Lexus ES: Terminals Of Ecu
TERMINALS OF ECU
| *a | Hybrid Vehicle Control ECU | - | - |
HINT:
The standard normal voltage between each pair of hybrid vehicle control ECU terminals is shown in the table below. The appropriate conditions for checking each pair of terminals are also indicated. The result of checks should be compared with the standard normal voltage for that pair of terminals, displayed in the Specified Condition column. The illustration above can be used as a reference to identify the hybrid vehicle control ECU terminal locations.
Hybrid Vehicle Control ECU| Terminal No. (Symbol) | Wiring Color | Input/Output | Terminal Description | Condition | Specified Condition |
|---|---|---|---|---|---|
| A33-31 (HMCH) - G59-6 (E1) | B - W-B | IN/OUT | CAN communication signal | Power switch on (IG) | Pulse generation (Waveform 1) |
| A33-6 (MREL) - G59-6 (E1) | G - W-B | OUT | IGCT relay | Power switch on (IG) | 11 to 14 V |
| A32-17 (LIN3) - G59-6 (E1) | L - W-B | IN/OUT | LIN communication signal | Power switch on (READY) | Pulse generation |
| A33-30 (HMCL) - G59-6 (E1) | W - W-B | IN/OUT | CAN communication signal | Power switch on (IG) | Pulse generation (Waveform 1) |
(a) Oscilloscope waveforms
HINT:
Oscilloscope waveform samples are provided here for informational purposes. Noise and fluttering waveforms have been omitted.
(1) Waveform 1 (CAN communication signal)
| Item | Content |
|---|---|
| Terminal | CH1: A33-31 (HMCH) - G59-6 (E1) CH2: A33-30 (HMCL) - G59-6 (E1) |
| 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).
READ NEXT:
How To Proceed With Troubleshooting
PROCEDURE 1. VEHICLE BROUGHT TO WORKSHOP
NEXT 2. CONFIRM PROBLEM SYMPTOMS
NEXT 3. CUSTOMER PROBLEM ANALYSIS (a) Check if the vehicle has be
System Diagram
SYSTEM DIAGRAM
Parts Location
PARTS LOCATION ILLUSTRATION *1 INVERTER WITH CONVERTER ASSEMBLY *2 COMPRESSOR WITH MOTOR ASSEMBLY *3 AUXILIARY BATTERY *4 FUSIBLE LINK BLOCK ASSEMBLY - BATT-S FUSE *5 BATTERY
SEE MORE:
Brake Pressure Control Solenoid "C" Control Circuit Short to Battery (C14F112,...,C14F149)
DESCRIPTION The ABS solenoid relay and reservoir cut solenoid valves are built into the brake actuator assembly. When the brakes are operating, the reservoir cut solenoid valves supply brake fluid from the brake master cylinder reservoir assembly to the pump motor as necessary. When this DTC is stor
Fuel Rail Pressure Sensor "A" Signal Stuck in Range (P01902A,P019064)
DESCRIPTION Refer to DTC P019011. Click here DTC No. Detection Item DTC Detection Condition Trouble Area MIL Memory Note P01902A Fuel Rail Pressure Sensor "A" Signal Stuck in Range When target high pressure side fuel pressure changes, the change in fuel pressure sensor value
