module (PBM) >> Signal Specification

Signal Specification

General 

All the values given below are between the respective terminal in column 1 and terminal #C1:30 in column 2 (power ground) unless otherwise stated in brackets after the table entry.

NOTE:

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

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 Parking Brake Module (PBM) Connector Terminals
GLL153788Courtesy of VOLVO CARS CORPORATION
SIGNAL TABLE

Breakout box terminal  Control module terminal  Signal type  Ignition off Active/Inactive  Ignition on Active/Inactive  Other 
#1 #C1:1 - - - -
#2 #C1:2 - - - -
#3 #C1:3 - - - -
#4 #C1:4 - - - -
#5 #C1:5 - - - -
#6 #C1:6 - - - -
#7 #C1:7 - - - -
#8 #C1:8 - - - -
#9 #C1:9 Parking brake switch terminal C1:4 U>4.3 V/<0.8 V U>4.3 V/<0.8 V Input
#10 #C1:10 Parking brake switch terminal C1:5 U>4.3 V/<0.8 V U>4.3 V/<0.8 V Input
#11 #C1:11 Parking brake switch terminal C1:8 U>4.3 V/<0.8 V U>4.3 V/<0.8 V Output, f=25 Hz 33 % duty
#12 #C1:12 Right motor terminal C1:1 Ubat -Ulow /Ulow -Ubat Ubat -Ulow /Ulow -Ubat 20 - 35 A upon activation.
#13 #C1:13 30-feed Ubat /Ubat Ubat /Ubat 20 - 35 A upon activation.
#14 #C1:14 Left motor terminal C1:1 Ubat -Ulow /Ulow -Ubat Ubat -Ulow /Ulow -Ubat 20 - 35 A upon activation.
#15 #C1:15 30-feed Ubat /Ubat Ubat /Ubat 20 - 35 A upon activation.
#16 #C1:16 Control modules communication cable (CAN H) U=2.3 - 3.5 V U=2.3 - 3.5 V During communication
#17 #C1:17 Control modules communication cable (CAN L) U=1.5 - 2.5 V U=1.5 - 2.5 V During communication
#18 #C1:18 Parking brake switch terminal C1:7 U>4.3 V/<0.8 V U>4.3 V/<0.8 V Output, f=25 Hz 33 % duty
#19 #C1:19 Parking brake switch terminal C1:6 U>4.3 V/<0.8 V U>4.3 V/<0.8 V Input
#20 #C1:20 Parking brake switch terminal C1:3 U>4.3 V/<0.8 V U>4.3 V/<0.8 V Output, f=25 Hz 33 % duty
#21 #C1:21 - - - -
#22 #C1:22 - - - -
#23 #C1:23 - - - -
#24 #C1:24 - - - -
#25 #C1:25 - - - -
#26 #C1:26 - - - -
#27 #C1:27 Right motor terminal C1:2 Ulow -Ubat /Ignition switch position UII bat -Ulow Ulow -Ubat /Ignition switch position UII bat -Ulow 20 - 35 A upon activation.
#28 #C1:28 Power ground U low /Ulow U low /Ulow 20 - 35 A upon activation.
#29 #C1:29 Left motor terminal C1:2 Ulow -Ubat /Ignition switch position UII bat -Ulow Ulow -Ubat /Ignition switch position UII bat -Ulow 20 - 35 A upon activation.
#30 #C1:30 Power ground U low /Ulow U low /Ulow 20 - 35 A upon activation.