The electric brake booster (brake booster with master cylinder assembly) communicates with the following ECUs and sensors via CAN communication.
ECM
Hybrid vehicle control ECU
Inverter with converter assembly
Certification ECU (smart key ECU assembly)
Skid control ECU (brake actuator assembly)
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | MIL | DTC Output from | Note |
|---|---|---|---|---|---|---|
| U010087 | Lost Communication with ECM/PCM "A" 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 ·
Electric brake booster (brake booster with master cylinder assembly) |
Comes on | Brake Booster | ·
SAE Code: U0100 ·
Output ECU: Electric brake booster (brake booster with master cylinder assembly) |
| U011087 | Lost Communication with Drive Motor Control Module "A" Missing Message | When the IG terminal voltage is 10 V or more, data from the inverter with converter assembly cannot be received for 2 seconds or more. | ·
CAN communication system ·
Inverter with converter assembly ·
Electric brake booster (brake booster with master cylinder assembly) |
Comes on | Brake Booster | ·
SAE Code: U0110 ·
Output ECU: Electric brake booster (brake booster with master cylinder assembly) |
| U012987 | Lost Communication with Brake System Control Module "A" Missing Message | When the IG terminal voltage is 9.5 V or more, communication between the electric brake booster (brake booster with master cylinder assembly) and the skid control ECU (brake actuator assembly) is abnormal for 2 seconds or more. | ·
CAN communication system ·
Skid control ECU (brake actuator assembly) ·
Electric brake booster (brake booster with master cylinder assembly) |
Does not come on | Brake Booster | Output ECU: Electric brake booster (brake booster with master cylinder assembly) |
| U025E87 | Lost Communication with Electronic Brake Booster Control Module "A" Missing Message | When the IG terminal voltage is 10 V or more, communication between the electric brake booster (brake booster with master cylinder assembly) and the skid control ECU (brake actuator assembly) is abnormal for 2 seconds or more. | ·
CAN communication system ·
Skid control ECU (brake actuator assembly) ·
Electric brake booster (brake booster with master cylinder assembly) |
Comes on | Brake Booster | ·
SAE Code: U025E (Case 1 and 2) ·
Output ECU: Electric brake booster (brake booster with master cylinder assembly) |
| U030057 | Internal Control Module Software Incompatibility Invalid/Incompatible Software Component | When the vehicle information stored in both the hybrid vehicle control ECU and the electric brake booster (brake booster with master cylinder assembly) does not match. | ·
Electric brake booster (brake booster with master cylinder assembly) ·
Hybrid vehicle control ECU |
Comes on | Brake Booster | ·
SAE Code: U0300 ·
Output ECU: Electric brake booster (brake booster with master cylinder assembly) |
| U110757 | Power Management Module Invalid/Incompatible Software Component | When the vehicle information stored in both the certification ECU (smart key ECU assembly) and the electric brake booster (brake booster with master cylinder assembly) does not match. | ·
Electric brake booster (brake booster with master cylinder assembly) ·
Certification ECU (smart key ECU assembly) |
Does not come on | Brake Booster | Output ECU: Electric brake booster (brake booster with master cylinder assembly) |
| U110787 | Lost Communication with Power Management Module Missing Message | When the IG terminal voltage is 10 V or more, data from the certification ECU (smart key ECU assembly) cannot be received for 3 seconds or more. | ·
CAN communication system ·
Certification ECU (smart key ECU assembly) ·
Electric brake booster (brake booster with master cylinder assembly) |
Comes on | Brake Booster | ·
SAE Code: U1107 ·
Output ECU: Electric brake booster (brake booster with master cylinder assembly) |
| U111A87 | Lost Communication with ECM/PCM "A" (ch2) 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 ECM cannot be received for 2 seconds or more. | ·
CAN communication system ·
ECM ·
Electric brake booster (brake booster with master cylinder assembly) |
Comes on | Brake Booster | ·
SAE Code: U111A ·
Output ECU: Electric brake booster (brake booster with master cylinder assembly) |
| U115887 | Lost Communication with Electronic Brake Booster Control Module "A" (ch2) Missing Message | When the IG terminal voltage is 10 V or more, electric brake booster (brake booster with master cylinder assembly) and skid control ECU (brake actuator assembly) communication malfunction occurs for 2 seconds or more. | ·
CAN communication system ·
Skid control ECU (brake actuator assembly) ·
Electric brake booster (brake booster with master cylinder assembly) |
Does not come on | Brake Booster | Output ECU: Electric brake booster (brake booster with master cylinder assembly) |
| U117087 | Lost Communication with Brake System Control Module (ch2) Missing Message | When the IG terminal voltage is 9.5 V or more, communication between the electric brake booster (brake booster with master cylinder assembly) and the skid control ECU (brake actuator assembly) is abnormal for 2 seconds or more. | ·
CAN communication system ·
Skid control ECU (brake actuator assembly) ·
Electric brake booster (brake booster with master cylinder assembly) |
Does not come on | Brake Booster | Output ECU: Electric brake booster (brake booster with master cylinder assembly) |
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 5 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 Booster / Utility / All Readiness.
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 U010087, U011087, U012987, U025E87, U030057, U110757, U110787, U111A87, U115887 or U117087. | A |
| U010087, U011087, U012987, U025E87, U030057, U110757, U110787, U111A87, U115887 or U117087 is output. | B |
| DTCs are not output. | C |
A
B
C