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.
2012 Toyota Venza FWD V6-3.5L (2GR-FE)FACTORY OEM SERVICE PROCEDURE
Installation
POWER DISTRIBUTION: MAIN BODY ECU: INSTALLATION
1. INSTALL MAIN BODY ECU (DRIVER SIDE JUNCTION BLOCK ASSEMBLY)
(a) Install the 5 relays.
(b) Connect the 4 connectors.
(c) Connect the connector [A] as shown in the illustration.
NOTICE:
Be sure to engage each connector securely.
(d) Engage the 2 claws.
(e) Install the 3 nuts and install the main body ECU (driver side junction block assembly).
(f) Connect the 2 connectors.
NOTICE:
Be sure to engage the connector securely.
(g) Connect the connector [A] as shown in the illustration.
NOTICE:
Be sure to engage the connector securely.
(h) Connect the connector.
NOTICE:
Be sure to engage each connector securely.
(i) Connect the 3 connectors as shown in the illustration.
NOTICE:
Be sure to engage each connector securely.
(j) Engage the 2 claws to connect the connector [A] as shown in the illustration.
NOTICE:
Be sure to engage the connector securely.
(k) Connect the 3 connectors.
NOTICE:
Be sure to engage each connector securely.
(l) Connect the 4 connectors.
NOTICE:
Be sure to engage each connector securely.
2. INSTALL UPPER INSTRUMENT PANEL
HINT
Refer to the procedure from Install Upper Instrument Panel Sub-assembly Installation.
Factory Service Tools
Use the Manual With the Right Hardware
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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.
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