Lexus ES manuals

Lexus ES: Terminals Of Ecu

Lexus ES (XZ10) Service Manual / Steering / Power Assist Systems / Power Steering System(for Gasoline Model) / Terminals Of Ecu

TERMINALS OF ECU

TERMINALS OF ECU

*a

Component without harness connected

(Rack and Pinion Power Steering Gear Assembly)

-

-

HINT:

  • The rack and pinion power steering gear assembly uses waterproof connectors. Therefore, voltage or waveforms cannot be checked with the connectors connected to the vehicle.
  • Use the Data List and Active Test on the Techstream to check the operation of the rack and pinion power steering gear assembly and check that communication is established.

    Click here

Terminal No. (Symbol)

Terminal Description

C37-4 (IG)

IG power source

C37-7 (PGND)

Power ground

C37-8 (PIG)

Power source

C37-10 (CANH)

CAN communication line

C37-11 (CANL)

CAN communication line

CHECK WIRE HARNESS SIDE CONNECTOR

*a

Front view of wire harness connector

(to Rack and Pinion Power Steering Gear Assembly)

-

-

(a) Disconnect the C37 rack and pinion power steering gear assembly.

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

Terminal No. (Symbol)

Wiring Color

Terminal Description

Condition

Specified Condition

C37-4 (IG) - Body ground

W - Body ground

IG power source

Engine switch on (IG)

8 to 16 V

C37-7 (PGND) - Body ground

B - Body ground

Power ground

Always

Below 1 Ω

C37-8 (PIG) - Body ground

W - Body ground

Power source

Always

9 to 16 V

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