Lexus LX - Page 149

DTC C15C3/75 Brake System Control Module Malfunction
for Preparation Click here
DESCRIPTION
The steering control ECU detects a vehicle speed error by receiving an error signal from the skid control ECU via CAN communication.
If the steering control ECU detects this error signal, it will turn the master warning light on, store this DTC, and stop VGRS operation.
DTC Code DTC Detection Condition Trouble Area
C15C3/75
The steering control ECU receives a vehicle speed error signal via CAN
communication.
Vehicle stability control system
CAN communication system
Steering control ECU
INSPECTION PROCEDURE
1.CHECK DTC (VEHICLE STABILITY CONTROL SYSTEM)
a. Check for DTCs in the vehicle stability control system ( Click here).
Result
Result Proceed to
DTC is not output OK
DTC is output NG
NG
GO TO VEHICLE STABILITY CONTROL SYSTEM (DIAGNOSTIC
TROUBLE CODE CHART) (Click here)
OK
2.CHECK DTC (CAN COMMUNICATION SYSTEM)
a. Using the intelligent tester, check if the CAN communication system is functioning normally ( Click here for LHD, Click here for RHD).
Result
Result Proceed to
DTC is not output (for LHD) A
DTC is not output (for RHD) B
DTC is output (for LHD) C
DTC is output (for RHD) D
B REPLACE STEERING CONTROL ECU (Click here)
C
GO TO CAN COMMUNICATION SYSTEM (DIAGNOSTIC
TROUBLE CODE CHART) (Click here)
D
GO TO CAN COMMUNICATION SYSTEM (DIAGNOSTIC
TROUBLE CODE CHART) (Click here)
A
REPLACE STEERING CONTROL ECU (Click here)