Lexus ES: Lin Communication System (for Gasoline Model)
Lexus ES (XZ10) Service Manual / Power Source & Network / Networking / Lin Communication System (for Gasoline Model)
- Lost Communication with Power Source Control (B278C)
- No Response from ID BOX (B2789)
- No Response from Steering Lock ECU (B2786)
- Communication Malfunction between ECUs Connected by LIN (B2785)
- LIN Communication Bus Malfunction (B2325)
- P/W Master Switch Communication Stop (B1206,B1273,B2321-B2324)
- Diagnostic Trouble Code Chart
- Data List / Active Test
- Dtc Check / Clear
- Diagnosis System
- Terminals Of Ecu
- How To Proceed With Troubleshooting
- System Description
- System Diagram
- Parts Location
- Precaution
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Lost Communication with Power Source Control (B278C)
DESCRIPTION When an internal malfunction is detected in the certification ECU (smart key ECU assembly), this DTC is stored. DTC No. Detection Item DTC Detection Condition Trouble Area B27
No Response from ID BOX (B2789)
DESCRIPTION This DTC is stored when LIN communication between the certification ECU (smart key ECU assembly) and ID code box (immobiliser code ECU) stops for 10 seconds or more. DTC No. Detection
No Response from Steering Lock ECU (B2786)
DESCRIPTION This DTC is stored when LIN communication between the certification ECU (smart key ECU assembly) and steering lock ECU (steering lock actuator or upper bracket assembly) stops for 10 secon
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How To Proceed With Troubleshooting
CAUTION / NOTICE / HINT HINT:
Use the following procedure to troubleshoot the parking support brake system.
*: Use the Techstream.
PROCEDURE 1. VEHICLE BROUGHT TO WORKSHOP
NEXT 2. CUSTOMER PROBLEM ANALYSIS
NEXT 3. INSPECT BATTERY VOLT
Removal
REMOVAL PROCEDURE 1. PRECAUTION (for HV Model) NOTICE:
When replacing the radio receiver assembly or navigation ECU, always replace it with a new one. If a radio receiver assembly or navigation ECU which was installed to another vehicle is used, the following may occur:
A communication malfunc
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