Lexus ES: Diagnosis System
Lexus ES (XZ10) Service Manual / Vehicle Exterior / Sliding Roof / Convertible / Panoramic Moon Roof System / Diagnosis System
DIAGNOSIS SYSTEM
DESCRIPTION
(a) Panoramic moon roof 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 BATTERY VOLTAGE
(a) Measure the battery voltage.
Standard Voltage:
11 to 14 V
- If the voltage is below 11 V, recharge or replace the battery.
READ NEXT:
Dtc Check / Clear
DTC CHECK / CLEAR CHECK DTC (a) Connect the Techstream to the DLC3. (b) Turn the engine switch on (IG). (c) Turn the Techstream on. (d) Enter the following menus: Body Electrical / Sliding Roof or Sli
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
Diagnostic Trouble Code Chart
DIAGNOSTIC TROUBLE CODE CHART Panoramic Moon Roof System DTC No. Detection Item Link B2341 Sensor (Motor) Failure B2342 Switch Failure B2343 Position Initialization
SEE MORE:
Internal Control Module Monitoring Processor Performance Watchdog/Safety MCU Failure (P060A47)
MONITOR DESCRIPTION The main CPU and sub CPU of the ECM perform data communication between each other. The main CPU monitors the communications and WDC pulses from the sub CPU. When the signal malfunctions below are detected, this DTC is stored. DTC No. Detection Item DTC Detection Condition
Key-off Operation Function Operates even if Operating Conditions are not Satisfied
DESCRIPTION The sliding roof ECU (sliding roof drive gear sub-assembly) operates its built-in motor according to the sliding roof switch (map light sub-assembly) operation. Using the sliding roof switch (map light sub-assembly), if the sliding roof can be operated normally when 45 seconds or more ha
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