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 MANUALSTOYOTA2004MATRIX XR, FWD, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 521 (AUTOMATIC TRANSMISSION SHIFT CONTROL SYSTEM - DIAGNOSIS)DTC C2307: POWER SOURCE MALFUNCTIONINSPECTION PROCEDURE
2004 Toyota Matrix XR, FWD, Standard
Inspection Procedure
2004 Toyota Matrix XR, FWD, StandardSECTION Inspection Procedure
WARNING: This page is about a different car, the 2004 Toyota Prius. However, it is still accessible from the selected car via links, so may be relevant.
- INSPECT TRANSMISSION CONTROL ECU ASSY (E1 TERMINAL)
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- Disconnect the T4 connector from the transmission control ECU assy.
- Measure the resistance according to the value(s) in the table below.
Standard:
TESTER CONNECTION SPECIFIED CONDITIONTester connection (Symbols) Condition Specified condition T4-15 (E1) - Body ground Always Below 1 Ω NG: REPAIR OR REPLACE HARNESS OR CONNECTOR
OK
- CHECK HARNESS AND CONNECTOR (TRANSMISSION CONTROL ECU ASSY -SHIFT CONTROL ACTUATOR ASSY)
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
- Measure the voltage according to the value(s) in the table below.
Standard:
TESTER CONNECTION SPECIFIED CONDITIONTester connection (Symbols) Condition Specified condition T4-10 (MWA) - Body ground Always Below 1 V T4-11 (MVA) - Body ground Always Below 1 V T4-12(MUA) - Body ground Always Below 1 V NG: REPAIR OR REPLACE HARNESS OR CONNECTOR
OK
REPLACE TRANSMISSION CONTROL ECU ASSY
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.