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 MANUALSLEXUS2009ES 350 V6-3.5L (2GR-FE)REPAIR AND DIAGNOSISBODY AND FRAMELOCKSKEYLESS ENTRYTESTING AND INSPECTIONCOMPONENT TESTS AND GENERAL DIAGNOSTICSPOWER SOURCE CIRCUIT
2009 Lexus ES 350 V6-3.5L (2GR-FE)
Power Source Circuit
2009 Lexus ES 350 V6-3.5L (2GR-FE)SECTION Power Source Circuit
DOOR LOCK: WIRELESS DOOR LOCK CONTROL SYSTEM: Power Source Circuit
Power Source Circuit
DESCRIPTION
The certification ECU provides power for the door control receiver operation.
WIRING DIAGRAM
INSPECTION PROCEDURE
PROCEDURE
1. INSPECT CERTIFICATION ECU (+B TERMINAL)
(a) Measure the voltage according to value(s) in the table below.
Standard voltage:
NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.
2. INSPECT CERTIFICATION ECU (RC0 TERMINAL)
(a) Measure the voltage according to the value(s) in the table below.
Standard voltage:
OK -- CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU - DOOR CONTROL RECEIVER)
NG -- Continue to next step.
3. CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU - BATTERY - BODY GROUND)
(a) Disconnect the E13 certification ECU connector.
(b) Measure the voltage and resistance according to the value(s) in the table below.
Standard:
NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- REPLACE CERTIFICATION ECU
4. CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU - DOOR CONTROL RECEIVER)
(a) Disconnect the M5 door control receiver connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard resistance:
NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.
5. CHECK HARNESS AND CONNECTOR (BODY GROUND)
(a) Measure the resistance according to the value(s) in the table below.
Standard resistance:
NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE
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.