DTC Troubleshooting: 34, 37, 50

EPS (LKAS) Control Unit DTC 34: EPS (LKAS) Control Unit (Problem with the CPU communication line) EPS (LKAS) Control Unit DTC 37: EPS (LKAS) Control Unit (Problem with the motor voltage) EPS (LKAS) Control Unit DTC 50: EPS (LKAS) Control Unit (CPU)

1. Clear the DTCs with the HDS.

1. Turn the ignition switch OFF.

1. Start the engine and test-drive the vehicle at 72 km/h (45 mph) or more, and turn the main switch ON.

1. 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.■

1. Check for DTCs with HDS.

Is DTC 34, 37 or 50 indicated?

YES | - | Check for loose terminals in the EPS (LKAS) control unit connectors, and repair if necessary. If no poor connections are found, replace the EPS (LKAS) control unit. ■
NO | - | Perform the appropriate troubleshooting for the code indicated.■