DESCRIPTION
The power steering ECU supplies current to the power steering motor through the motor circuit.
DTC No. |
DTC Detection Condition |
Trouble Area |
---|---|---|
C1522 |
Motor current sensor malfunction |
|
C1523 |
Excessively large current deviation |
|
C1524 |
Short (or open) in motor circuit or abnormal voltage or current in motor circuit |
|
C1555 |
Motor relay failure |
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
If the power steering ECU and steering column assembly have been replaced, perform
the rotation angle sensor initialization and torque sensor zero point calibration
(See page ).
PROCEDURE
1. |
READ VALUE USING TECHSTREAM (MOTOR VOLTAGE) |
(a) Turn the ignition switch off.
(b) Connect the Techstream to the DLC3.
(c) Turn the ignition switch to ON.
(d) Turn the Techstream on.
(e) Enter the following menus: Chassis / EMPS / Data List.
(f) Select the items "Motor Terminal Volt(U)", "Motor Terminal Volt(V)" and "Motor Terminal Volt(W)" in the Data List and read the value displayed on the Techstream.
EMPS
Tester Display |
Measurement Item/Range |
Normal Condition |
Diagnostic Note |
---|---|---|---|
Motor Terminal Volt(U) |
Motor terminal voltage (U phase)/ Min.: 0 V Max.: 46.667 V |
During steering operation, value changes within 4 to 46 V range |
The engine is running and steering wheel is being turned. |
Motor Terminal Volt(V) |
Motor terminal voltage (V phase)/ Min.: 0 V Max.: 46.667 V |
During steering operation, value changes within 4 to 46 V range |
The engine is running and steering wheel is being turned. |
Motor Terminal Volt(W) |
Motor terminal voltage (W phase)/ Min.: 0 V Max.: 46.667 V |
During steering operation, value changes within 4 to 46 V range |
The engine is running and steering wheel is being turned. |
Result |
Proceed to |
---|---|
During steering operation, value changes within 4 to 46 V range |
A |
During steering operation, voltage is not generated |
B |
A | ![]() |
REPLACE POWER STEERING ECU |
B | ![]() |
REPLACE STEERING COLUMN ASSEMBLY |
Removal
REMOVAL
CAUTION / NOTICE / HINT
HINT:
Use the same procedure for the RH side and LH side.
The procedure listed below is for the LH side.
PROCEDURE
1. PRECAUTION
HINT:
See page
2. DRAIN AUTOMATIC TRANSAXLE FLUID
HINT:
for U ...
Back Door Closer Operation Malfunction (B2250)
DESCRIPTION
The power back door ECU (power back door motor unit)*1 or back door closer ECU
(multiplex network door ECU)*2 receives signals from the latch switch, sector switch
and back door courtesy switch, which are built into the back door lock. Based o ...
Security Horn Circuit
DESCRIPTION
When the theft deterrent system is switched from the armed state to the alarm
sounding state, the main body ECU (driver side junction block assembly) controls
the security horn.
WIRING DIAGRAM
PROCEDURE
1.
PERFORM A ...