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:
Problem Symptoms Table
PROBLEM SYMPTOMS TABLE HINT:
Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are listed in order of probability in the "Suspected Area" column of the table. Check each symptom by checking the suspect
AV Signal Stoppage (Low Battery Voltage) (B158F)
DESCRIPTION This DTC is stored when a video or audio signal is interrupted due to auxiliary battery voltage input to the radio receiver assembly dropping temporarily. DTC No. Detection Item DTC Detection Condition Trouble Area B158F AV Signal Stoppage (Low Battery Voltage) A video o
