Lexus ES: Diagnosis System
Lexus ES (XZ10) Service Manual / Vehicle Interior / Window / Glass / Power Window Control System (for Hv Model) / Diagnosis System
DIAGNOSIS SYSTEM
DESCRIPTION
(a) Power window control system data and Diagnostic Trouble Codes (DTCs) can be read through the vehicle Data Link Connector 3 (DLC3). When the system seems to be malfunctioning, use the Techstream to check for malfunctions and perform repairs.
CHECK DLC3
(a) Check the DLC3.
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INSPECT AUXILIARY BATTERY VOLTAGE
(a) Measure the auxiliary battery voltage with the power switch off.
Standard Voltage:
11 to 14 V
If the voltage is below 11 V, recharge or replace the auxiliary battery.
READ NEXT:
Dtc Check / Clear
DTC CHECK / CLEAR CHECK 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: Body Electrical / (desired system) / T
Fail-safe Chart
FAIL-SAFE CHART PULSE FAILURE (a) If a pulse sensor built into the power window regulator motor assembly malfunctions, the following power window operations will be prohibited. Multiplex Network Maste
Data List / Active Test
DATA LIST / ACTIVE TEST DATA LIST HINT: Using the Techstream to read the Data List allows the values or states of switches, sensors, actuators and other items to be read without removing any parts. Th
SEE MORE:
Front Side Marker Light Circuit
DESCRIPTION When the light control switch is in the tail or head position, the main body ECU (multiplex network body ECU) sends an illumination request signal to the headlight ECU sub-assembly to illuminate the front side marker lights. WIRING DIAGRAM for LED Type Turn Signal Light for Bulb Type Tu
Brake Switch "A" Circuit Short to Battery (P057112)
DESCRIPTION The skid control ECU (brake actuator assembly) receives stop light switch assembly signals and uses them to determine whether or not the brakes are applied. DTCs may be stored if either of the following occurs:
Stop light switch assembly stuck on malfunction.
The accelerator and bra
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