Lexus ES manuals

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

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 Inspection

INSPECTION PROCEDURE 1. INSPECT DRIVE MODE SELECT SWITCH (COMBINATION SWITCH ASSEMBLY) (a) Inspect the "Normal" or "Normal/Custom" mode switch: (1) Measure the resistance according to the value(s) in the table below. Standard Resistance: Tester Connection Condition Specified Condition

 Software Incompatibility with Brake System Control Module Not Programmed (U031851)

DESCRIPTION If the forward recognition camera cannot verify the vehicle information sent from the skid control ECU (brake actuator assembly), the forward recognition camera stores DTC U031851. DTC No. Detection Item DTC Detection Condition Trouble Area MIL DTC Output from U031851

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