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UNBALANCE STEERING WHEEL TURNING FORCE (TORQUE VARIATION) STC-35 < SYMPTOM DIAGNOSIS > C D E F H I J K L M A B STC N O P UNBALANCE STEERING WHEEL TURNING FORCE (TORQUE VARIA- Description INFOID:0000000009485809 Unbalance steering wheel turning force (torque variation). Diagnosis Procedure INFOID:0000000009485810 1. PERFORM SELF-DIAGNOSIS With CONSULT 1. Turn the ignition switch OFF to ON. 2. Perform EPS self-diagnosis. YES >> Check the DTC. Refer to NO >> GO TO 2. 2. CHECK THE ILLUMINATION OF THE EPS WARNING LAMP Check the EPS warning lamp while the engine is started. YES >> GO TO 3. NO >> Refer to . 3. CHECK STEERING COLUMN AND STEERING GEAR Check the steering column assembly and steering gear assembly. • Steering column assembly. Refer to • Steering gear assembly. Refer to . Is the inspection result normal? YES >> GO TO 4. NO >> Repair or replace the specific malfunctioning part. 4. CHECK EPS CONTROL UNIT SIGNAL (1) With CONSULT 1. Start the engine. CAUTION: Never drive the vehicle. 2. Turn steering wheel from full left stop to full right stop. 3. Select ASSIST LEVEL in DATA MONITOR in EPS. YES >> GO TO 7. NO >> GO TO 5. 5. CHECK EPS CONTROL UNIT SIGNAL (2) With CONSULT Select BATTERY VOLT in DATA MONITOR in EPS. YES >> GO TO 6. NO >> Perform trouble diagnosis of EPS control unit power supply and ground. Refer to . 6. CHECK EPS CONTROL UNIT SIGNAL (3) With CONSULT 1. Select ASSIST LEVEL in DATA MONITOR in EPS. 2. Stop the EPS system until the item in DATA MONITOR becomes 100%. NOTE: While stopping the EPS system, do not turn steering wheel. 3. Check that the symptom continues. |