ELECTRONIC POWER STEERING SYSTEM > TERMINALS OF ECU

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TERMINALS OF ECU

C110598E05


HINT:
The power steering ECU assembly uses waterproof connectors. Therefore, voltage or waveforms cannot be checked with the connectors connected to the vehicle.

Terminal No. (Symbols)
Wiring Color
Terminal Description
A24-1 (CAN+) (*1)
B
Local CAN communication
A24-2 (CANH)
B
High-level CAN bus line
A24-3 (CANL)
W
Low-level CAN bus line
A24-4 (PIG)
W
Power source
A24-5 (PGND)
B
Power ground
A24-8 (CAN-)
W
Local CAN communication
A24-9 (IG)
B-Y
IG power source
A24-10 (SIL)
R
Diagnosis communication signal
A24-11 (RLY)
LG-B
EPS relay drive signal
C4-1 (TRQV)
W
Torque sensor power source
C4-2 (RZV)
B
Rotation angle sensor power source
C4-3 (RZCS)
R
COS phase input signal (Rotation angle sensor)
C4-4 (RZSN)
W
SIN phase input signal (Rotation angle sensor)
C4-5 (U)
B
U phase motor output
C4-6 (W)
R
W phase motor output
C4-7 (INSN)
G-W
SIN phase input signal (torque sensor input shaft side)
C4-8 (INCS)
R-L
COS phase input signal (torque sensor input shaft side)
C4-9 (OUSN)
G-B
SIN phase input signal (torque sensor output shaft side)
C4-10 (OUCS)
Y-B
COS phase input signal (torque sensor output shaft side)
C4-11 (V)
W
V phase motor output
C4-12 (TQG1)
L-W
Torque sensor power source circuit ground
C4-13 (RZG)
G
Rotation angle sensor power source circuit ground
C4-14 (TQG2)
R-B
Torque sensor detection circuit ground
C4-15 (SRZG)
BR
Rotation angle sensor shield ground
*1: 3UZ-FE


INSPECT WIRE HARNESS SIDE CONNECTOR

C110599E05


Terminal No. (Symbols)
Wiring Color
Terminal Description
Condition
Specified Condition
A24-4 (PIG) - A24-5 (PGND)
W-B
Power source
Always
Below 1 V
A24-5 (PGND) - Body ground
B - Body ground
Power ground
Always
Below 1 Ω
A24-9 (IG) - A24-5 (PGND)
B-Y - B
IG power source
Engine switch on (IG)
10 to 14 V
A24-11 (RLY) - A24-5 (PGND)
LG-B - B
EPS relay drive signal
Always
10 to 14 V
C4-5 (U) - C4-6 (W)/C4-11 (V)
B - R/W
U phase motor output
Always
Below 1 Ω
C4-6 (W) - C4-5 (U)/C4-11 (V)
R - B/W
W phase motor output
Always
Below 1 Ω
C4-11 (V) - C4-5 (U)/ C4-6 (W)
W - B/R
V phase motor output
Always
Below 1 Ω