Suzuki Grand Vitara JB416 / JB420 / JB419. Manual — part 490
9C-12 Instrumentation / Driver Info. / Horn:
Warning Buzzer Circuit Symptom Diagnosis
S6JB0A9304015
NOTE
• Use of SUZUKI scan tool makes it easy to check whether a faulty condition is on the input side or
output side of BCM. For checking procedure, refer to “Diagnosis Using Output Test Function of
SUZUKI Scan Tool” under “Scan Tool Data in Section 10B”.
• Check each part in the order from the top of the following list.
Cigarette Lighter Symptom Diagnosis (If Equipped)
S6JB0A9304016
Horn Symptom Diagnosis
S6JB0A9304017
Condition
Possible cause
Correction / Reference Item
Warning buzzer shows no
sounding
Circuit fuse blown
Replace fuse and check for short circuit.
Driver side door switch faulty
Check driver side door switch referring to
“Door Switch (Front / Rear / Rear End Door)
Inspection”.
Lighting switch faulty
Check lighting switch referring to “Headlight
Switch (in Lighting Switch) Inspection in
Section 9B”.
Key reminder switch faulty
Check key reminder switch referring to
“Ignition Switch Inspection”.
Wiring or ground faulty
Repair circuit.
BCM faulty
Replace after making sure that none of above
parts is faulty.
Condition
Possible cause
Correction / Reference Item
Cigarette lighter shows
no operation
Circuit fuse blown
Replace fuse and check for short circuit.
ACC relay faulty
Replace relay
Cigarette lighter faulty
Check cigarette lighter.
Ignition switch faulty
Check ignition switch referring to “Ignition
Switch Inspection”.
Wiring or grounding faulty
Repair circuit.
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 referring to “Horn Relay
Inspection”.
Wiring or grounding faulty
Repair circuit.
Horn faulty
Check horn referring to “Horn Inspection”.
Instrumentation / Driver Info. / Horn: 9C-13
Information Display Symptom Diagnosis (If Equipped)
S6JB0A9304018
NOTE
This thermometer indicates the ambient temperature in back of front bumper. 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.
• Vehicle speed signal is faulty.
• The ignition switch is turned on again within 2 hours.
Condition
Possible cause
Correction / Reference Item
No displaying of
information display
Circuit fuse Blown
Replace fuse and check for short circuit.
Wiring 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
(If Equipped)”.
Vehicle speed signal faulty
Check ECM for DTC referring to “DTC Check:
For Petrol Engine Model in Section 1A”.
Wiring or grounding faulty
Repair as necessary.
Information display unit faulty
Replace unit.
BCM faulty
Replace after making sure that none of above
parts is faulty.
Display does not change
at –30
°
C
Outside air temperature is –30
°C (–22
°F) or less
—
Outside air temperature sensor faulty
Check outside air temperature sensor referring
to “Outside Air Temperature Sensor Inspection
(If Equipped)”.
Information display unit faulty
Replace unit.
BCM faulty
Replace after making sure that none of above
parts is faulty.
Display does not change
at 50
°
C
Outside air temperature is 50
°C (122
°F) or more
—
Outside air temperature sensor faulty
Check outside air temperature sensor referring
to “Outside Air Temperature Sensor Inspection
(If Equipped)”.
Information display unit faulty
Replace unit.
BCM faulty
Replace after making sure that none of above
parts is faulty.
Display of thermometer
does not change at “- - -
°
C”
Outside air temperature sensor faulty
Check outside air temperature sensor referring
to “Outside Air Temperature Sensor Inspection
(If Equipped)”.
Outside air temperature sensor circuit is
open or short
Repair circuit.
Wiring or grounding faulty
Repair circuit.
Information display unit faulty
Replace unit.
BCM faulty
Replace after making sure that none of above
parts is faulty.
9C-14 Instrumentation / Driver Info. / Horn:
Clock Symptom Diagnosis (If Equipped)
S6JB0A9304019
Audio System Symptom Diagnosis (If Equipped)
S6JB0A9304020
Radio
NOTE
Electronic part / system with undiagnosed problem may cause electromagnetic interference.
Electromagnetic interference condition may have poor radio reception. To test for presence of
electromagnetic interference in part / system, perform the following procedures.
1. Turn ignition switch to OFF.
2. Systematically disconnect the electronic part / system connector(s) one at a time.
3. Turn ignition switch to ON.
4. Check any improvement in radio reception.
Display of fuel
consumption does not
change at “- - - l / 100 km
(km/l, MPG)”
Vehicle is not running (instantaneous
fuel consumption mode)
—
Fuel consumption was reset (average
fuel consumption mode, if equipped)
Vehicle runs for a while.
Vehicle speed signal faulty
Check ECM for DTC referring to “DTC Check:
For Petrol Engine Model in Section 1A” or
“DTC Check: For Diesel Engine Model in
Section 1A”.
Wiring or grounding faulty
Repair circuit.
ECM faulty
Check input and output signal of ECM.
Information display unit faulty
Replace unit.
BCM faulty
Replace after making sure that none of above
parts is faulty.
Condition
Possible cause
Correction / Reference Item
Condition
Possible cause
Correction / Reference Item
No displaying of clock
Circuit fuse Blown
Replace fuse and check for short circuit.
Wiring and/or grounding faulty
Repair as necessary.
Clock unit faulty
Replace unit.
Condition
Possible cause
Correction / Reference Item
Poor radio reception
Out of service area (Poor location)
—
Antenna faulty
Replace antenna.
Antenna amplifier faulty
Replace antenna amplifier.
Electrical part / system faulty
Repair or replace electrical part / system
referring to after mentioned NOTE.
Wiring and/or grounding faulty
Repair as necessary.
Radio assembly faulty
Replace radio assembly.
Radio does not operate
and speaker does not
sound
Circuit fuse(s) blown
Replace fuse(s) and check for short circuit.
Wiring and/or grounding faulty
Repair as necessary.
Radio assembly faulty
Replace radio assembly.
Radio does not operate,
but speaker sound
Wiring and/or grounding faulty
Repair as necessary.
Radio assembly faulty
Replace radio assembly.
Individual speaker is
noisy or inoperative
Wiring and/or grounding faulty
Repair as necessary.
Speaker faulty
Replace speaker.
Radio assembly faulty
Replace radio assembly.
Sound quality is poor
Out of service area (Poor location)
—
Speaker installed incorrectly
Install correctly.
Wiring and/or grounding faulty
Repair as necessary.
Speaker faulty
Replace speaker.
Radio assembly faulty
Replace radio assembly.
Instrumentation / Driver Info. / Horn: 9C-15
CD Player
Auto Volume Control System
Remote Audio Control Switch Symptom Diagnosis (If Equipped)
S6JB0A9304021
Condition
Possible cause
Correction / Reference Item
CD-ROM does not insert
Another CD-ROM already inserted
Eject CD-ROM.
Circuit fuse blown
Replace fuse and check for short circuit.
Wiring and/or grounding faulty
Repair as necessary.
Extraneous material come to be mixed
CD player
Clear extraneous material from CD player or
replace radio assembly.
Radio assembly faulty
Replace radio assembly.
CD-ROM does not eject
Circuit fuse blown
Replace fuse and check for short circuit.
Wiring and/or grounding faulty
Repair as necessary.
Extraneous material come to be mixed
in CD player
Clear extraneous material from CD player or
replace radio assembly.
Radio assembly faulty
Replace radio assembly.
CD player does not load
CD-ROM
CD-ROM faulty
—
CD-ROM inserted with incorrect side up Insert correctly.
Temperature in cabin is too hot
—
Water droplets form on internal lens
Dry about 1 hour with power on.
Radio assembly faulty
Replace radio assembly.
Sound skips or is noisy
CD-ROM faulty
—
Driving vibration
—
Water droplets form on internal lens
Dry about 1 hour with power on.
Radio assembly installed incorrectly
Install correctly.
Radio assembly faulty
Replace radio assembly.
CD player is operative,
but all speakers does not
sound
Wiring and/or grounding faulty
Repair as necessary.
Radio assembly faulty
Replace radio assembly.
Individual speaker is
noisy or inoperative
Wiring and/or grounding faulty
Repair as necessary.
Speaker faulty
Replace speaker.
Radio assembly faulty
Replace radio assembly.
Sound quality or volume
is poor
CD-ROM faulty
—
Wiring and/or grounding faulty
Repair as necessary.
Speaker installed incorrectly
Install correctly.
Speaker faulty
Replace speaker.
Condition
Possible cause
Correction / Reference Item
Sound volume does not
vary according to
changes of vehicle speed
Auto volume control system is “OFF”
mode
Select auto volume control
Vehicle speed signal faulty
Check vehicle speed signal referring to
“Vehicle Speed Signal Inspection (For Audio
Unit) (If Equipped)”.
Wiring or grounding faulty
Repair circuit.
BCM faulty
Check input and output signal of BCM referring
to “Inspection of BCM and Its Circuits in
Section 10B”.
Radio assembly faulty
Replace radio assembly.
Condition
Possible cause
Correction / Reference Item
Audio system is
operative, but remote
control switch does not
control audio system
Remote audio control switch faulty
Check remote audio control switch referring to
“Remote Audio Control Switch Inspection (If
Equipped)”.
Contact coil faulty
Replace contact coil.
Wiring and/or grounding faulty
Repair as necessary.
Radio assembly faulty
Replace radio assembly.
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