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 MANUALSLEXUS2011GS 450H V6-3.5L (2GR-FSE) HYBRIDREPAIR AND DIAGNOSISA L L DIAGNOSTIC TROUBLE CODES ( DTC )TESTING AND INSPECTIONU CODE CHARTSU0100HYBRID CONTROL SYSTEM
2011 Lexus GS 450h V6-3.5L (2GR-FSE) Hybrid
Hybrid Control System
2011 Lexus GS 450h V6-3.5L (2GR-FSE) HybridSECTION Hybrid Control System
L110 HYBRID VEHICLE CONTROL: HYBRID CONTROL SYSTEM: U0100-211,U0100-212,U0100-530,U0100-774,U0100-784,U0129-220,U0129-222,U0129-528,U0133-147,U0146-146: Lost Communication with ECM / PCM "A"
U0146-146 - Lost Communication with Gateway "A"
DESCRIPTION
* The hybrid vehicle control ECU transmits and receives signals to and from the ECM, skid control ECU assembly, absorber control ECU, and network gateway ECU via CAN communication.
MONITOR DESCRIPTION
If the hybrid vehicle control ECU detects a problem with CAN communication between the ECU and ECM, the hybrid vehicle control ECU will illuminate the MIL and set a DTC.
MONITOR STRATEGY
TYPICAL ENABLING CONDITIONS
TYPICAL MALFUNCTION THRESHOLDS
COMPONENT OPERATING RANGE
INSPECTION PROCEDURE
CAUTION:
* Before inspecting the high-voltage system or disconnecting the low voltage connector of the inverter with converter assembly, take safety precautions such as wearing insulated gloves and removing the service plug grip to prevent electrical shocks. After removing the service plug grip, put it in your pocket to prevent other technicians from accidentally reconnecting it while you are working on the high-voltage system.
* After disconnecting the service plug grip, wait for at least 10 minutes before touching any of the high-voltage connectors or terminals. After waiting, check the voltage at the inspection point in the inverter with converter assembly. The voltage should be 0 V before beginning work.
HINT
Waiting for at least 10 minutes is required to discharge the high-voltage capacitor inside the inverter with converter assembly.
PROCEDURE
1. CHECK DTC OUTPUT (ALL)
(a) Connect the Techstream to the DLC3.
(b) Turn the power switch on (IG).
(c) Check for DTCs of all systems by following the prompts on the Techstream screen.
HINT
If DTCs other than CAN communication DTCs are output simultaneously, first repair the CAN communication problem, and then perform troubleshooting for other DTCs.
NEXT -- GO TO CAN COMMUNICATION SYSTEM
RENDER: 1.0x
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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.