Lexus ES manuals

Lexus ES: Terminals Of Ecu

Lexus ES (XZ10) Service Manual / Engine & Hybrid System / Cruise Control / Road Sign Assist System (for Hv Model) / Terminals Of Ecu

TERMINALS OF ECU

NOTICE:

  • DTCs may be output when connectors are disconnected during inspection. Therefore, be sure to clear the DTCs using the Techstream once the inspection has been completed.
  • Do not apply excessive force to the forward recognition camera connector.

CHECK FORWARD RECOGNITION CAMERA

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

Terminal No. (Symbol)

Wiring Color

Terminal Description

Condition

Specified Condition

P5-7 (IGB) - P5-10 (GND)

LA-P - LA

Power source

Power switch on (IG)

11 to 14 V

Power switch off

Below 1 V

P5-10 (GND) - Body ground

LA - Body ground

Ground

Always

Below 1 Ω

(b) Check for pulses according to the value(s) in the table below.

HINT:

If the waveform is not similar to that shown in the illustration, a malfunction of a CAN bus line, terminating resistor, or the forward recognition camera is suspected.

Terminal No. (Symbol)

Wiring Color

Terminal Description

Condition

Specified Condition

P5-5 (CA1P) - P5-10 (GND)

L - LA

CAN communication signal

Power switch on (IG)

Pulse generation

(See waveform 1)

P5-11 (CA1N) - P5-10 (GND)

W - LA

CAN communication signal

Power switch on (IG)

Pulse generation

(See waveform 2)

P5-6 (CANH) - P5-10 (GND)

B - LA

CAN communication signal

Power switch on (IG)

Pulse generation

(See waveform 1)

P5-12 (CANL) - P5-10 (GND)

W - LA

CAN communication signal

Power switch on (IG)

Pulse generation

(See waveform 2)

(1) WAVEFORM 1

Item

Content

Terminal Name

Between P5-5 (CA1P) and P5-10 (GND)

Between P5-6 (CANH) and P5-10 (GND)

Tester Range

1 V/DIV., 10 μs/DIV.

Condition

Power switch on (IG)

HINT:

The waveform varies depending on the CAN communication signal.

(2) WAVEFORM 2

Item

Content

Terminal Name

Between P5-11 (CA1N) and P5-10 (GND)

Between P5-12 (CANL) and P5-10 (GND)

Tester Range

1 V/DIV., 10 μs/DIV.

Condition

Power switch on (IG)

HINT:

The waveform varies depending on the CAN communication signal.

READ NEXT:

 Dtc Check / Clear

DTC CHECK / CLEAR CHECK DTC (a) Connect the Techstream to the DLC3. (b) Turn the power switch on (IG). (c) Turn the Techstream on. (d) Enter the following menus: Body Electrical > Road Sign Assist

 Freeze Frame Data

FREEZE FRAME DATA DESCRIPTION (a) Whenever a road sign assist system DTC is stored, the forward recognition camera stores the current vehicle state (ECU and sensor information) as Freeze Frame Data. C

 Data List / Active Test

DATA LIST / ACTIVE TEST DATA LIST NOTICE: In the table below, the values listed under "Normal Condition" are reference values. Do not depend solely on these reference values when deciding whether a pa

SEE MORE:

 Data List / Active Test

DATA LIST / ACTIVE TEST DATA LIST NOTICE: In the table below, the values listed under "Normal Condition" are reference values. Do not depend solely on these reference values when deciding whether a part is faulty or not. HINT: Using the Techstream to read the Data List allows the values or states of

 Removal

REMOVAL CAUTION / NOTICE / HINT NOTICE: This procedure includes the removal of small-head bolts. Refer to Small-Head Bolts of Basic Repair Hint to identify the small-head bolts. Click here PROCEDURE 1. REMOVE NO. 1 ENGINE COVER SUB-ASSEMBLY Click here 2. REMOVE CAM TIMING OIL CONTROL SOLENOID

© 2016-2025 Copyright www.lexguide.net