Suzuki SWIFT RS415 2017, Руководство по обслуживанию

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Engine General Information and Diagnosis: 1A-51
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, on a level road.
NOTE:
Check to make sure that the following conditions are satisfied when using this “DTC Confirmation
Procedure”.
• Intake air temperature at engine start: -10
q
C (14
q
F) to 80
q
C (176
q
F)
• Intake air temperature: –10
q
C (14
q
F) to 70
q
C (158
q
F)
• Engine coolant temperature: 70
q
C (158
q
F) to 150
q
C (302
q
F)
• Altitude (barometric pressure): 2400 m, 8000 ft or less (560 mmHg, 75 kPa or more)
1) With ignition switch turned OFF, connect scan tool.
2) Turn ON ignition switch and clear DTC using scan tool.
3) Start engine and warm up to normal operating temperature. (ECT approx. 90 – 95
q
C, 194 – 203
q
F)
4) Drive vehicle with engine speed: more than 2500 rpm for 1 min.
5) Increase vehicle speed to 80 km/h (45 mile/h) at 5th gear or D range.
6) Release accelerator pedal to decrease vehicle speed to 40 km/h (25 mile/h).
7) Stop vehicle and run it idle for 1 min.
8) Check DTC and pending DTC.
DTC Troubleshooting
NOTE:
• Before performed trouble shooting, be sure to read the “Precautions of ECM Circuit Inspection: ”.
• When measuring circuit voltage, resistance and/or pulse signal at ECM connector, connect the
special tool to ECM and/or the ECM connectors referring to “Inspection of ECM and Its Circuits: ”.
• Upon completion of inspection and repair work, perform “DTC Confirmation Procedure” and
confirm that the trouble has been corrected.
DTC detecting condition Trouble area
• MAF volume is greater than 20 g/sec even if engine
revolution is less than 900 rpm and intake manifold
pressure is less than 40 kPa (5.80 psi) with TP less than
1.5
q
.
• MAF volume is lower than 10 g/sec even if engine
revolution is more than 2500 rpm and intake manifold
pressure is more than 60 kPa (8.70 psi) with TP more than
12
q
.
(2 driving cycle detection logic)
• Air intake system (clog or leakage)
• MAF sensor and/or its circuit
• TP sensor and/or its circuit
• MAP sensor and/or its circuit
• ECM