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.
SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSTOYOTA2011FJ CRUISER 2WD V6-4.0L (1GR-FE)REPAIR AND DIAGNOSISACCESSORIES AND OPTIONAL EQUIPMENTANTITHEFT AND ALARM SYSTEMSTESTING AND INSPECTIONCOMPONENT TESTS AND GENERAL DIAGNOSTICSECU POWER SOURCE CIRCUIT
2011 Toyota FJ Cruiser 2WD V6-4.0L (1GR-FE)
ECU Power Source Circuit
2011 Toyota FJ Cruiser 2WD V6-4.0L (1GR-FE)SECTION ECU Power Source Circuit
ENGINE IMMOBILISER: ENGINE IMMOBILISER SYSTEM: ECU Power Source Circuit
- ECU Power Source Circuit
DESCRIPTION
This circuit provides power to operate the transponder key ECU.
WIRING DIAGRAM
INSPECTION PROCEDURE
NOTICE:
If the transponder key ECU is replaced, register the key and ECU communication ID.
PROCEDURE
1. INSPECT FUSE (IGN FUSE)
(a) Remove the IGN fuse.
(b) Measure the resistance according to the value(s) in the table below.
Standard resistance:
(1) Reinstall the IGN fuse.
NG -- CHECK FOR SHORTS IN ALL HARNESSES AND CONNECTORS CONNECTED TO FUSE AND REPLACE FUSE
OK -- Continue to next step.
2. INSPECT FUSE (ECU-B FUSE)
(a) Remove the ECU-B fuse.
(b) Measure the resistance according to the value(s) in the table below.
Standard resistance:
(1) Reinstall the ECU-B fuse.
NG -- CHECK FOR SHORTS IN ALL HARNESSES AND CONNECTORS CONNECTED TO FUSE AND REPLACE FUSE
OK -- Continue to next step.
3. CHECK HARNESS AND CONNECTOR (TRANSPONDER KEY ECU - BATTERY)
(a) Disconnect the E79 transponder key ECU connector.
(b) Measure the voltage according to the value(s) in the table below.
Standard voltage:
(c) Reconnect the transponder key ECU connector.
NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.
4. CHECK HARNESS AND CONNECTOR (TRANSPONDER KEY ECU - 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 Symptom Related Diagnostic Procedures
RENDER: 1.0x
NO RELATED
Recommended Tools & Savings
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Affiliate disclosure: We may earn a commission at no extra cost to you.
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.