DESCRIPTION
If a malfunction is detected in the power supply circuit, the skid control ECU (housed in the brake actuator assembly) stores this DTC and the fail-safe function prohibits ABS operation.
This DTC is stored when the IG1 terminal voltage deviates from the DTC detection condition due to a malfunction in the power supply or charging circuit, such as the battery or generator circuit, etc.
The DTC is cleared when the IG1 terminal voltage returns to normal.
DTC Code | DTC Detection Condition | Trouble Area |
---|---|---|
C1241 | One of the following conditions is met:
|
|
WIRING DIAGRAM
INSPECTION PROCEDURE
Note
When replacing the brake actuator assembly, perform zero point calibration and store system information Click here.
Inspect the fuses for circuits related to this system before performing the following inspection procedure.
PROCEDURE
INSPECT BATTERY
Inspect the battery voltage.
Standard voltage |
---|
11 to 14 V |
Result | Proceed to |
---|---|
OK | A |
NG (for 2GR-FSE) | B |
NG (for 4GR-FSE) | C |
B |
CHECK OR REPLACE CHARGING SYSTEM OR BATTERY Click here |
C |
CHECK OR REPLACE CHARGING SYSTEM OR BATTERY Click here |
A |
CHECK HARNESS AND CONNECTOR (IG1 TERMINAL)
Disconnect the skid control ECU (brake actuator assembly) connector.
*a | Front view of wire harness connector (to Skid Control ECU [Brake Actuator Assembly]) |
Measure the voltage according to the value(s) in the table below.
Standard Voltage | ||||||
---|---|---|---|---|---|---|
|
Result | Proceed to |
---|---|
OK | A |
NG (for 2GR-FSE) | B |
NG (for 4GR-FSE) | C |
NG |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
OK |
CHECK HARNESS AND CONNECTOR (GND1 TERMINAL)
Disconnect the skid control ECU (brake actuator assembly) connector.
*a | Front view of wire harness connector (to Skid Control ECU [Brake Actuator Assembly]) |
Measure the resistance according to the value(s) in the table below.
Standard Resistance | ||||||
---|---|---|---|---|---|---|
|
NG |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
OK |
RECONFIRM DTC
Clear the DTCs Click here.
Turn the engine switch off.
Start the engine.
Perform a road test.
Check if the same DTC is output Click here.
Result | Proceed to |
---|---|
DTC is not output | A |
DTC is output | B |
B |
REPLACE BRAKE ACTUATOR ASSEMBLY Click here |
A |
CHECK FOR INTERMITTENT PROBLEMS Click here