Suzuki GA413, Service Manual

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TROUBLE DIAGNOSIS (FOR TROUBLE NOT INDICATED BY ON BOARD
DIAGNOSTIC SYSTEM)
This section describes trouble diagnosis of P/S system parts whose trouble is not indicated by the on-board diag-
nostic system (self-diagnostic function).
When DTC No.12 is indicated by the on-board diagnostic system (self-diagnosis function) and assuredly those
steering basic parts as described in DIAGNOSIS CHART in SECTION 3 are all in good condition, check following
power steering system parts which may be a possible cause for each symptom of the steering.
ELECTRICAL POWER STEERING (P/S) SYSTEM 3B1-27
SYMPTOM POSSIBLE CAUSE INSPECTION
Steering wheel
feels heavy
Steering wheel installed improperly
(twisted)
Poor performance of torque sensor
Poor performance of motor and clutch
Faulty steering column
Poor performance of VSS
Install steering wheel correctly.
Check torque sensor. Refer to ON-VEHICLE IN-
SPECTION of TORQUE SENSOR.
Check motor and clutch. Refer to ON-VEHICLE
INSPECTION of MOTOR AND CLUTCH.
Replace.
Check VSS. Refer to SECTION 6E.
Vehicle pulls to
one side during
straight driving
Poor performance of torque sensor Check torque sensor. Refer to ON-VEHICLE IN-
SPECTION of TORQUE SENSOR.
Poor recovery
from turns
Poor performance of torque sensor
Faulty steering column
Check torque sensor. Refer to ON-VEHICLE IN-
SPECTION of TORQUE SENSOR.
Replace.