The 4WD ECU assembly receives signals from the ECM, steering sensor and skid control ECU (brake actuator assembly) via CAN communication.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | Warning Indicate | Memory |
|---|---|---|---|---|---|
| U010087 | Lost Communication with ECM/PCM "A" Missing Message | When the ignition switch is ON, the IG1 terminal voltage is 10 V or more and the vehicle speed is 60 km/h (37 mph) or more, signals cannot be received from the ECM for 1 second or more | ·
CAN communication system ·
4WD ECU assembly ·
ECM |
Displayed | Yes |
| U012687 | Lost Communication with Steering Angle Sensor Module Missing Message | When the following continues: -
When the IG1 terminal voltage is 10 V or more, communication with the steering sensor is impossible for 1 second or more -
When the IG1 terminal voltage is 10 V or more, a condition in which communication with the steering sensor is impossible occurs 1 time or more within a 5-second period, and this occurs 10 times within 60 seconds |
·
CAN communication system ·
4WD ECU assembly ·
Steering sensor |
Displayed | Yes |
| U012987 | Lost Communication with Brake System Control Module Missing Message | When the IG1 terminal voltage is 10 V or more, communication with the skid control ECU (brake actuator assembly) is impossible for 3 seconds or more | ·
CAN communication system ·
4WD ECU assembly ·
Skid control ECU (Brake actuator assembly) |
Displayed | Yes |
Check for DTCs.
Record the output DTCs.
When DTCs indicating a CAN communication system malfunction are output, repair the CAN communication system before repairing each corresponding sensor.
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