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 > Vehicle Stability Control System: Steering Angle Sensor Initialization Incomplete (C1439,C1445)
DESCRIPTION
The skid control ECU (brake actuator assembly) acquires the steering angle sensor
zero point every time the ignition switch is turned to ON and the vehicle is driven
at 50 km/h (31 mph) or more for approximately 30 seconds. The ECU also stores previous
zero points.
DTC ...
Toyota CH-R Service Manual > Vacuum Pump: Inspection
INSPECTION
PROCEDURE
1. INSPECT VACUUM PUMP VANE
(a) Check that the vacuum pump vane or vacuum pump vane caps are not
damaged or excessively worn out.
HINT:
If the vacuum pump vane or vacuum pump vane caps are damaged or excessively
worn out, replace the damaged parts wit ...