Lexus ES: Terminals Of Ecu
TERMINALS OF ECU
CHECK SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY)
| *a | Front view of wire harness connector (to Skid Control ECU (Brake Actuator Assembly)) | - | - |
(a) Disconnect the A40 skid control ECU (brake actuator assembly) connector.
(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 |
|---|---|---|---|---|
| A40-30 (+BS) - Body ground | G - Body ground | Parking brake motor power supply | Always | 11 to 14 V |
| A40-36 (IG1) - Body ground | B - Body ground | IG power supply | Engine switch on (IG) | 11 to 14 V |
| A40-46 (GND1) - Body ground | W-B - Body ground | Ground | Always | Below 1 Ω |
| A40-14 (GND2) - Body ground | W-B - Body ground | Ground | Always | Below 1 Ω |
| A40-2 (MRR+) - Body ground | Y - Body ground | Parking brake motor RH (parking brake actuator assembly RH) (+) | - | - |
| A40-3 (MRR-) - Body ground | L - Body ground | Parking brake motor RH (parking brake actuator assembly RH) (-) | - | - |
| A40-13 (MRL+) - Body ground | G - Body ground | Parking brake motor LH (parking brake actuator assembly LH) (+) | - | - |
| A40-12 (MRL-) - Body ground | W - Body ground | Parking brake motor LH (parking brake actuator assembly LH) (-) | - | - |
| A40-31 (SWI1) - Body ground | P - Body ground | Electric parking brake switch assembly | - | - |
| A40-32 (SWO1) - Body ground | SB - Body ground | Electric parking brake switch assembly | - | - |
| A40-15 (SWI2) - Body ground | W - Body ground | Electric parking brake switch assembly | - | - |
| A40-16 (SWO2) - Body ground | V - Body ground | Electric parking brake switch assembly | - | - |
| A40-5 (CANH) - Body ground | Y - Body ground | CAN communication line H | - | - |
| A40-19 (CANL) - Body ground | W - Body ground | CAN communication line L | - | - |
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Test Mode Procedure
TEST MODE PROCEDURE REAR BRAKE PAD REPLACEMENT MODE *1 Rear Disc Brake Piston *2 Nut *a The nut moves inward in pad replacement mode HINT: When replacing the rear disc brake pad a
Vehicle Control History
VEHICLE CONTROL HISTORY DESCRIPTION
Vehicle Control History is a function that captures and stores ECU data when triggered by specific vehicle behavior.
If the customer states that the engine sta
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Pressure Control Solenoid "G" Circuit Short to Ground or Open (P280714)
DESCRIPTION Refer to DTC P280712. Click here DTC No. Detection Item DTC Detection Condition Trouble Area MIL Memory Note P280714 Pressure Control Solenoid "G" Circuit Short to Ground or Open While the vehicle is being driven so that gear changes occur, a short to ground or o
Freeze Frame Data
FREEZE FRAME DATA FREEZE FRAME DATA HINT:
When a DTC is stored, the freeze frame data stores the current vehicle (sensor) state as.
The freeze frame data cannot be cleared or updated until the recorded DTCs are cleared.
(a) Using the Techstream, the state of the vehicle (sensors) when the sy
