Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSTOYOTA2011LANDCRUISER V8-5.7L (3UR-FE)REPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSINFORMATION BUSDESCRIPTION AND OPERATIONLIN COMMUNICATION SYSTEM
2011 Toyota Landcruiser V8-5.7L (3UR-FE)
LIN Communication System
2011 Toyota Landcruiser V8-5.7L (3UR-FE)SECTION LIN Communication System
NETWORKING: LIN COMMUNICATION SYSTEM: SYSTEM DIAGRAM
SYSTEM DESCRIPTION
1. LIN COMMUNICATION SYSTEM DESCRIPTION
The LIN communication system is used for communication between the components listed below. Each part of the LIN communication system has a component as a control master.
(a) Window and Sliding Roof Components that Use LIN Communication Bus:
HINT
*: Control Master
(1) Main Body ECU (Cowl Side Junction Block LH)*
(2) Master Switch
(3) Front Power Window Regulator Motor LH
(4) Front Power Window Regulator Motor RH
(5) Rear Power Window Regulator Motor LH
(6) Rear Power Window Regulator Motor RH
(7) Sliding Roof ECU
(b) Certification Components that Use LIN Communication Bus:
HINT
*: Control Master
(1) Certification ECU (Smart Key ECU Assembly)*
(2) Main Body ECU (Cowl Side Junction Block LH)
(3) Steering Lock Actuator
(4) ID Code Box (Immobiliser Code ECU)
(c) Air Conditioning Components that Use LIN Communication Bus:
HINT
*: Control Master
(1) Air Conditioning Amplifier*
(2) Front Air Conditioning Control Panel (w/o Navigation System)
(3) Rear Air Conditioning Control Panel
(d) Rain Sensor Components that Use LIN Communication:
HINT
*: Control Master
(1) Windshield Wiper ECU*
(2) Rain Sensor
2. LIN COMMUNICATION SYSTEM DTC
The control master components shown below store LIN communication system DTCs when there is a malfunction in the LIN communication. If LIN communication stops, the control master of that part of the LIN communication system stores DTCs.
(a) Main Body ECU (Cowl Side Junction Block LH)
(b) Certification ECU (Smart Key ECU Assembly)
(c) Air Conditioning Amplifier
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.