VARIABLE GEAR RATIO STEERING SYSTEM > TERMINALS OF ECU

for Preparation Click here


HINT:
Inspect the connectors from the back side while they are connected.


C107444E02


Symbols (Terminal No.)
Wiring Color
Terminal Description
Condition
Specified Condition
AFS+ (A42-2) -
PGND (A42-7)
L - W-B
CAN communication line (to AFS system)
Engine switch on (IG)
Pulse generation
IG (A42-3) -
PGND (A42-7)
B-Y - W-B
Power supply (ECU-IG fuse)
Engine switch on (IG)
10 to 14 V
CAN+ (A42-4) -
CAN- (A42-9)
B - W
Local CAN communication
Engine switch on (IG)
Pulse generation
AFS- (A42-5) -
PGND (A42-7)
Y - W-B
CAN communication line (to AFS system)
Engine switch on (IG)
Pulse generation
PGND (A42-7) -
Body ground
W-B - Body ground
Ground
Always
Below 1 Ω
PIG (A42-8) -
PGND (A42-7)
R - W-B
Power supply (VGRS fuse)
Engine switch on (IG)
10 to 14 V
+BI (A42-10) -
PGND (A42-7)
GR - W-B
Power supply (ECU-B fuse)
Always
10 to 14 V
BMV (L69-1) -
PGND (A42-7)
W - W-B
Steering actuator motor signal (V phase)
Engine start
Sine wave
BMU (L69-2) -
PGND (A42-7)
B - W-B
Steering actuator motor signal (U phase)
Engine start
Sine wave
BMW (L69-3) -
PGND (A42-7)
R - W-B
Steering actuator motor signal (W phase)
Engine start
Sine wave
SG (L69-6) -
PND2 (L69-8)
BR - W-B
Steering actuator motor signal shield ground
Always
Below 1 Ω
PND2 (L69-8) -
Body ground
W-B - Body ground
Steering control ECU ground
Always
Below 1 Ω
+BO (L70-1) -
PGND (A42-7)
LG - W-B
Steering sensor power supply line
Always
10 to 14 V
LV (L70-3) -
PGND (A42-7)
Y - W-B
Power source for steering actuator lock
Engine switch on (IG)
10 to 14 V
S1 (L70-41) -
PGND (A42-7)
W - W-B
Steering actuator motor rotation angle sensor signal
Engine switch on (IG)
Sine wave
RV (L70-6) -
PGND (A42-7)
B - W-B
Steering actuator resolver excitation output voltage
Engine switch on (IG)
Sine wave
SIL (L70-7) -
PGND (A42-7)
R - W-B (LHD)
SB - W-B (RHD)
Diagnostic communication signal
Engine switch on (IG)
Pulse generation
CANH (L70-9) -
CANL (L70-20)
R - W
Global CAN communication
Engine switch on (IG)
Pulse generation
SS1- (L70-10) -
PGND (A42-7)
L - W-B
Steering angle sensor signal
Engine switch on (IG), turn the steering wheel
Pulse generation
LG (L70-12) -
PGND (A42-7)
L - W-B
Steering actuator lock ground
Engine start
Pulse generation
S2 (L70-14) -
PGND (A42-7)
R - W-B
Steering actuator motor rotation angle sensor signal
Engine switch on (IG)
Sine wave
RG (L70-15) -
PGND (A42-7)
G - W-B
Steering actuator resolver common ground
Always
Below 1 Ω
SS2+ (L70-16) -
PGND (A42-7)
Shielded - W-B
Ground for steering actuator motor rotation angle sensor signal wire and control signal wire shield wire
Engine switch on (IG)
Pulse generation
SS1+ (L70-19) -
PGND (A42-7)
LG - W-B
Steering angle sensor signal
Engine switch on (IG), turn the steering wheel
3 to 4 V