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Home >> Volvo >> 2008 >> XC70 >> Repair and Diagnosis (Single Page) >> Electrical >> Body Electrical >> Accessory USB Unit (AUU) And Central Electronic Module (CEM) Diagnostic Trouble Codes >> CEM-B102652: Steering Column Lock. System Programming Failures. Not Activated (2008) >> Signal Specification
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Signal Specification

General 

All the values indicated below are only described values, as the power supply is not permitted when the breakout box is connected.

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 as a %    
Fig 1: Identifying Connector Pin Terminal
GLL172907Courtesy of VOLVO CARS CORPORATION
CONNECTOR C1

Breakout box terminal  Control module terminal  Signal type  Ignition on (ignition position II or III) 
#B1 #C1:1 Belt tensioner, rear left (+) Monitoring signal during normal mode.
Ignition pulse upon activation.
#B2 #C1:2 Belt tensioner, rear left (-) Monitoring signal during normal mode.
Ignition pulse upon activation.
#B3 #C1:3 Center rear belt tensioner (-) Monitoring signal during normal mode.
Ignition pulse upon activation.
#B4 #C1:4 Center rear belt tensioner (+) Monitoring signal during normal mode.
Ignition pulse upon activation.
#B5 #C1:5 Rear right seat belt tensioner (+) Monitoring signal during normal mode.
Ignition pulse upon activation.
#B6 #C1:6 Rear right seat belt tensioner (-) Monitoring signal during normal mode.
Ignition pulse upon activation.
#B7 #C1:7 Left inflatable curtain (-) Monitoring signal during normal mode.
Ignition pulse upon activation.
#B8 #C1:8 Left inflatable curtain (+) Monitoring signal during normal mode.
Ignition pulse upon activation.
#B9 #C1:9 Right inflatable curtain (+) Monitoring signal during normal mode.
Ignition pulse upon activation.
#B10 #C1:10 Right inflatable curtain (-) Monitoring signal during normal mode.
Ignition pulse upon activation.
#B11 #C1:11 Front passenger belt tensioner (-) Monitoring signal during normal mode.
Ignition pulse upon activation.
#B12 #C1:12 Front passenger belt tensioner (+) Monitoring signal during normal mode.
Ignition pulse upon activation.
#B13 #C1:13 Driver's seat belt tensioner (+) Monitoring signal during normal mode.
Ignition pulse upon activation.
#B14 #C1:14 Driver's seat belt tensioner (-) Monitoring signal during normal mode.
Ignition pulse upon activation.
#B15 #C1:15 Passenger's lap seat belt tensioner (-) (Only certain markets) Monitoring signal at normal position, Ignition pulse on activation.
#B16 #C1:16 Passenger's lap seat belt tensioner (+) (Only certain markets) Monitoring signal at normal position, Ignition pulse on activation.
#B17 #C1:17 Driver's lap seat belt tensioner (+) Monitoring signal during normal mode.
Ignition pulse upon activation.
#B18 #C1:18 Driver's lap seat belt tensioner (-) Monitoring signal during normal mode.
Ignition pulse upon activation.
#B19 #C1:19 Front passenger's adaptive seat belt force limiter (-) Monitoring signal during normal mode.
Ignition pulse upon activation.
#B20 #C1:20 Front passenger's adaptive seat belt force limiter (+) Monitoring signal during normal mode.
Ignition pulse upon activation.
#B21 #C1:21 Adaptive seat belt force limiter driver (+) Monitoring signal during normal mode.
Ignition pulse upon activation.
#B22 #C1:22 Adaptive seat belt force limiter driver (-) Monitoring signal during normal mode.
Ignition pulse upon activation.
#B23 #C1:23 Front left side impact protection (SIPS) bag (-) Monitoring signal during normal mode.
Ignition pulse upon activation.
#B24 #C1:24 Front left side impact protection (SIPS) bag (+) Monitoring signal during normal mode.
Ignition pulse upon activation.
#B25 #C1:25 Reserve -
#B26 #C1:26 Reserve -
#B27 #C1:27 CAN H During communication U = 2.5 - 4.0 V.
#B28 #C1:28 CAN L During communication U = 1.0 - 2.5 V.
#B29 #C1:29 Driver's seat position sensor, signal ground (USA/CAN only) Ulow
#B30 #C1:30 Driver's seat position sensor (+) (USA/CAN only) -
#B31 #C1:31 Front passenger seat position sensor (+) (USA/CAN only) -
#B32 #C1:32 Front passenger seat position sensor, signal ground (USA/CAN only) Ulow
#B33 #C1:33 Passenger seat belt buckle, signal ground Ulow
#B34 #C1:34 Passenger seat belt buckle (+) -
#B35 #C1:35 Driver's seat belt buckle (+) -
#B36 #C1:36 Driver's seat belt buckle, signal ground Ulow
#B37 #C1:37 Rear left belt buckle, signal ground (certain markets only) Ulow
#B38 #C1:38 Rear left belt buckle (+) (certain markets only) -
#B39 #C1:39 Center rear belt buckle (+) (certain markets only) -
#B40 #C1:40 Center rear belt buckle, signal ground (certain markets only) Ulow
#B41 #C1:41 Rear right belt buckle, signal ground (certain markets only) Ulow
#B42 #C1:42 Rear right belt buckle (+) (certain markets only) -
#B43 #C1:43 Reserve -
#B44 #C1:44 Reserve -
#B45 #C1:45 Reserve -
#B46 #C1:46 Reserve -
#B47 #C1:47 Side impact sensor, right front (+) -
#B48 #C1:48 Side impact sensor right front, signal ground Ulow
#B49 #C1:49 Side impact sensor front left, signal ground Ulow
#B50 #C1:50 Side impact sensor, left front (+) -
#B51 #C1:51 Side impact sensor, right rear (+) -
#B52 #C1:52 Side impact sensor rear right, signal ground Ulow
#B53 #C1:53 Side impact sensor rear left, signal ground Ulow
#B54 #C1:54 Side impact sensor, left rear (+) -
#B55 #C1:55 Pressure sensor right (+) -
#B56 #C1:56 Pressure sensor right, signal ground Ulow
#B57 #C1:57 Pressure sensor left, signal ground Ulow
#B58 #C1:58 Pressure sensor left (+) -
#B59 #C1:59 Reserve -
#B60 #C1:60 Reserve -
#C1 #C1:61 Reserve -
#C2 #C1:62 Reserve -
#C3 #C1:63 Reserve -
#C4 #C1:64 Reserve -
#C5 #C1:65 Reserve -
#C6 #C1:66 Reserve -
#C7 #C1:67 Reserve -
#C8 #C1:68 Reserve -
- #C1:69 Reserve -
#C10 #C1:70 Reserve -
#C11 #C1:71 Reserve -
#C12 #C1:72 Sensor-CAN_L During communication U = 1.0 - 2.5 V.
#C13 #C1:73 Sensor-CAN_H During communication U = 2.5 - 4.0 V.
#C14 #C1:74 Front right side impact protection (SIPS) bag (+) Monitoring signal during normal mode.
Ignition pulse upon activation.
#C15 #C1:75 Side airbag, front right (-) Monitoring signal during normal mode.
Ignition pulse upon activation.
Fig 2: Identifying Pin Terminal
GLL172908Courtesy of VOLVO CARS CORPORATION
CONNECTOR C2

Breakout box terminal  Control module terminal  Signal type  Ignition on (ignition position II or III) 
#A1 #C2:1 Collision Normal, f = 10 Hz, PWM = 50 %.
Impact registered, f = 250 Hz, PWM = 50 %, for up to 1 - 5 seconds.
#A2 #C2:2 Passenger airbag, stage 1 (-) Monitoring signal during normal mode.
Ignition pulse upon activation.
#A3 #C2:3 Passenger airbag, stage 1 (+) Monitoring signal during normal mode.
Ignition pulse upon activation.
#A4 #C2:4 Passenger airbag, stage 2 (+) Monitoring signal during normal mode.
Ignition pulse upon activation.
#A5 #C2:5 Passenger airbag, stage 2 (-) Monitoring signal during normal mode.
Ignition pulse upon activation.
#A6 #C2:6 Passenger airbag stage 3 (-) (USA/CAN only) Monitoring signal during normal mode.
Ignition pulse upon activation.
#A7 #C2:7 Passenger airbag stage 3 (+) (USA/CAN only) Monitoring signal during normal mode.
Ignition pulse upon activation.
#A8 #C2:8 Driver airbag, stage 1 (+) Monitoring signal during normal mode.
Ignition pulse upon activation.
#A9 #C2:9 Driver airbag, stage 1 (-) Monitoring signal during normal mode.
Ignition pulse upon activation.
#A10 #C2:10 Driver airbag, stage 2 (-) Monitoring signal during normal mode.
Ignition pulse upon activation.
#A11 #C2:11 Driver airbag, stage 2 (+) Monitoring signal during normal mode.
Ignition pulse upon activation.
#A12 #C2:12 Reserve -
#A13 #C2:13 Reserve -
#A14 #C2:14 Adaptive steering column (-) (USA/CAN only) Monitoring signal during normal mode.
Ignition pulse upon activation.
#A15 #C2:15 Adaptive steering column (+) (USA/CAN only) Monitoring signal during normal mode.
Ignition pulse upon activation.
#A16 #C2:16 Reserve -
#A17 #C2:17 Reserve -
#A18 #C2:18 Reserve -
#A19 #C2:19 Reserve -
- #C2:20 Reserve -
- #C2:21 Reserve -
#A22 #C2:22 Warning light activated passenger airbag (PAE) (+) Activated light:
Pulse-width modulated signal, 0 - 12 V.
Day mode: 12 V.
Night mode: 3-4 V.
- #C2:23 Reserve -
#A24 #C2:24 Reserve -
#A25 #C2:25 Reserve -
- #C2:26 Reserve -
- #C2:27 Reserve -
- #C2:28 Reserve -
- #C2:29 Reserve -
- #C2:30 Reserve -
#A31 #C2:31 Reserve -
- #C2:32 Reserve  
- #C2:33 Reserve -
#A34 #C2:34 Front passenger airbag switch, sensor A (+) (not USA/CAN) -
#A35 #C2:35 Front passenger airbag switch, sensor B (+) (not USA/CAN) -
#A36 #C2:36 Front passenger airbag switch, signal ground (not USA/CAN) -
- #C2:37 Reserve -
- #C2:38 Reserve -
- #C2:39 Reserve -
- #C2:40 Reserve -
- #C2:41 Reserve -
#A42 #C2:42 Power supply, supplemental restraint system module (SRS), 15-feed U = Ubat
#A43 #C2:43 Power supply, supplemental restraint system module (SRS), 15-feed U = Ubat
- #C2:44 Reserve -
#A45 #C2:45 PAD lamp (+) Activated light:
Pulse-width modulated signal, 0 - 12 V.
Day mode 12 V.
Night mode 3 - 4 V.
- #C2:46 Reserve -
- #C2:47 Reserve  
- #C2:48 Reserve -
#A49 #C2:49 Reserve -
#A50 #C2:50 Reserve -
- #C2:51 Reserve -
- #C2:52 Reserve -