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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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
Check Bus 4 Lines for Short Circuit
DESCRIPTION There may be a short circuit between the CAN main bus lines and/or CAN branch lines when the resistance between terminals 22 (CA2H) and 7 (CA2L) of the central gateway ECU (network gateway ECU) is below 54 Ω. Symptom Trouble Area Resistance between terminals 22 (CA2H) and 7 (CA
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