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Home >> Toyota >> 2009 >> Tacoma X-Runner >> Repair and Diagnosis >> Brakes >> Traction Control >> Brake Control >> VEHICLE STABILITY CONTROL SYSTEM (for Hydraulic Brake Booster) >> DTC U0073/94 Control Module Communication Bus OFF: DTC U0100/65 Lost Communication with ECM/PCM: DTC U0123/62 Lost Communication with Yaw Rate Sensor Module: DTC U0124/95 Lost Communication with Lateral Acceleration Sensor Module: DTC U0126/63 Lost Communication with Steering Angle Sensor Module >> Description
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DTC U0073/94 Control Module Communication Bus OFF: DTC U0100/65 Lost Communication with ECM/PCM: DTC U0123/62 Lost Communication with Yaw Rate Sensor Module: DTC U0124/95 Lost Communication with Lateral Acceleration Sensor Module: DTC U0126/63 Lost Communication with Steering Angle Sensor Module: Description

The skid control ECU exchanges signals with the ECM, steering angle sensor, yaw rate and deceleration sensor, power steering ECU, main body ECU and combination meter via CAN communication.

DTC DETECTING CONDITIONS CHART

DTC Code DTC Detection Condition Trouble Area
U0073/94 When any of the following is detected:
  1. With the IG1 terminal voltage is between 10 and 17.4 V, after the output of data from the skid control ECU is completed, the sending continues for 5 seconds or more.
  2. The condition that bus OFF state occurs once or more within 0.1 seconds occurs 10 times in succession. (Sent signals cannot be received.)
  3. With the IG1 terminal voltage is between 10 and 17.4 V, a delay in receiving data from the yaw rate and deceleration sensor and steering angle sensor continues for 1 second or more.
  4. or more. 4. With the IG1 terminal voltage is between 10 and 17.4 V, the following occurs 10 times in succession.
  • The condition that a delay in receiving data from the yaw rate and deceleration sensor and steering angle sensor occurs more than once within 5 seconds.
 CAN communication system
U0100/65 When either of the following is detected:
  1. With the IG1 terminal voltage is between 10 and 17.4 V, and the vehicle speed 15 km/h (9 mph) or more, data cannot be sent to the ECM for 2 seconds or more.
  2. The IG1 terminal voltage is between 10 and 17.4 V, and the vehicle speed 15 km/h (9 mph) or more for 2 seconds or more.
 CAN communication system (Skid control ECU to ECM)
U0123/62 When either of the following is detected:
  1. With the IG1 terminal voltage is between 10 and 17.4 V, data from the yaw rate sensor cannot be received for 1 second or more.
  2. With the IG1 terminal voltage is between 10 and 17.4 V, the following occurs 10 times in succession.
  • The condition that data from the yaw rate sensor cannot be received occurs once or more within 5 seconds.
 CAN communication system (Skid control ECU to yaw rate and deceleration sensor)
U0124/95 When either of the following is detected:
  1. With the IG1 terminal voltage is between 10 and 17.4 V, data from the deceleration sensor cannot be received for 1 second or more.
  2. With the IG1 terminal voltage is between 10 and 17.4 V, the following occurs 10 times in succession.
  • The condition that data from the deceleration sensor cannot be received occurs once or more within 5 seconds.
 CAN communication system (Skid control ECU to yaw rate and deceleration sensor)
U0126/63 When either of the following is detected:
  1. With the IG1 terminal voltage is between 10 and 17.4 V, data from the steering angle sensor cannot be received for 1 second or more.
  2. With the IG1 terminal voltage is between 10 and 17.4 V, the following occurs 10 times in succession.
  • The condition that data from the steering angle sensor cannot be received occurs once or more within 5 seconds.
 CAN communication system (Skid control ECU to steering angle sensor)
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