Dtc U0073/86 Control Module Communication Bus Off
Drive Line. Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35
DESCRIPTION
INSPECTION PROCEDURE
CHECK FOR DTC
DTC U0073/86 Control Module Communication Bus OFF |
DTC U0100/85 Lost Communication with ECM / PCM "A" |
DTC U0126/84 Lost Communication with Steering Angle Sensor Module |
DTC U0129/83 Lost Communication with Brake System Control Module |
DESCRIPTION
- The 4WD control ECU inputs the signals sent from the ECM, skid control ECU, and steering angle sensor via the CAN communication system.
- When DTCs indicating a CAN communication system malfunction are output, repair the CAN communication system before repairing each corresponding sensor.
DTC No.
| DTC Detection Condition
| Trouble Area
|
U0073/86
| - When the following continues for 5 seconds or more:
- Signals from the 4WD control ECU are not received.
- When the following occurs 10 times consecutively:
- A communication malfunction (bus off) occurs one or more times within 0.1 second.
| - Wire harness (CANL, CANH circuit)
- 4WD control ECU
|
U0100/85
| - When both of the following continue for 2 seconds or more:
- The voltage of the IG1 terminal is 10 V or more.
- At a vehicle speed of 60 km/h (38 mph) or more, communication with the ECM cannot be performed.
| - Wire harness (CANL, CANH circuit)
- 4WD control ECU
- ECM
|
U0126/84
| - When both of the following continue for 1 second or more:
- The voltage of the IG1 terminal is 10 V or more.
- Communication with the steering angle sensor cannot be performed.
- When all of the following occur 10 times consecutively:
- The voltage of the IG1 terminal is 10 V or more.
- The condition that communication with the steering angle sensor cannot be performed occurs once within 5 seconds.
- Occurs 10 times or more within 60 seconds.
| - Wire harness (CANL, CANH circuit)
- 4WD control ECU
- Steering angle sensor
|
U0129/83
| - When the following continues for 3 seconds or more:
- The voltage of the IG1 terminal is 10 V or more.
- Communication with the skid control ECU cannot be performed.
| - Wire harness (CANL, CANH circuit)
- 4WD control ECU
- Skid control ECU
|
INSPECTION PROCEDURE
Check for DTC (RAV4_ACA30 RM0000020BA00FX.html).
Record the output DTC (4WD control system).
- HINT:
- When DTCs indicating a CAN communication system malfunction are output, repair the CAN communication system before repairing each corresponding sensor.
NEXT |
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GO TO CAN COMMUNICATION SYSTEM |
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