Lexus ES: Terminals Of Ecu
TERMINALS OF ECU
CHECK VEHICLE APPROACHING SPEAKER CONTROLLER
(a) Disconnect the G42 vehicle approaching speaker controller 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 |
|---|---|---|---|---|
| G42-1 (IG) - Body ground | LA-B - Body ground | IG power supply | Power switch on (IG) | 11 to 14 V |
| Power switch off | Below 1 V | |||
| G42-6 (GND) - Body ground | W-B - Body ground | Ground | Always | Below 1 Ω |
(c) Connect the G42 vehicle approaching speaker controller connector.
(d) Measure the check for pulses according to the value(s) in the table below.
| Terminal No. (Symbol) | Wiring Color | Terminal Description | Condition | Specified Condition |
|---|---|---|---|---|
| G42-7 (SP+) - G42-8 (SP-) | B - W | Vehicle approaching speaker output | Vehicle approaching speaker operating | A waveform synchronized with the sound is output. (See Waveform 1) |
| G42-3 (CANH) - G42-6 (GND) | B - W-B | CAN communication line | Power switch on (IG) | Pulse generation |
| G42-4 (CANL) - G42-6 (GND) | W - W-B | CAN communication line | Power switch on (IG) | Pulse generation |
(1) Waveform 1
| Item | Condition |
|---|---|
| Tester Connection | G42-7 (SP+) - G42-8 (SP-) |
| Tool Setting | 1 V/DIV., 500 ms./DIV. |
| Condition | Vehicle approaching speaker operating |
READ NEXT:
Dtc Check / Clear
DTC CHECK / CLEAR DTC CHECK (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 / Vehicle Proximity No
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
Diagnostic Trouble Code Chart
DIAGNOSTIC TROUBLE CODE CHART Vehicle Proximity Notification System DTC No. Detection Item Link B1350 Speaker Circuit U0129 Lost Communication with Brake System Control Module
SEE MORE:
Brake Switch "A" Circuit Open (P057113)
DESCRIPTION When the brakes are applied by the dynamic radar cruise control system, the skid control ECU (brake actuator assembly) operates the stop light switch assembly (stop light control relay) to illuminate the stop lights. If the ECM receives a signal from the skid control ECU (brake actuator
Inspection
INSPECTION PROCEDURE 1. INSPECT TILT AND TELESCOPIC SWITCH (a) Remove the tilt and telescopic switch. Click here (b) Measure the resistance according to the value(s) in the table below. Standard Resistance: Tester Connection Condition Specified Condition 1 (VC) - 3 (MSW) Tilt up
