Lexus NX: Terminals Of Ecu

TERMINALS OF ECU

*a

Component with harness connected

(Power Steering ECU Assembly)

-

-

CHECK POWER STEERING ECU ASSEMBLY

(a) Measure the voltage and resistance according to the value(s) in the table below.

NOTICE:

When the power steering warning light (red) 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

n3-1 (IG) - n1-2 (PGND)

R - B

IG power source

Power switch on (IG)

8 to 16 V

n3-4 (CANH) - n3-8 (CANL)

W - B

CAN communication line

Power switch off

54 to 69 Ω

n3-5 (TS) - n1-2 (PGND)

O - B

Terminal TS of DLC3

Always

9 to 16 V

a-1 (TRQG) - Body ground

- (Not available) - Body ground

Torque sensor ground

Always

Below 1 Ω

a-2 (TRQ2) - a-1 (TRQG)

- (Not available)

Torque sensor signal

Power switch on (READY)

Steering wheel not being turned (without load)

2.3 to 2.7 V

Power switch on (READY)

Steering wheel being turned to right with vehicle stopped

0.3 to 2.5 V

Power switch on (READY)

Steering wheel being turned to left with vehicle stopped

2.5 to 4.7 V

a-3 (TRQV) - a-1 (TRQG)

- (Not available)

Torque sensor voltage source

Power switch on (READY)

8.5 to 10.5 V

a-5 (TRQF) - a-1 (TRQG)

- (Not available)

Torque sensor reference voltage

Power switch on (READY)

3.35 to 3.37 V

a-7 (TRQ1) - a-1 (TRQG)

- (Not available)

Torque sensor signal

Power switch on (READY)

Steering wheel not being turned (without load)

2.3 to 2.7 V

Power switch on (READY)

Steering wheel being turned to right with vehicle stopped

2.5 to 4.7 V

Power switch on (READY)

Steering wheel being turned to left with vehicle stopped

0.3 to 2.5 V

b-1 (RZCS2) - n1-2 (PGND)

B - B

Rotation angle sensor COS aspect output signal

Power switch on (READY)

Steering wheel turned

0.68 to 4.42 V

b-2 (RZV2) - n1-2 (PGND)

G - B

Rotation angle sensor excitation output signal

Power switch on (READY)

Steering wheel turned

0.68 to 4.42 V

b-3 (RZSN2) - n1-2 (PGND)

L - B

Rotation angle sensor SIN aspect output signal

Power switch on (READY)

Steering wheel turned

0.68 to 4.42 V

b-5 (RZCS1) - n1-2 (PGND)

R - B

Rotation angle sensor COS aspect output signal

Power switch on (READY)

Steering wheel turned

0.68 to 4.42 V

b-6 (RZV1) - n1-2 (PGND)

W - B

Rotation angle sensor excitation output signal

Power switch on (READY)

Steering wheel turned

0.68 to 4.42 V

b-7 (RZSN1) - n1-2 (PGND)

Y - B

Rotation angle sensor SIN aspect output signal

Power switch on (READY)

Steering wheel turned

0.68 to 4.42 V

n1-1 (PIG) - n1-2 (PGND)

R - B

Power source

Always

9 to 16 V

n1-2 (PGND) - Body ground

B - Body ground

Power ground

Always

Below 1 Ω

c-1 (PHA) - n1-2 (PGND)

# - B

A phase motor output

Power switch on (READY)

Steering wheel turned

Value changes within 4 to 35 V range

c-2 (PHB) - n1-2 (PGND)

# - B

B phase motor output

Power switch on (READY)

Steering wheel turned

Value changes within 4 to 35 V range

c-3 (PHC) - n1-2 (PGND)

# - B

C phase motor output

Power switch on (READY)

Steering wheel turned

Value changes within 4 to 35 V range

HINT:

# means that the motor terminal is tightened directly to the ECU with bolts.

READ NEXT:

 Diagnosis System

DIAGNOSIS SYSTEM CHECK DLC3 (a) Check the DLC3. Click here CHECK WARNING LIGHT (a) When a problem occurs in the power steering system, the power steering warning light (red or yellow) on the combina

 Dtc Check / Clear

DTC CHECK / CLEAR CHECK DTC (USING THE Techstream) (a) Turn the power switch off. (b) Connect the Techstream to the DLC3. (c) Turn the power switch on (IG). (d) Turn the Techstream on. (e) Enter the f

 Freeze Frame Data

FREEZE FRAME DATA FREEZE FRAME DATA NOTICE: It is difficult to show the specified values (judgment values) clearly because freeze frame data values change significantly due to differences in measur

SEE MORE:

 Engine Coolant Temperature / Intake Air Temperature Correlation (P011B)

DESCRIPTION The engine has two temperature sensors, an engine coolant temperature sensor and an intake air temperature sensor, to detect temperature while the engine is operating. A thermistor, whose resistance value varies according to the temperature, is built into each sensor. When the temperatur

 System Diagram

SYSTEM DIAGRAM Sender Receiver Signal Line *: w/ Blind Spot Monitor System Parking Assist ECU Multi-display Assembly Display GVIF cable Radio Receiver Assembly Multi-display Assembly Display GVIF cable Steering Sensor Parking Assist ECU Data continuity

© 2016-2024 Copyright www.lexunx.com