Toyota AVENSIS 2000 Supplement Manual page 339

DI–208
DTC C1241 / 41
CIRCUIT DESCRIPTION
This is the power source for the ECU, hence the brake actuators.
DTC No.
At a vehicle speed of 6 km/h (4 mph) or more, the condition
C1241 / 41 that low battery voltage is 10 V or less and high battery
voltage is more than 17.4 V.
AVENSIS/CORONA SUP (RM781E)
DIAGNOSTICS
IG Power Source Circuit
DTC Detecting Condition
– ABS WITH EBD & BA & TRC & VSC SYSTEM
S Battery
S Charging system
S Power source circuit
Trouble Area
DI7ZS–01