Suzuki 2006 SX4, Service Manual

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Engine General Information and Diagnosis: 1A-105
DTC Detecting Condition and Trouble Area
DTC Confirmation Procedure
WARNING
!
• When performing a road test, select a place where there is no traffic or possibility of a traffic
accident and be very careful during testing to avoid occurrence of an accident.
• Road test should be carried out by 2 persons, a driver and a tester.
1) With ignition switch turned OFF, connect scan tool to DLC.
2) Turn ON ignition switch and clear DTC.
3) Start engine and warm up to normal operating temperature. (ECT approx. 90 – 95
°
C, 194 – 203
°
F)
4) Drive vehicle at 50 km/h (80 mph) or higher for 3 min. or more.
5) Stop vehicle.
6) Depress brake pedal for 3 times.
7) Check DTC.
DTC Troubleshooting
DTC detecting condition Trouble area
If either of the following condition is fulfilled:
• Brake pedal switch signal (ON) and brake light switch
signal (ON) are detected at a time.
• Brake pedal switch signal (OFF) and brake light switch
signal (OFF) are detected at a time.
(1 driving cycle detection logic but MIL does not light up)
• Brake light switch and/or its circuit
• Brake pedal switch and/or its circuit
• ECM
Step Action Yes No
1 Was “Engine and Emission Control System Check”
performed? Go to Step 2. Go to “Engine and
Emission Control
System Check”.
2 Brake switch check
1) Check brake switch referring to “Brake Light Switch
Inspection in Section 9B”.
Is it in good condition?
Go to Step 3. Replace brake switch.
3 Brake switch power circuit check
1) Disconnect connector from brake switch connector with
ignition switch turned OFF.
2) Check for proper connection to brake switch connector.
3) If connections are OK, check that circuit voltage
between “Power supply circuit of brake pedal switch” or
“Power supply circuit of brake light switch” and vehicle
body ground is battery voltage with ignition switch turned
ON.
Are they in good condition?
Go to Step 4. Check related fuse and
repair defective circuit.