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Rear Electronic Module (REM) Connectors A-E

Fig 1: Identifying Rear Electronic Module (REM) And Connector Terminals
GLL106221Courtesy of VOLVO CARS OF NORTH AMERICA.

Connector A, terminals #A1-#A20

The following values are measured between the relevant terminal and terminal #E1 (power ground) unless otherwise stated.

The values are measured with the control module in "Active mode".

NOTE:

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

U = DC in volts (V).

Ubat = battery voltage in volts (V).

Ulow = Voltage close to 0 V.

NC = Not connected

NC* = grounded via capacitor (C=22nF)

Terminal, breakout box Terminal, control module Signal type Ignition off
Active / not active		 Ignition on
Active / not active		 Other
#A01 #A1 Spare input (30) U Ubat U Ubat At no input
#A02 #A2 Fuel level sensor, left-hand side (+). Switched signal, 5/35 ms. U Ulow U=0.54-3.96 V Full: 0.54 V
Empty: 3.96 V
For Bi-fuel cars this applies to the LPG gas tank The terminal is not used if the tank is PZEVEVAP or EVAP 2.
#A03 #A3 Reserve output (switch to ground) U Ulow U Ulow  
#A04 #A4 Stop lamp, relay driver from the central electronic module (CEM) U Ulow / Ubat U Ulow / Ubat  
#A05 #A5 - - -  
#A06 #A6 Reserve, analog input signal NC* NC*  
#A07 #A7 Signal ground (-) U Ulow U Ulow  
#A08 #A8 Fuel level sensor, right-hand side (+). Switched signal, 5/35 ms. U Ulow U=0.54-3.96 V Full: 0.54 V
Empty: 3.96 V
#A09 #A9 Spare input (30) U Ubat U Ubat At no input
#A10 #A10 Fuel level sensor common ground U Ulow U Ulow  
#A11 #A11 Reserve, analog input signal NC* NC*  
#A12 #A12 Signal ground (-) U Ulow U Ulow  
#A13 #A13 Reserve output (switch to ground) U Ulow U Ulow  
#A14 #A14 CAN H - - During communication U=2.0-3.5 V
#A15 #A15 Volcano Lite CAN H - - During communication U=2.0-3.5 V
#A16 #A16 CAN L - - During communication U=2.0-3.5 V
#A17 #A17 Volcano Lite CAN L - - During communication U=2.0-3.5 V
#A18 #A18 Reserve U Ulow U Ulow NC
#A19 #A19 Reserve output (switch to ground) U Ulow U Ulow  
#A20 #A20 - - -  
#A21 #B1 Spare input (GND) U Ulow U Ulow At no input
#A22 #B2 Spare input (GND) U Ulow U Ulow At no input
#A23 #B3 Reserve output (switch to ground) U Ulow U Ulow  
#A24 #B4 Reserve U Ulow U Ulow NC
#A25 #B5 Power supply, fuel level sensor, CNG U Ulow U 5V Bi-fuel
#A26 #B6 Signal ground, position sensor for headlamp beam height control U Ulow U Ulow  
#A27 #B7 Reserve output (switch to ground) U Ulow U Ulow  
#A28 #B8 Analog input signal from the position sensor for headlamp beam height control. U Ulow U=1.7-3.2V NC
#A29 #B9 Reserve U Ulow U Ulow NC
#A30 #B10 Power supply, position sensor for headlamp beam height control U Ulow U=5 V  
#A31 #B11 Reserve U Ulow U Ulow NC
#A32 #B12 Reserve U Ulow U Ulow NC
#A33 #B13 Reserve U Ulow U Ulow NC
#A34 #B14 Reserve U Ulow U Ulow NC
#A35 #B15 Reserve U Ulow U Ulow NC
#A36 #B16 Input signal fuel level sensor (pressure), CNG U Ulow U=0.5V-4.5V Full (200bar): 4.5V Empty (0 bar): 0.5V
#A37 #B17 Reserve U Ulow U Ulow NC
#A38 #B18 Reserve U Ulow U Ulow NC
#A39 #B19 Reserve U Ulow U Ulow NC
#A40 #B20 Reserve U Ulow U Ulow NC
#A41 #C1 Input signal, fuel level sensor (temperature), CNG U~Ulow U=0V-5V 0◦ C~4 V
25◦ C~2.5 V
#A42 #C2 Signal ground fuel level sensor, CNG U Ulow U Ulow Bi-fuel
#A43 #C3 Reserve U Ulow U Ulow NC
#A44 #C4 - - -  
#A45 #C5 - - -  
#A46 #C6 Reserve output (switch to ground) U Ulow U Ulow  
#A47 #C7 Reserve U Ulow U Ulow NC
#A48 #C8 Reserve output (switch to ground) U Ulow U Ulow  
#A49 #C9 Reserve U Ulow U Ulow NC
#A50 #C10 Reserve U Ulow U Ulow NC
#A51 #C11 Reserve output (switch to ground) U Ulow U Ulow  
#A52 #C12 Reserve output (switch to ground) U Ulow U Ulow  
#A53 #C13 Reserve U Ulow U Ulow NC
#A54 #C14 Reserve U Ulow U Ulow NC
#A55 #C15 Reserve U Ulow U Ulow NC
#A56 #C16 Reserve U Ulow U Ulow NC
#A57 #C17 Spare input (30) U Ubat U Ubat At no input
#A58 #C18 Spare input (30) U Ubat U Ubat At no input
#A59 #C19 Reserve U Ulow U Ulow NC
#A60 #C20 Reserve output (switch to ground) U Ulow U Ulow  
#B01 #D1 Relay driver, rear windshield heating U Ubat U Ulow / Ubat Grounded when the relay is activated
#B02 #D2 Relay driver, rear 15l-supply - -  
#B03 #D3 Reserve U Ulow U Ulow NC
#B04 #D4 Signal voltage, high mounted stop lamp U Ubat / Ulow U Ubat / Ulow 5 door
#B05 #D5 Reserve 5V / Ulow 5V / Ulow NC
#B06 #D6 Serial communication, input signal from the level sensor control module During communication U=8-11 V During communication U=8-11 V Communicates when the car is alarmed. Conditional on the car being equipped with an inclination sensor module (ISM).
#B07 #D7 Input signal from the tailgate handle U Ulow / Ubat U Ulow / Ubat Applies to 4-door models.
Grounded when the tailgate handle is pressed in.
#B08 #D8 Spare input (30) Ubat Ubat At no input
#B09 #D9 Spare input (30) Ubat Ubat At no input
#B10 #D10 Spare input (30) Ubat Ubat At no input
#B11 #D11 - U Ulow U Ulow NC
#B12 #D12 Reserve, relay RMA 04 U Ulow U Ulow  
#B13 #D13 Reserve, relay RMI 09 U Ulow U Ulow  
#B14 #D14 Reserve, relay RMI 10 U Ulow U Ulow  
#B15 #D15 Reserve, relay RMI 25 U Ulow U Ulow  
#B16 #D16 Relay driver, warm-up cycle diesel filter U Ulow U Ulow / Ubat  
#B17 #D17 Reserve, relay RST 01 U Ulow U Ulow  
#B18 #D18 Relay driver, rear X-supply - -  
#B19 #D19 Reserve output (switch to ground) U Ulow U Ulow  
#B20 #D20 Power supply to the tilt sensor. Output signal. U Ulow / Ubat U Ulow Supplied with voltage when the car is alarmed. Conditional on the car being equipped with an inclination sensor module (ISM).

The power signals below are measured between the relevant terminal and terminal #E1 (power ground)

Terminal, breakout box Terminal, control module Signal type Ignition off
Active / not active		 Ignition on
Active / not active		 Other
#B21 #E1 Power ground U Ulow U Ulow  
#B22 #E2 Power supply to the cargo compartment lighting. Output signal. U Ulow / Ubat U Ulow / Ubat Applies to 4-door models.
Activated when the trunk lid is open.
Goes out after 30 minutes
Goes out when driving forward with the trunk lid open. The ignition must be switched off before it lights again.
Can be switched off via the upper electronic module (UEM).
#B23 #E3 Reserve U Ulow U Ulow NC
#B24 #E4 Power supply to the rear fog lamp. Input signal. U Ubat U Ubat  
#B25 #E5 Reserve U Ulow U Ulow NC
#B26 #E6 Power supply to the rear electronic module (REM) U Ubat U Ubat  
#B27 #E7 Reserve U Ulow U Ulow NC
#B28 #E8 Reserve U Ulow U Ulow NC
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