TERMINALS OF ECU
CHECK POWER STEERING ECU ASSEMBLY
*a |
Component without harness connected (Power Steering ECU Assembly) |
- |
- |
(a) Measure the voltage and resistance according to the value(s) in the table below.
NOTICE:
When the EPS warning light is illuminated due to a malfunction, the fail-safe function may cause the voltage of the power steering ECU assembly terminals to become 0 V.
Terminal No. (Symbol) |
Wiring Color |
Terminal Description |
Condition |
Specified Condition |
---|---|---|---|---|
F23-1 (IG) - Body ground |
LG - Body ground |
IG power source |
Ignition switch ON |
8 to 16 V |
F23-7 (CANH) - F23-8 (CANL) |
P - W |
CAN communication line |
Ignition switch off |
54 to 69 Ω |
z3-1 (TRQ2) - z3-2 (TRQG2) |
Y - G |
Torque sensor 2 signal |
Engine running and steering wheel not being turned (without load) |
2.3 to 2.7 V |
Engine running and steering wheel being turned to the right with vehicle stopped |
1.2 to 2.5 V |
|||
Engine running and steering wheel being turned to the left with vehicle stopped |
2.5 to 3.8 V |
|||
z3-2 (TRQG2) - Body ground |
G - Body ground |
Torque sensor 2 ground |
Always |
Below 1 Ω |
z3-3 (TRQV2) - z3-2 (TRQG2) |
L - G |
Torque sensor 2 voltage source |
Ignition switch ON |
4.5 to 5.5 V |
z3-7 (TRQV1) - z3-8 (TRQG1) |
R - B |
Torque sensor 1 voltage source |
Ignition switch ON |
4.5 to 5.5 V |
z3-8 (TRQG1) - Body ground |
B - Body ground |
Torque sensor 1 ground |
Always |
Below 1 Ω |
z3-9 (TRQ1) - z3-8 (TRQG1) |
W - B |
Torque sensor signal |
Engine running and steering wheel not being turned (without load) |
2.3 to 2.7 V |
Engine running and steering wheel being turned to the right with vehicle stopped |
2.5 to 3.8 V |
|||
Engine running and steering wheel being turned to the left with vehicle stopped |
1.2 to 2.5 V |
|||
F68-1 (PIG) - Body ground |
B-W - Body ground |
Power source |
Ignition switch ON |
9 to 16 V |
F68-2 (PGND) - Body ground |
W-B - Body ground |
Power ground |
Always |
Below 1 Ω |
If the result is not as specified, the ECU may be malfunctioning.
Toyota CH-R Service Manual > Front Stabilizer Bar: Components
COMPONENTS
ILLUSTRATION
*1
FRONT NO. 1 STABILIZER BRACKET LH
*2
FRONT NO. 1 STABILIZER BRACKET RH
*3
FRONT STABILIZER BAR
*4
FRONT STABILIZER BAR BUSHING LH
*5
FRONT STABILIZ ...
Toyota CH-R Service Manual > Power Steering System: Assist Map Number Un-Writing (C1581)
DESCRIPTION
This DTC will be stored if the power steering ECU assembly determines that the
assist map is not written in the ECU.
DTC No.
Detection Item
DTC Detection Condition
Trouble Area
Warning Indicate
Return-to-normal Conditi ...