DTC Troubleshooting: 102

EPS (LKAS) Control Unit DTC 102: Torque Sensor VS1 and VS2 Lines

1. Clear the DTCs with the HDS.

1. Turn the ignition switch OFF, then turn it ON (II).

1. Watch the adaptive cruise control (ACC)/LKAS indicator.

Does the adaptive cruise control (ACC)/LKAS indicator come on?

YES | - | Go to Step 4 .
NO | - | Intermittent failure, the system is OK at this time.■

1. Check for DTCs with HDS.

Is DTC 102 indicated?

YES | - | Go to Step 5 .
NO | - | Do the appropriate troubleshooting for the cord indicated.■

1. Turn the ignition switch OFF.

1. Disconnect the torque sensor 3P connector and EPS (LKAS) control unit connector D (3P).

1. Check for continuity between EPS (LKAS) control unit connector D (3P) terminal No. 1 and No. 3.

Is there continuity?

YES | - | Repair short between the PNK and WHT/GRN wires in the torque sensor circuit between EPS (LKAS) control unit and torque sensor.■
NO | - | Go to Step 8 .

1. On the sensor side, check for resistance between torque sensor coil 3P connector terminals No. 2 and No. 3.

Is the resistance between 10−40 Ω (at 20 °C, 68 °F)?

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 | - | Replace the torque sensor. ■