2006 SUZUKI SX4 check engine

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Diagnostic Information and Procedures
Speedometer and VSS Symptom DiagnosisS6RW0D9304001
Tachometer Symptom DiagnosisS6RW0D9304002
Engine Coolant Temperature (ECT) Meter Symptom DiagnosisS6RW0D9304003
Fuel Meter Symptom DiagnosisS6RW0D9304004
Condition Possible cause Correction / Reference Item
Speedometer shows no
operation or incorrect
operationCircuit fuse blownReplace fuse and check for short circuit.
Front wheel speed sensor or sensor
encoder faulty (M/T model)Check front wheel speed sensor or sensor
encoder referring to “Front and Rear Wheel
Speed Sensor On-Vehicle Inspection in
Section 4E” or “Front Wheel Speed Sensor
Encoder On-Vehicle Inspection in Section 4E”.
Output shaft speed sensor (VSS) faulty
(A/T model)Check output shaft speed sensor (VSS)
referring to “Output Shaft Speed Sensor (VSS)
Inspection in Section 5A”
Wiring or grounding faultyRepair circuit.
Combination meter faulty Replace combination meter.
TCM faulty (A/T model)Check input and output signal of TCM referring
to “Inspection of TCM and Its Circuits in
Section 5A”
ECM faultyReplace after making sure that none of above
parts is faulty.
Condition Possible cause Correction / Reference Item
Tachometer shows no
operation or incorrect
operationCircuit fuse blownReplace fuse and check for short circuit.
Wiring or grounding faultyRepair circuit.
Combination meter faultyReplace combination meter.
ECM faultyReplace after making sure that none of above
parts is faulty.
Condition Possible cause Correction / Reference Item
Engine coolant
temperature (ECT) meter
shows no operation or
incorrect operationCircuit fuse blownReplace fuse and check for short circuit.
ECT sensor faultyCheck ECT sensor referring to “Engine
Coolant Temperature (ECT) Sensor Inspection
in Section 1C”.
Wiring or grounding faultyRepair circuit.
Combination meter faultyReplace combination meter.
ECM faultyReplace after making sure that none of above
parts is faulty.
Condition Possible cause Correction / Reference Item
Fuel meter shows no
operation or incorrect
operationCircuit fuse blownReplace fuse and check for short circuit.
Fuel level sensor faultyCheck fuel level sensor referring to “Fuel Level
Sensor Inspection”.
Wiring or grounding faultyRepair circuit.
Combination meter faultyReplace combination meter.
ECM faultyReplace after making sure that none of above
parts is faulty.

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Low Fuel Warning Light Symptom DiagnosisS6RW0D9304005
NOTE
• Confirm that fuel meter is in good condition before referring to the following possible causes.
• When fuel level sensor circuit is open or short, fuel level meter indicates empty even if fuel tank
does not empty.
• The low fuel warning light comes ON when fuel level is lower than specification below.

Low fuel warning light operation:
Oil Pressure Warning Light Symptom DiagnosisS6RW0D9304006
Low fuel warning light operation: Fuel amount: Resistance of fuel level sensor:
ON (2WD) Approx. 7.5 liter Approx. 261 Ω
ON (4WD) Approx. 6.8 liter Approx. 261 Ω
Condition Possible cause Correction / Reference Item
Low fuel warning light
does not come ON when
fuel level is lower than
specificationCircuit fuse blownReplace fuse and check for short circuit.
Fuel level sensor faultyCheck fuel level sensor referring to “Fuel Level
Sensor Inspection”.
Wiring or grounding faultyRepair circuit.
Combination meter faultyReplace combination meter.
ECM faultyReplace after making sure that none of above
parts is faulty.
Low fuel warning light
comes ON steadyLow fuelRefill fuel.
Fuel level sensor faultyCheck fuel level sensor referring to “Fuel Level
Sensor Inspection”.
Wiring or grounding faultyRepair circuit.
Combination meter faultyReplace combination meter.
ECM faultyReplace after making sure that none of above
parts is faulty.
Condition Possible cause Correction / Reference Item
Oil pressure warning light
does not light up when
ignition switch is turned
to ON position at engine
offCircuit fuse blownReplace fuse and check for short circuit.
Oil pressure switch faultyCheck oil pressure switch referring to “Oil
Pressure Switch Inspection”.
Wiring or grounding faultyRepair circuit.
Combination meter faultyReplace combination meter.
BCM faultyReplace after making sure that none of above
parts is faulty.
Oil pressure warning light
stays ONOil pressure switch faultyCheck oil pressure switch referring to “Oil
Pressure Switch Inspection”.
Wiring or grounding faultyRepair circuit.
Combination meter faultyReplace combination meter.
BCM faultyReplace after making sure that none of above
parts is faulty.

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Brake and Parking Brake Warning Light Symptom DiagnosisS6RW0D9304007
Seat Belt Reminder Light Symptom DiagnosisS6RW0D9304008
A/T Shift Position Indicator Symptom Diagnosis (A/T Model)S6RW0D9304009
Condition Possible cause Correction / Reference Item
Brake warning light does
not light up when brake
fluid level is low or
parking brake is pulled up
or for 5 seconds after
turning ON ignition switchCircuit fuse blownReplace fuse and check for short circuit.
Brake fluid level switch faultyCheck brake fluid level switch referring to
“Brake Fluid Level Switch Inspection”.
Parking brake switch faultyCheck parking brake switch referring to
“Parking Brake Switch Inspection”.
ABS system faultyRefer to “ABS Check in Section 4E”.
Wiring or grounding faultyRepair circuit.
Combination meter faultyReplace combination meter.
BCM faultyReplace after making sure that none of above
parts is faulty.
Brake warning light stays
ONBrake fluid level switch faultyCheck brake fluid level switch referring to
“Brake Fluid Level Switch Inspection”.
Parking brake switch faultyCheck parking brake switch referring to
“Parking Brake Switch Inspection”.
EBD system faultyRefer to “EBD Warning Light (Brake Warning
Light) Check in Section 4E”.
Wiring or grounding faultyRepair circuit.
Combination meter faultyReplace combination meter.
BCM faultyReplace after making sure that none of above
parts is faulty.
Condition Possible cause Correction / Reference Item
Seat belt reminder light
does not light upCircuit fuse blownReplace fuse and check for short circuit.
Seat belt switch faultyCheck seat belt switch referring to “Front Seat
Belt Inspection in Section 8A”.
Wiring or grounding faultyRepair circuit.
Combination meter faultyReplace combination meter.
BCM faultyReplace after making sure that none of above
parts is faulty.
Seat belt reminder light
stays ONSeat belt switch faultyCheck seat belt switch referring to “Front Seat
Belt Inspection in Section 8A”.
Wiring or grounding faultyRepair circuit.
Combination meter faultyReplace combination meter.
BCM faultyReplace after making sure that none of above
parts is faulty.
Condition Possible cause Correction / Reference Item
All A/T shift position
indicator does not light upCircuit fuse blownReplace fuse and check for short circuit.
Transmission range sensor (shift switch)
faultyCheck transmission range sensor referring to
“Transmission Range Sensor Inspection and
Adjustment in Section 5A”.
Wiring or ground faultyRepair circuit.
Combination meter faultyReplace combination meter.
TCM faultyReplace after making sure that none of above
parts is faulty.

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Charge Warning Light Symptom DiagnosisS6RW0D9304010
Main Beam (High Beam) Indicator Symptom DiagnosisS6RW0D9304011
Warning Buzzer Circuit Symptom DiagnosisS6RW0D9304012
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.

Condition Possible cause Correction / Reference Item
Charge warning light
does not come ONCircuit fuse blownReplace fuse and check for short circuit.
Wiring or grounding faultyRepair circuit.
Combination meter faultyReplace combination meter.
BCM faulty Replace after making sure that none of above
parts is faulty.
Charge warning light stay
ONCharging system faultyCheck charging system.
Wiring or grounding faultyRepair circuit.
Combination meter faultyReplace combination meter.
BCM faulty Replace after making sure that none of above
parts is faulty.
Condition Possible cause Correction / Reference Item
Main beam (high beam)
indicator does not come
ONCircuit fuse blownReplace fuse and check for short circuit.
Combination switch faultyCheck combination switch referring to
“Headlight Switch (in Lighting Switch)
Inspection in Section 9B”.
Wiring or grounding faultyRepair circuit.
Combination meter faultyReplace combination meter.
Main beam (high beam)
indicator stay ONCombination switch faultyCheck combination switch referring to
“Headlight Switch (in Lighting Switch)
Inspection in Section 9B”.
Wiring or grounding faultyRepair circuit.
Combination meter faultyReplace combination meter.
Condition Possible cause Correction / Reference Item
Warning buzzer shows no
soundingCircuit fuse blownReplace fuse and check for short circuit.
Driver side door switch faultyCheck driver side door switch referring to
“Door Switch (Front / Rear Door) Inspection”.
Lighting switch faultyCheck lighting switch referring to “Headlight
Switch (in Lighting Switch) Inspection in
Section 9B”.
Key reminder switch faultyCheck key reminder switch referring to
“Ignition Switch Inspection”.
Seat belt switch faultyCheck seat belt switch referring to “Front Seat
Belt Inspection in Section 8A”.
Wiring or grounding faultyRepair circuit.
BCM faultyReplace after making sure that none of above
parts is faulty.

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Cigarette Lighter Symptom Diagnosis (If Equipped)S6RW0D9304013
Horn Symptom DiagnosisS6RW0D9304014
Information Display Symptom Diagnosis (If Equipped)S6RW0D9304015
NOTE
This thermometer indicates the ambient temperature in the under side 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.
• Vehicle speed signal is faulty.
• The ignition switch is turned on again within 2 hours.

Condition Possible cause Correction / Reference Item
Cigarette lighter shows
no operationCircuit fuse blownReplace fuse and check for short circuit.
Cigarette lighter faultyCheck cigarette lighter.
Ignition switch faultyCheck ignition switch referring to “Ignition
Switch Inspection”.
Wiring or grounding faultyRepair circuit.
Condition Possible cause Correction / Reference Item
Horn does not operateCircuit fuse blownReplace fuse and check for short circuit.
Horn switch faultyCheck horn switch.
Horn relay faultyCheck horn relay referring to “Horn Relay
Inspection”.
Wiring or grounding faultyRepair circuit.
Horn faultyCheck horn referring to “Horn Inspection”.
Condition Possible cause Correction / Reference Item
No displaying of
information displayCircuit fuse BlownReplace fuse and check for short circuit.
Wiring or grounding faultyRepair circuit.
Information display unit faultyReplace unit.
Incorrect thermometer
displayOutside air temperature sensor faultyCheck outside air temperature sensor referring
to “Outside Air Temperature Sensor Inspection
(If Equipped)”.
Vehicle speed signal faultyCheck ECM for DTC referring to “DTC Check
in Section 1A”.
Wiring or grounding faultyRepair circuit.
Information display unit faultyReplace unit.
BCM faultyReplace after making sure that none of above
parts is faulty.
Display of thermometer
does not change at –30
°C
(–22
°F)Outside air temperature is –30 °C (–22
°F) or less—
Outside air temperature sensor faultyCheck outside air temperature sensor referring
to “Outside Air Temperature Sensor Inspection
(If Equipped)”.
Information display unit faultyReplace unit.
BCM faultyReplace after making sure that none of above
parts is faulty.

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Clock System Diagnosis (If Equipped)S6RW0D9304016
Display of thermometer
does not change at 50
°C
(122
°F)Outside air temperature is 50 °C (122
°F) or more—
Outside air temperature sensor faultyCheck outside air temperature sensor referring
to “Outside Air Temperature Sensor Inspection
(If Equipped)”.
Information display unit faultyReplace unit.
BCM faultyReplace after making sure that none of above
parts is faulty.
Display of thermometer
does not change at “- - -
°C (°F)”Outside air temperature sensor faultyCheck outside air temperature sensor referring
to “Outside Air Temperature Sensor Inspection
(If Equipped)”.
Outside air temperature sensor circuit is
open or shortRepair circuit.
Wiring or grounding faultyRepair circuit.
Information display unit faultyReplace unit.
BCM faultyReplace after making sure that none of above
parts is faulty.
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 faultyCheck ECM for DTC referring to “DTC Check
in Section 1A”.
Wiring or grounding faultyRepair circuit.
CAN communication data (information)
can not be received by BCMCheck BCM for DTC referring to “DTC Check
in Section 10B”.
Information display unit faultyReplace unit.
BCM faultyReplace 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 clockCircuit fuse blownReplace fuse and check for short circuit.
Wiring or grounding faultyRepair circuit.
Clock unit faultyReplace unit.

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Audio System Symptom Diagnosis (If Equipped)S6RW0D9304017
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.

CD PlayerCondition Possible cause Correction / Reference Item
Poor radio receptionOut of service area (Poor location)—
Antenna faultyReplace antenna.
Electrical part / system faultyRepair or replace electrical part / system
referring to after-mentioned NOTE.
Wiring or grounding faultyRepair circuit.
Radio assembly faultyReplace radio assembly.
Radio does not operate
and speaker does not
soundCircuit fuse(s) blownReplace fuse(s) and check for short circuit.
Wiring or grounding faultyRepair circuit.
Radio assembly faultyReplace radio assembly.
Radio does not operate,
but speaker soundWiring or grounding faultyRepair circuit.
Radio assembly faultyReplace radio assembly.
Radio is operative, but all
speakers does not soundWiring or grounding faultyRepair circuit.
Radio assembly faultyReplace radio assembly.
Individual speaker is
noisy or inoperativeWiring or grounding faultyRepair circuit.
Speaker faultyReplace speaker.
Radio assembly faultyReplace radio assembly.
Sound quality is poorOut of service area (Poor location)—
Speaker installed incorrectlyInstall correctly.
Wiring or grounding faultyRepair circuit.
Speaker faultyReplace speaker.
Radio assembly faultyReplace radio assembly.
Condition Possible cause Correction / Reference Item
CD-ROM does not insertAnother CD-ROM already insertedEject CD-ROM.
Circuit fuse blownReplace fuse and check for short circuit.
Wiring or grounding faultyRepair circuit.
Extraneous material come to be mixed
CD playerClear extraneous material from CD player or
replace radio assembly.
Radio assembly faultyReplace radio assembly.
CD-ROM does not ejectCircuit fuse blownReplace fuse and check for short circuit.
Wiring or grounding faultyRepair circuit.
Extraneous material come to be mixed
in CD playerClear extraneous material from CD player or
replace radio assembly.
Radio assembly faultyReplace radio assembly.
CD player does not load
CD-ROMCD-ROM faulty—
CD-ROM inserted with incorrect side upInsert correctly.
Temperature in cabin is too hot—
Water droplets form on internal lensDry about 1 hour with power on.
Radio assembly faultyReplace radio assembly.
Sound skips or is noisyCD-ROM faulty—
Driving vibration—
Water droplets form on internal lensDry about 1 hour with power on.
Radio assembly installed incorrectlyInstall correctly.
Radio assembly faultyReplace radio assembly.

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Auto Volume Control System
Remote Audio Control Switch Symptom Diagnosis (If Equipped)S6RW0D9304018
Navigation Symptom Diagnosis (If Equipped)S6RW0D9304019
CD player is operative,
but all speakers does not
soundWiring or grounding faultyRepair circuit.
Radio assembly faultyReplace radio assembly.
Individual speaker is
noisy or inoperativeWiring or grounding faultyRepair circuit.
Speaker faultyReplace speaker.
Radio assembly faultyReplace radio assembly.
Sound quality or volume
is poorCD-ROM faulty—
Wiring or grounding faultyRepair circuit.
Speaker installed incorrectlyInstall correctly.
Speaker faultyReplace speaker. Condition Possible cause Correction / Reference Item
Condition Possible cause Correction / Reference Item
Sound volume does not
vary according to
changes of vehicle speedAuto volume control system is “OFF”
modeSelect auto volume control.
Vehicle speed signal faultyCheck vehicle speed signal referring to
“Vehicle Speed Signal Inspection (For Audio
Unit) (If Equipped)”.
Wiring or grounding faultyRepair circuit.
BCM faultyCheck input and output signal of BCM referring
to “Inspection of BCM and Its Circuits in
Section 10B”.
Radio assembly faultyReplace radio assembly.
Condition Possible cause Correction / Reference Item
Audio system is
operative, but remote
control switch does not
control audio systemRemote audio control switch faultyCheck remote audio control switch referring to
“Remote Audio Control Switch Inspection (If
Equipped)”.
Contact coil faultyReplace contact coil.
Wiring or grounding faultyRepair circuit.
Radio assembly faultyReplace radio assembly.
Condition Possible cause Correction / Reference Item
No displaying of
navigationCircuit fuse BlownReplace fuse and check for short circuit.
Wiring or grounding faultyRepair circuit.
Navigation unit faultyReplace unit.