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 Matrix FWD L4-1.8L (2ZR-FE)FACTORY OEM SERVICE PROCEDURE
Removal
2ZR-FE ENGINE CONTROL: INTEGRATION RELAY: REMOVAL
1. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL
2. REMOVE INTEGRATION NO.1 RELAY
(a) Remove the No. 1 relay block cover.
(b) Using a screwdriver with its tip wrapped in protective tape, disengage the 2 claws and then pull the integration relay out of the No. 1 relay block.
(c) Disconnect the 3 connectors and remove the integration relay.
Factory Service Tools
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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.