Suzuki SQ416 Service Manual page 29

6-1-4 ENGINE GENERAL INFORMATION AND DIAGNOSIS (H25 ENGINE)
DTC
DETECTING ITEM
NO.
Exhaust gas recirculation
P0400
flow malfunction detected
Catalyst system efficiency
P0420
below threshold (Bank 1)
Catalyst system efficiency
P0430
below threshold (Bank 2)
Purge control valve circuit
P0443
malfunction
P0460 Fuel level sensor high input
P0500 Vehicle speed sensor
(No.24) malfunction
Idle control system
P0505
malfunction
P0601 Internal control module
(No.71) memory check sum error
Manifold absolute
P1408 pressure sensor circuit
malfunction
Barometric pressure sensor
P1450
circuit malfunction
Barometric pressure sensor
P1451
performance problem
Starter signal circuit
P1500
malfunction
ECM backup power source
P1510
malfunction
DETECTING CONDITION
(DTC will set when detecting:)
Excessive or insufficient EGR flow.
Output waveforms of HO2S-1 and
HO2S-2 are similar.
(Time from output voltage change of
HO2S-1 to that of HO2S-2 is shorter than
specification.)
Output waveforms of HO2S-1 and
HO2S-2 are similar.
(Time from output voltage change of
HO2S-1 to that of HO2S-2 is shorter than
specification.)
Purge control valve circuit is open or
shorted to ground.
Fuel level sensor circuit open
(high voltage).
No signal while running in "D" range or
during fuel cut at decelerating.
No closed signal to IAC valve is detected.
Data write error (or check sum error)
when written into ECM
Manifold absolute pressure sensor output
voltage is higher or lower than specified
value (or sensor circuit shorted to ground
or open).
Barometric pressure is lower or higher
than specification (or sensor
malfunction).
Difference between manifold absolute
pressure (MAP sensor value) and
barometric pressure (barometric
pressure sensor value) is larger than
specification during cranking.
Starter signal is not inputted from engine
cranking till its start and after or it is always
inputted.
No backup power after starting engine.
MIL MIL
(vehicle (vehicle
without with
monitor monitor
connector connector
2 driving Not
cycles applicable
2 driving Not
cycles applicable
2 driving Not
cycles applicable
2 driving Not
cycles applicable
2 driving Not
cycles applicable
1 driving 1 driving
cycle cycle
2 driving 1 driving
cycles cycle
1 driving Not
cycle applicable
2 driving Not
cycles applicable
1 driving 1 driving
cycle cycle
2 driving Not
cycles applicable
2 driving Not
cycles applicable
1 driving Not
cycle applicable