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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Parts Location
PARTS LOCATION ILLUSTRATION *1 SPIRAL CABLE SUB-ASSEMBLY *2 STEERING WHEEL HEATER SWITCH (REFRESHING SEAT SWITCH) *3 INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY - ECU-IG1 NO. 3 FUSE *4 AIR CONDITIONING CONTROL ASSEMBLY *5 AIR CONDITIONING AMPLIFIER ASSEMBLY *6 RADIO RECEIV
Inspection
INSPECTION PROCEDURE 1. INSPECT OIL PUMP RELIEF VALVE (a) Coat the oil pump relief valve with engine oil, then check that it falls smoothly into the valve hole by its own weight. HINT: If the oil pump relief valve does not fall smoothly, replace the oil pump assembly. 2. INSPECT OIL P
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