Suzuki SWIFT RS415 2017, Service Manual

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Instrumentation / Driver Info. / Horn: 9C-8
Horn Symptom Diagnosis
S4RS0A9304011
Information Display Symptom Diagnosis (If Equipped)
S4RS0A9304012
NOTE:
This thermometer indicates the ambient temperature in back of front bumper member. Under any one
of the following listed conditions, however, even when the ambient temperature goes up, the
thermometer display does not rise so as to correct the rise of the ambient temperature caused by the
radiant heat of the engine. When the ambient temperature drops, the thermometer reading follows the
change in the temperature.
Be sure to bear this in mind when diagnosing trouble.
• The vehicle speed is 30 km/h (18 mph) or lower.
• VSS signal is faulty.
• The ignition switch is turned on again within 2 hours.
Condition Possible cause Correction / Reference Item
Horn does not operate Circuit fuse blown Replace fuse and check for short circuit.
Horn switch faulty Check horn switch.
Horn relay faulty Check horn relay.
Wiring or grounding faulty Repair circuit.
Horn faulty Replace horn.
Condition Possible cause Correction / Reference Item
No displaying of
information display Circuit fuse Blown Replace fuse and check for short circuit.
Wiring and/or grounding faulty Repair as necessary.
Information display unit faulty Replace unit.
Incorrect thermometer
display Outside air temperature sensor faulty Check outside air temperature sensor referring
to “Outside Air Temperature Sensor
Inspection: ”.
VSS signal faulty Check VSS referring to “DTC P0500: Vehicle
Speed Sensor (VSS) Malfunction: in Section
1A” or “DTC P0722: Output Speed Sensor
(VSS) Circuit No Signal: in Section 5A”.
Wiring and/or grounding faulty Repair as necessary.
BCM faulty Replace after making sure that none of above
parts is faulty.
Display does not change
at –30
q
C
Outside air temperature is –30
q
C (–22
q
F) or less
—
Outside air temperature sensor faulty Check outside air temperature sensor referring
to “Outside Air Temperature Sensor
Inspection: ”.
Outside air temperature sensor wiring
circuit open circuit and/or short to power
circuit Repair as necessary.
BCM faulty Replace after making sure that none of above
parts is faulty.
Display does not change
at 50
q
C
Outside air temperature is 50
q
C (122
q
F) or more
—
Outside air temperature sensor faulty Check outside air temperature sensor referring
to “Outside Air Temperature Sensor
Inspection: ”.
Outside air temperature sensor wiring
circuit short to ground circuit Repair as necessary.
BCM faulty Replace after making sure that none of above
parts is faulty.