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 MANUALSLEXUS2006RX 400H AWD V6-3.3L (3MZ-FE) HYBRIDREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSINFORMATION BUSTESTING AND INSPECTIONCOMPONENT TESTS AND GENERAL DIAGNOSTICSOPEN IN ONE SIDE OF CAN SUB BUS LINE
2006 Lexus RX 400h AWD V6-3.3L (3MZ-FE) Hybrid
Open In One Side of CAN Sub Bus Line
2006 Lexus RX 400h AWD V6-3.3L (3MZ-FE) HybridSECTION Open In One Side of CAN Sub Bus Line
Open in One Side of CAN Sub Bus Line
DESCRIPTION
If 2 or more ECUs and/or sensors do not appear on the intelligent tester "BUS CHECK" screen via the CAN VIM, one side of the CAN sub-bus lines may be open. (one side of the CAN-H [sub-bus line] / CANL [sub-bus line] of the ECU and/or sensor is open.)
HINT:
- Perform the following inspections for the ECUs (sensors) that are not displayed on the intelligent tester first. If a malfunction is still not able to be identified, perform the following inspections for all other ECUs (sensors) connected to the CAN communication system.
- The basic inspection procedures that can be used for all related ECUs in common are shown below. "ECU A" represents the following: HV control ECU, steering sensor, yaw rate sensor, skid control ECU, network gateway ECU, television camera ECU, power steering ECU, distance control ECU.
INSPECTION PROCEDURE
DESCRIPTION
If 2 or more ECUs and/or sensors do not appear on the intelligent tester "BUS CHECK" screen via the CAN VIM, one side of the CAN sub-bus lines may be open. (one side of the CAN-H [sub-bus line] / CANL [sub-bus line] of the ECU and/or sensor is open.)
Wiring Diagram:
HINT:
- Perform the following inspections for the ECUs (sensors) that are not displayed on the intelligent tester first. If a malfunction is still not able to be identified, perform the following inspections for all other ECUs (sensors) connected to the CAN communication system.
- The basic inspection procedures that can be used for all related ECUs in common are shown below. "ECU A" represents the following: HV control ECU, steering sensor, yaw rate sensor, skid control ECU, network gateway ECU, television camera ECU, power steering ECU, distance control ECU.
Step 1-2:
INSPECTION PROCEDURE
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.