DTC Troubleshooting: 29

LKAS Control Unit DTC 29: Steering Angle Sensor (Straight Point of the Steering Angle) Clear the DTCs with the HDS. Do the following check. Suspension is not modified All four tyres the correct size, same manufacturer, and same type All four tyres the properly inflated Steering wheel spoke angle Wheel alignment Are they normally?
YES | - | Go to Step 3 .
NO | - | Adjust the wheel alignment Adjust the tyre pressure Change for the standard tyres Adjust the steering wheel spork angle
Start the engine and test-drive the vehicle at 35 km/h (22 mph) or more, and turn the main switch ON. Watch the adaptive cruise control (ACC)/LKAS indicator. Does the adaptive cruise control (ACC)/LKAS indicator come on?
YES | - | Go to Step 5 .
NO | - | Intermittent failure, the system is OK at this time.■
Clear the DTCs with the HDS. Turn the ignition switch OFF with HDS connected. Align the steering wheel straight ahead. Do this operation precisely, because this steering wheel position is entered the steering angle 0 degrees. Turn the ignition switch ON (II). From the HDS Inspection Menu, select Steering Angle with the HDS. While HDS operating, must not move the steering wheel. Start the engine and test-drive straight the vehicle for more than 60 seconds at 35 km/h (22 mph) or more, and check for Steering Angle 0±5 degrees in the DATA LIST with the HDS. With the steering wheel in the straight ahead position, is STEERING ANGLE within ±5 °?
YES | - | Go to Step 11 .
NO | - | Do the memorizing of the steering angle sensor neutral position. ■
Watch the adaptive cruise control (ACC)/LKAS indicator. Does the adaptive cruise control (ACC)/LKAS indicator come on?
YES | - | Go to Step 12 .
NO | - | The system is OK at this time.■
Check for DTCs with HDS. Is DTC 29 indicated?
YES | - | Check for loose terminals in the LKAS control unit connectors, and repair if necessary. If no poor connections are found, replace the LKAS control unit. ■
NO | - | Do the appropriate troubleshooting for the cord indicated.■