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 > Steering Column Assembly: Components
COMPONENTS
ILLUSTRATION
*1
STEERING WHEEL ASSEMBLY
-
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Tightening torque for "Major areas involving basic vehicle performance
such as moving/turning/stopping" : N*m (kgf*cm, ft.*lbf)
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...
Toyota CH-R Service Manual > Lin Communication System: Diagnosis System
DIAGNOSIS SYSTEM
DESCRIPTION
The main body ECU (multiplex network body ECU) and certification ECU (smart key
ECU assembly) control the LIN communication system. LIN communication system data
and Diagnostic Trouble Codes (DTCs) can be read through the Data Link Connector
3 (DLC3).
When the s ...