Monitor Description

C1202 (Case 1): 

1. When the brake fluid level warning switch (brake master cylinder reservoir assembly) is on, brake booster pump assembly is on and brake on for a certain amount of time, the skid control ECU assembly judges that the brake fluid level in the reservoir is low and illuminates the MIL and stores this DTC.

C1202 (Case 2): 

1. After the skid control ECU assembly has completed startup, the brake fluid level warning switch (brake master cylinder reservoir assembly) is on and the brake pedal is depressed, the skid control ECU assembly determines that the reservoir level is low and illuminates the MIL and stores a DTC.

C120F: 

1. When the voltage at terminal LBL of the skid control ECU is a specific value or more (open circuit judgment range) for a certain amount of time, the skid control ECU judges that there is an open in the fluid warning switch circuit and illuminates the MIL and stores this DTC.