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.
Terminals Of Ecu
- CHECK A/C AMPLIFIER ASSEMBLY
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
- Measure the voltage of the wire harness side connectors.
Standard Voltage
STANDARD VOLTAGETester Connection Wire Color Terminal Description Condition Specified Condition J58-3 (RDFG) - J58-20 (GND) B - W-B Rear Defogger Signal Engine switch on (IG) Rear defogger switch OFF 11 to 14 V - Measure the resistance of the wire harness side connectors.
Standard Resistance
STANDARD RESISTANCETester Connection Wire Color Terminal Description Condition Specified Condition J58-20 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω If the result is not as specified, there may be a malfunction on the wire harness side.
- Measure the voltage of the wire harness side connectors.
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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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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