Lexus ES: Check For Intermittent Problems
CHECK FOR INTERMITTENT PROBLEMS
NOTICE:
- If the vehicle or vehicle controls are operated (for example, during initial inspection when the vehicle is brought in for repair) before operation history has been read and saved, the operation history information could be lost.
- The operation history function uses the current system time of the Techstream and the time counter inside the controlling ECU to calculate the times shown in the operation history. For this reason, before reading the operation history, first make sure that the Techstream system clock is accurately set to the current time.
Operation History
HINT:
The main body ECU (multiplex network body ECU) stores Operation History, which can be read using the Techstream, when a malfunction of the power door lock control system occurs.
(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 / Main Body / Utility / Operation History.
Body Electrical > Main Body > Utility| Tester Display |
|---|
| Operation History |
(e) According to the display on the Techstream, read and save the operation history.
| Tester Display |
|---|
| Trunk Lid Open by Trunk SW Input |
| Trunk Lid Open by Trunk SW Input (Outside) |
| Trunk Lid Open by Key Linked Trunk SW Input |
| Trunk Lid Open by Wireless Key Input |
| Trunk Lid Open by Accessory Wireless Input |
| Trunk Lid Open by Auto Entry Key Input |
| Open by kick Sensor Input |
| Trunk Lid Open by Active Test |
| Back Door Open by Back Door SW Input (Auto Entry) |
| Back Door Open by Active Test |
| Back Door Open by Back Door SW Input |
| Fuel Lid Open by Fuel Lid Opener SW Input |
HINT:
Depending on the specifications of the vehicle some items may not be displayed.
Symptom Simulation
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Operation Check
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When the customer requests a change in a function, first make sure that the function can be customized.
Be sure to ma
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Fail-safe Chart
FAIL-SAFE CHART FAIL-SAFE CHART (a) When the skid control ECU (brake actuator assembly) detects a solenoid valve malfunction or abnormal signal from a sensor, the brake actuator assembly cuts power and sends a signal indicating a malfunction of the electronically controlled brake system to the ECM.
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
