DTC Code | DTC Name |
---|---|
U0073 | Control Module Communication Bus OFF |
U0114 | Lost Communication with 4WD Control ECU |
DESCRIPTION
The skid control ECU (brake actuator assembly) receives signals from the 4 wheel drive control ECU via the CAN communication system.
DTC No. | Detection Item | DTC Detection Condition | Trouble Area |
---|---|---|---|
U0073 | Control Module Communication Bus OFF | The condition that the bus OFF state occurs once or more within 0.1 seconds occurs 10 times in succession while the voltage at the IG1 terminal is between 10 and 17.4 V. (Sent signals cannot be received.) | CAN communication system |
U0114 | Lost Communication with 4WD Control ECU | The CAN signal from the 4 wheel drive control ECU is lost or malfunctioning for 1 second. |
|
PROCEDURE
CHECK IF EACH ECU CONNECTOR IS SECURELY CONNECTED
Turn the ignition switch off.
Check if 4 wheel drive control ECU or skid control ECU (brake actuator assembly) is securely connected.
OK |
---|
Each connector is securely connected. |
Result | |||
---|---|---|---|
|
NG |
CONNECT CONNECTOR TO EACH ECU CORRECTLY |
OK |
RECONFIRM DTC
Turn the ignition switch off.
Record the output DTCs (for ABS and CAN communication).
for ABS: Click here
for CAN communication system for LHD: Click here
for CAN communication system for RHD: Click here
Tech Tips
If the CAN communication system DTC and the relevant sensor DTCs are output simultaneously, troubleshoot the relevant sensor DTCs (for ABS) after the CAN communication system returns to normal.
Result | ||||||||
---|---|---|---|---|---|---|---|---|
|
A |
CHECK CAN COMMUNICATION SYSTEM for LHD: Click here |
B |
REPAIR CIRCUIT INDICATED BY OUTPUT DTC Click here |
C |
USE SIMULATION METHOD TO CHECK Click here |