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 DIAGNOSISMAINTENANCEWHEELS AND TIRESTIRE MONITORING SYSTEMTESTING 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
TIRE AND WHEEL: TIRE PRESSURE WARNING SYSTEM: ECU Power Source Circuit
- ECU Power Source Circuit
DESCRIPTION
This is the power source for the tire pressure warning ECU.
WIRING DIAGRAM
INSPECTION PROCEDURE
NOTICE:
* When replacing the tire pressure warning ECU, read the IDs stored in the old ECU using a Techstream and write them down before removal.
* It is necessary to perform registration Programming and Relearning of the transmitter IDs into the tire pressure warning ECU after the ECU has been replaced.
PROCEDURE
1. INSPECT FUSE (ECU-IG)
(a) Remove the ECU-IG fuse from the main body ECU.
(b) Measure the resistance according to the value(s) in the table below.
Standard resistance:
NG -- CHECK HARNESS AND CONNECTOR (TIRE PRESSURE WARNING ECU - FUSE)
OK -- Continue to next step.
2. CHECK HARNESS AND CONNECTOR (TIRE PRESSURE WARNING ECU - BATTERY)
(a) Disconnect the E74 ECU connector.
(b) Measure the voltage according to the value(s) in the table below.
Standard voltage:
NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.
3. CHECK HARNESS AND CONNECTOR (TIRE PRESSURE WARNING ECU - BODY GROUND)
(a) Disconnect the E74 ECU connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard resistance:
NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- REPLACE TIRE PRESSURE WARNING ECU Removal
4. CHECK HARNESS AND CONNECTOR (TIRE PRESSURE WARNING ECU - FUSE)
(a) Disconnect the E74 ECU connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard resistance:
NG -- REPLACE FUSE AND REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- REPLACE FUSE
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.