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 MANUALSTOYOTA2004CELICA GT, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 167 (ANTI-LOCK BRAKE SYSTEM)DIAGNOSTIC TESTSDTC C1241/ 41: IG POWER SOURCE CIRCUITDTC DETECTING CONDITION
2004 Toyota Celica GT, Standard
DTC C1241/ 41: IG Power Source Circuit: DTC Detecting Condition
2004 Toyota Celica GT, StandardSECTION DTC Detecting Condition
WARNING: This page is about a different car, the 2003 Toyota Prius, 2002 Toyota Prius, and 2001 Toyota Prius. However, it is still accessible from the selected car via links, so may be relevant.
Detection of the following condition may set DTC 41:
- At vehicle speed of about 2 mph or more, IG1 or +BS terminal voltage is less than 89.4 volts, which continues for 10 seconds or more.
- IG1 terminal voltage is less than 8.5 volts or below, ABS solenoid relay is open, ABS motor relay is open, or solenoid fault detecting conditions are set.
- +BS terminal voltage is 19 volts or above for 1 second or longer.
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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.