Lexus ES: 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 suspected areas in the order they are listed. Replace parts as necessary.
- Inspect the fuses and relays related to this system before inspecting the suspected areas below.
| Symptom | Suspected Area | Link |
|---|---|---|
| Tire pressure warning light does not illuminate despite tire pressure decreasing | Initialization | |
| Check Data List (ID Tire Inflation Pressure) | | |
| ID code check (Registration) | | |
| Tire pressure warning light remains illuminated (Goes off during initial check) | Tire pressure warning light circuit | |
| Tire pressure warning light remains illuminated (Illuminates during initial check) | Check Data List (ID Tire Inflation Pressure) | |
| Tire pressure adjustment | | |
| ID code check (Registration) | | |
| Initialization | | |
| Initialization cannot be done | Tire pressure warning reset switch | |
| Tire position not identified | Refer to "Tire position not identified". | |
| Cannot switch to automatic ID registration mode | Refer to "Cannot switch to automatic ID registration mode". | |
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Terminals Of Ecu
TERMINALS OF ECU CHECK TIRE PRESSURE WARNING ECU AND RECEIVER (a) Disconnect the N8 tire pressure warning ECU and receiver connector and measure the voltage or resistance on the wire harness side.
Diagnosis System
DIAGNOSIS SYSTEM CHECK WARNING LIGHT NOTICE:
When there is a problem with the tire pressure warning system, the tire pressure warning light blinks at 0.5 second intervals, and illuminates after 1 m
Dtc Check / Clear
DTC CHECK / CLEAR CHECK DTC (for TIRE PRESSURE WARNING ECU AND RECEIVER) (a) Turn the power switch off. (b) Connect the Techstream to the DLC3. (c) Turn the power switch on (IG). (d) Turn the Techstre
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Main Body ECU Vehicle Information Reading/Writing Process Malfunction (B15F6)
DESCRIPTION This DTC is stored when items controlled by the main body ECU (multiplex network body ECU) cannot be customized via the navigation system vehicle customization screen. HINT: The main body ECU (multiplex network body ECU) controls the items for the following systems that are customizable
Headlight aim
Vertical movement adjusting
bolts
Vehicles with single-beam headlights
Adjustment bolt A
Adjustment bolt B
Vehicles with triple-beam headlights
Adjustment bolt A
Adjustment bolt B
Before checking the headlight
aim
Make sure the vehicle has a full tank
of gasoline and t
