RM35X0E _54 Brake _078667 BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS _0385049 ELECTRONICALLY CONTROLLED BRAKE SYSTEM(w/ VSC OFF Switch) C

BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS  ELECTRONICALLY CONTROLLED BRAKE SYSTEM(w/ VSC OFF Switch)  C052C11  ABS Pump Motor Control Circuit Short to Ground  C052C13  ABS Pump Motor Control Circuit Open  C142719  ABS Pump Motor Circuit Current Above Threshold  


DESCRIPTION

The ABS motor relay is built into the brake actuator assembly.

When the skid control ECU (brake actuator assembly) operates ABS, TRC, VSC or brake assist, the ABS motor relay turns ON and drives the motor pump built into the brake actuator assembly.

DTC No. Detection Item DTC Detection Condition Trouble Area
C052C11 ABS Pump Motor Control Circuit Short to Ground When the voltage at terminal +BM is between 9.6 and 16.4 V, a short to ground in the ABS motor drive circuit is detected during the self test. Skid control ECU (brake actuator assembly)
C052C13 ABS Pump Motor Control Circuit Open An open in the ABS motor drive circuit is detected during the self test. Skid control ECU (brake actuator assembly)
C142719 ABS Pump Motor Circuit Current Above Threshold
·

When the ABS motor relay is operating, an overload in the ABS motor relay is detected for 0.06 seconds or more.

·

When the ABS motor relay is operating, a short in the pump motor drive circuit is detected for 0.06 seconds or more.


Skid control ECU (brake actuator assembly)

DTC Detection Conditions: C142719
Vehicle Condition
Pattern 1 Pattern 2
Diagnosis Condition The ABS motor relay is operating. ○ ○
Malfunction Status An overload in the ABS motor relay is detected. ○ -
A short in the pump motor drive circuit is detected. - ○
Detection Time 0.06 seconds or more. 0.06 seconds or more.
Number of Trips 1 trip 1 trip

HINT:

DTC will be output when conditions for either of the patterns in the table above are met.


CAUTION / NOTICE / HINT

NOTICE:
·

After replacing the skid control ECU (brake actuator assembly), perform acceleration sensor zero point calibration and store system information memorization.

Click hereBrake>BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS>ELECTRONICALLY CONTROLLED BRAKE SYSTEM (w/ VSC OFF Switch)>UTILITY

·

Before performing troubleshooting, make sure to confirm that the battery voltage is normal.

Click hereGeneral>INTRODUCTION>HOW TO TROUBLESHOOT ECU CONTROLLED SYSTEMS>HOW TO PROCEED WITH TROUBLESHOOTING

·

The system may store DTC C052F14 due to a drop in battery voltage. If a DTC regarding low system supply power voltage is output at the same time, perform troubleshooting for that DTC first.

·

If the vehicle has stored DTC C052F14 due a drop in battery voltage, it can be cleared by driving the vehicle at a speed of 15 km/h (9 mph) or more for 0.48 seconds or more and then clearing the DTCs using the GTS.



PROCEDURE