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 MANUALSTOYOTA2011FJ CRUISER 2WD V6-4.0L (1GR-FE)REPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSINFORMATION BUSTESTING AND INSPECTIONPINOUT VALUES AND DIAGNOSTIC PARAMETERSMULTIPLEX COMMUNICATION SYSTEM
2011 Toyota FJ Cruiser 2WD V6-4.0L (1GR-FE)
Multiplex Communication System
2011 Toyota FJ Cruiser 2WD V6-4.0L (1GR-FE)SECTION Multiplex Communication System
MULTIPLEX COMMUNICATION: MULTIPLEX COMMUNICATION SYSTEM: TERMINALS OF ECU
1. CHECK MAIN BODY ECU
(a) Disconnect the 1B, 1E, 1F, 1L and E6 main body ECU connectors.
(b) Measure the voltage of the wire harness side connectors.
Standard voltage:
If the result is not as specified, there may be a malfunction on the wire harness side.
2. CHECK BACK DOOR ECU
(a) Disconnect the S2 ECU connector.
(b) Measure the voltage of the wire harness side connector.
Standard voltage:
If the result is not as specified, there may be a malfunction on the wire harness side.
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.