Lexus ES manuals

Lexus ES: Terminals Of Ecu

TERMINALS OF ECU

*1

Inverter with Converter Assembly

HINT:

Since the inverter with converter assembly uses waterproof connectors, the voltage and waveforms cannot be inspected directly. Standard voltage readings and waveforms are indicated for reference only.

Inverter with Converter Assembly

Terminal No.

(Symbol)

Wiring Color

Input/Output

Terminal Description

Condition

Standard Condition

A58-1 (CANH) - A58-24 (GND1)

V - W-B

Input/Output

CAN communication signal

Power switch on (IG)

Pulse generation

(Waveform 1)

A58-5 (+B2) - A58-24 (GND1)

GR - W-B

Input

Motor generator control ECU (MG ECU) power source

Power switch on (IG)

11 to 14 V

A58-6 (+B) - A58-24 (GND1)

W - W-B

Input

Motor generator control ECU (MG ECU) power source

Power switch on (IG)

11 to 14 V

A58-7 (CANL) - A58-24 (GND1)

W - W-B

Input/Output

CAN communication signal

Power switch on (IG)

Pulse generation

(Waveform 1)

A58-10 (GI) - A58-24 (GND1)

W - W-B

Input

Camshaft position sensor signal

Power switch on (READY), engine running

Pulse generation

(Waveform 2)

A58-12 (IGCT) - A58-24 (GND1)

BE - W-B

Input

Motor generator control ECU (MG ECU) power source

Power switch on (IG)

11 to 14 V

A58-17 (NE) - A58-24 (GND1)

B - W-B

Input

Crankshaft position sensor signal

Power switch on (READY), engine running

Pulse generation

(Waveform 3)

A58-19 (HMCL) - A58-24 (GND1)

W - W-B

Input/Output

Communication signal

Power switch on (IG)

Pulse generation

(Waveform 4)

A58-20 (HMCH) - A58-24 (GND1)

B - W-B

Input/Output

Communication signal

Power switch on (IG)

Pulse generation

(Waveform 4)

A58-22 (HSDN) - A58-24 (GND1)

W - W-B

Input

MG shutdown signal

Power switch on (READY)

0 to 1 V

C89-1 (MSN) - C89-2 (MSNG)

G - Y

Input

Motor resolver signal

Motor resolver running

Pulse generation

(Waveform 5)

C89-3 (MCSG) - C89-4 (MCS)

B - L

Input

Motor resolver signal

Motor resolver running

Pulse generation

(Waveform 5)

C89-5 (MRF) - C89-6 (MRFG)

W - R

Output

Motor resolver reference signal

Motor resolver running

Pulse generation

(Waveform 5)

C89-8 (GRF) - C89-9 (GRFG)

SB - V

Output

Generator resolver reference signal

Generator resolver running

Pulse generation

(Waveform 6)

C89-10 (GSN) - C89-11 (GSNG)

GR - P

Input

Generator resolver signal

Generator resolver running

Pulse generation

(Waveform 6)

C89-12 (GCSG) - C89-13 (GCS)

BR - LG

Input

Generator resolver signal

Generator resolver running

Pulse generation

(Waveform 6)

NOTICE:

Do not measure the voltage or waveform on the sealed side of the inverter with converter assembly connector. Doing so may damage the connector because the connector is waterproof.

Oscilloscope waveforms

HINT:

Oscilloscope waveforms shown in the illustrations are examples for reference only. Noise, chattering, etc. are not shown.

(a) Waveform 1 (CAN communication signal)

Item

Content

Terminal

CH1: A58-1 (CANH) - A58-24 (GND1)

CH2: A58-7 (CANL) - A58-24 (GND1)

Equipment Setting

1 V/DIV., 50 μs./DIV.

Condition

Power switch on (IG)

(b) Waveform 2 (camshaft position sensor signal)

Item

Content

Terminal

A58-10 (GI) - A58-24 (GND1)

Equipment Setting

5 V/DIV., 20 ms./DIV.

Condition

Power switch on (READY), engine running

HINT:

The wavelength becomes shorter as the engine speed increases.

(c) Waveform 3 (crankshaft position sensor signal)

Item

Content

Terminal

A58-17 (NE) - A58-24 (GND1)

Equipment Setting

5 V/DIV., 20 ms./DIV.

Condition

Power switch on (READY), engine running

HINT:

The wavelength becomes shorter as the engine speed increases.

(d) Waveform 4 (communication signal)

Item

Content

Terminal

CH1: A58-19 (HMCL) - A58-24 (GND1)

CH2: A58-20 (HMCH) - A58-24 (GND1)

Equipment Setting

1 V/DIV., 50 μs./DIV.

Condition

Power switch on (IG)

HINT:

The waveform will vary depending on the content of the digital communication (digital signal).

(e) Waveform 5 (motor resolver signal)

Item

Content

Terminal

CH1: C89-5 (MRF) - C89-6 (MRFG)

CH2: C89-1 (MSN) - C89-2 (MSNG)

CH3: C89-4 (MCS) - C89-3 (MCSG)

Equipment Setting

CH1: 10 V/DIV., 1 ms./DIV.

CH2: 5 V/DIV., 1 ms./DIV.

CH3: 5 V/DIV., 1 ms./DIV.

Condition

Motor resolver running

HINT:

The width indicated by (A) becomes shorter as the rotor speed increases.

(f) Waveform 6 (generator resolver signal)

Item

Content

Terminal

CH1: C89-8 (GRF) - C89-9 (GRFG)

CH2: C89-10 (GSN) - C89-11 (GSNG)

CH3: C89-13 (GCS) - C89-12 (GCSG)

Equipment Setting

CH1: 10 V/DIV., 1 ms./DIV.

CH2: 5 V/DIV., 1 ms./DIV.

CH3: 5 V/DIV., 1 ms./DIV.

Condition

Generator resolver running

HINT:

The width indicated by (A) becomes shorter as the rotor speed increases.

READ NEXT:

 Diagnosis System

DIAGNOSIS SYSTEM DESCRIPTION (a) The motor generator control ECU (MG ECU) (inverter with converter assembly) has a self-diagnosis system. If the motor generator control ECU (MG ECU), motor generator s

 Dtc Check / Clear

DTC CHECK / CLEAR CHECK FOR 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: Powertrain / Motor Generator / Tro

 Freeze Frame Data

FREEZE FRAME DATA FREEZE FRAME DATA HINT: The motor generator control ECU records vehicle and driving condition information as freeze frame data the moment a DTC is stored. It can be used for estimati

SEE MORE:

 Components

COMPONENTS ILLUSTRATION *A for Driver Side *B for Front Passenger Side *1 COURTESY LIGHT ASSEMBLY *2 FRONT DOOR TRIM BOARD SUB-ASSEMBLY *3 MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY WITH FRONT DOOR UPPER ARMREST BASE PANEL *4 NO. 2 DOOR TRIM PAD *5 POWER WINDOW REGU

 Components

COMPONENTS ILLUSTRATION *1 REAR CENTER ULTRASONIC SENSOR *2 REAR CENTER ULTRASONIC SENSOR RETAINER *3 REAR CORNER ULTRASONIC SENSOR *4 REAR CORNER ULTRASONIC SENSOR RETAINER *5 ULTRASONIC SENSOR CLIP - - ● Non-reusable part - - ILLUSTRATION *1 ULTRA

© 2016-2024 Copyright www.lexguide.net