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Four Wheels Drive Control System

WARNING: This page is about a different car, the 2007 Lexus GS 350. However, it is still accessible from the selected car via links, so may be relevant.
DIAGNOSTIC TROUBLE CODE CHART

DTC Code Detection Item Trouble Area
C1241/94  Low Power Supply Voltage
  1. Battery
  2. ECU-IG LH fuse
  3. Wire harness (IG1 circuit, GND circuit)
  4. CAN communication system
  5. 4WD control ECU
C1296/96  ABS Malfunction
  1. Brake control system (speed sensor circuit)
  2. Wire harness (speed signal circuit)
  3. 4WD control ECU
C1297/97  Steering Angle Sensor
  1. Steering angle sensor
  2. CAN communication system
  3. Brake control system
C1298/98  Linear Solenoid Circuit
  1. Transfer transmission wire
  2. Wire harness
  3. Transfer control solenoid assembly
  4. 4WD control ECU
C1299/99  Cancellation of 4WD Control
  1. Tire size
  2. 4WD control ECU
U0073/86  Control Module Communication Bus OFF
  1. Wire harness (CANL, CANH circuit)
  2. 4WD control ECU
U0100/85  Lost Communication with ECM / PCM "A"
  1. Wire harness (CANL, CANH circuit)
  2. 4WD control ECU
  3. ECM
U0122/83  Lost Communication with Vehicle Dynamics Control Module
  1. Wire harness (CANL, CANH circuit)
  2. 4WD control ECU
  3. Skid control ECU
U0126/84  Lost Communication with Steering Angle Sensor Module
  1. Wire harness (CANL, CANH circuit)
  2. 4WD control ECU
  3. Steering angle sensor
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