SELF-DIAGNOSTIC FUNCTION TABLE (EPS SYSTEM) 9 - 65 EPS (ELECTRIC POWER STEERING) SYSTEM ELEC – + ELEC – + Fault code No. Item Symptom Probable cause of malfunction 11 13 15 16 EPS torque sensor No normal signals are received from the torque sensor. • Open or short circuit in wire harness. • Malfunction in torque sensor. • Malfunction in EPS control unit. 21 Speed sensor No normal signals are received from the speed sensor. • Open or short circuit in wire harness. • Malfunction in speed sensor. • Malfunction in EPS control unit. 22 Engine speed signal No normal signals are received from the ECU. • Open or short circuit in wire harness. • Malfunction in ECU. • Malfunction in EPS control unit.
41 42 43 45 EPS motor No normal signals are received from the EPS motor. • Open or short circuit in wire harness. • Malfunction in EPS motor. • Malfunction in EPS control unit. 52 EPS control unit Relay contacts in the EPS control unit are welded together. Malfunction in EPS control unit. 53 EPS control unit Battery voltage has dropped. • Faulty battery. • Malfunction in the charging system. Refer to “CHARGING SYSTEM”. • Malfunction in EPS control unit. 54 EPS control unit Relay contacts in the EPS control unit are welded together. Malfunction in EPS control unit. 55 EPS control unit Battery voltage has increased. Abnormality exists between the EPS and the ECU.
• Malfunction in the charging system. Refer to “CHARGING SYSTEM”. • Malfunction in EPS control unit.