The skid control ECU (brake actuator assembly) communicates with the following ECUs and sensors via CAN communication.
ECM
Yaw rate and acceleration sensor (airbag ECU assembly)
Steering sensor
Power steering ECU assembly
Main body ECU (multiplex network body ECU)
Airbag ECU assembly
Hybrid vehicle control ECU
Forward recognition camera
Clearance warning ECU assembly*
*: w/ TOYOTA Parking Assist-sensor System
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | MIL | DTC Output from | Note |
|---|---|---|---|---|---|---|
| U010187 | Lost Communication with TCM Missing Message | When the +BS terminal voltage is between 9.6 and 16.5 V, data from the ECM cannot be received for 2 seconds or more. | ·
CAN communication system ·
ECM ·
Skid control ECU (brake actuator assembly) |
Does not come on | Brake/EPB | Output ECU: Skid control ECU (brake actuator assembly) |
| U012500 | Lost Communication with Multi-axis Acceleration Sensor Module "A" (2WD) Missing Message | When the +BS terminal voltage is between 9.6 and 16.5 V, the vehicle speed is 6 km/h (4 mph) or more, data from the yaw rate and acceleration sensor (airbag ECU assembly) cannot be received for 1 second or more. | ·
CAN communication system ·
Yaw rate and acceleration sensor (airbag ECU assembly) ·
Skid control ECU (brake actuator assembly) |
Does not come on | Brake/EPB | Output ECU: Skid control ECU (brake actuator assembly) |
| U012687 | Lost Communication with Steering Angle Sensor Module Missing Message | When the +BS terminal voltage is between 9.6 and 16.5 V, the vehicle speed is 6 km/h (4 mph) or more, data from the steering sensor cannot be received for 1 second or more. | ·
CAN communication system ·
Steering sensor ·
Skid control ECU (brake actuator assembly) |
Does not come on | Brake/EPB | Output ECU: Skid control ECU (brake actuator assembly) |
| U013187 | Lost Communication With Power Steering Control Module Missing Message | When the +BS terminal voltage is between 9.6 and 16.5 V, the vehicle speed is 6 km/h (4 mph) or more, data from the power steering ECU assembly cannot be received for 2 seconds or more. | ·
CAN communication system ·
Power steering ECU assembly ·
Skid control ECU (brake actuator assembly) |
Does not come on | Brake/EPB | Output ECU: Skid control ECU (brake actuator assembly) |
| U014087 | Lost Communication with Body Control Module Missing Message | When the +BS terminal voltage is between 9.6 and 16.5 V, the vehicle speed is 6 km/h (4 mph) or more, data from the main body ECU (multiplex network body ECU) cannot be received for 2 seconds or more. | ·
CAN communication system ·
Main body ECU (multiplex network body ECU) ·
Skid control ECU (brake actuator assembly) |
Does not come on | Brake/EPB | Output ECU: Skid control ECU (brake actuator assembly) |
| U015187 | Lost Communication with Restraints Control Module Missing Message | When the +BS terminal voltage is between 9.6 and 16.5 V, the vehicle speed is 6 km/h (4 mph) or more, data from the airbag ECU assembly cannot be received for 5 seconds or more. | ·
CAN communication system ·
airbag ECU assembly ·
Skid control ECU (brake actuator assembly) |
Does not come on | Brake/EPB | Output ECU: Skid control ECU (brake actuator assembly) |
| U029387 | Lost Communication with Hybrid/EV Powertrain Control Module Missing Message | When the IG terminal voltage is 10 V or more, data from the hybrid vehicle control ECU cannot be received for 2 seconds or more. | ·
CAN communication system ·
Hybrid vehicle control ECU ·
Skid control ECU (brake actuator assembly) |
Comes on | Brake/EPB | ·
SAE Code: U0293 (Case 1, 2 and 3) ·
Output ECU: Skid control ECU (brake actuator assembly) |
| U115087 | Lost Communication with Hybrid Powertrain Control Module (ch2) Missing Message | When the IG terminal voltage is 10 V or more, data from the hybrid vehicle control ECU cannot be received for 2 seconds or more. | ·
CAN communication system ·
Hybrid vehicle control ECU ·
Skid control ECU (brake actuator assembly) |
Comes on | Brake/EPB | ·
SAE Code: U1150 (Case 1 and 2) ·
Output ECU: Skid control ECU (brake actuator assembly) |
| U130857 | Software Incompatibility with Pre-collision Control Module Invalid / Incompatible Software Component | Pre-collision system information sent from the forward recognition camera does not match that stored in the skid control ECU (brake actuator assembly). | ·
CAN communication system ·
Forward recognition camera ·
Skid control ECU (brake actuator assembly) |
Does not come on | Brake/EPB | Output ECU: Skid control ECU (brake actuator assembly) |
| U130957 | Software Incompatibility with Clearance Warning Control Module Invalid / Incompatible Software Component | Clearance warning system information sent from the clearance warning ECU assembly does not match that stored in the skid control ECU (brake actuator assembly). | ·
CAN communication system ·
Clearance warning ECU assembly ·
Skid control ECU (brake actuator assembly) |
Does not come on | Brake/EPB | ·
Output ECU: Skid control ECU (brake actuator assembly) ·
w/ TOYOTA Parking Assist-sensor System |
When performing the normal judgment procedure, make sure that the driver door is closed and is not opened at any time during the procedure.
After repair has been completed, clear the DTC and then check that the vehicle has returned to normal by performing the following All Readiness check procedure.
When clearing the permanent DTCs, refer to the "CLEAR PERMANENT DTC" procedure.
Connect the GTS to the DLC3.
Turn the ignition switch to ON and turn the GTS on.
Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
Turn the ignition switch off.
Turn the ignition switch to ON (READY) and turn the GTS on.
Wait for 2 seconds or more. [*]
[*]: Normal judgment procedure.
The normal judgment procedure is used to complete DTC judgment and also used when clearing permanent DTCs.
Enter the following menus: Chassis / Brake/EPB* / Utility / All Readiness.
*: Electric Parking Brake System
Check the DTC judgment result.
If the judgment result shows NORMAL, the system is normal.
If the judgment result shows ABNORMAL, the system has a malfunction.
If the judgment result shows INCOMPLETE, perform driving pattern again.
Clear the DTCs.
Turn the ignition switch off.
| Proceed to |
|---|
| NEXT |
NEXT
Using the GTS to operate the Health Check.
Check for DTCs.
| Result | Proceed to |
|---|---|
| DTCs for related systems are output together with DTC U010187, U012500, U012687, U013187, U014087, U015187, U029387, U115087, U130857 or U130957. | A |
| U010187, U012500, U012687, U013187, U014087, U015187, U029387, U115087, U130857 or U130957 is output. | B |
| DTCs are not output. | C |
A
B
C