Engine General Information and Diagnosis: Bi-Fuel LPG model 1A-24
LPG Control Module
1) With ignition switch turned OFF, connect SUZUKI
scan tool to DLC.
2) Turn ignition switch to ON position.
3) Erase DTC and pending DTC according to
instructions displayed on scan tool. Freeze frame
data is cleared together with DTC. Refer to scan tool
operator’s manual for details.
If communication between scan tool and LPG control
module is not possible, go to “Troubleshooting for
Communication Bus Off”: in Section 10H.
4) After completing the clearance, turn OFF ignition
switch and disconnect scan tool from DLC.
NOTE
DTC and freeze frame data stored in LPG
control module memory are also cleared in
the following cases. Be careful not to clear
them before recording them.
• When the same malfunction (DTC) is not
detected again during 40 engine warm-up
cycles (refer to Warm-Up Cycle of “OBD
System Description”: Bi-Fuel LPG model.
DTC Table
AENAR90A1104006
ECM
DTC
DTC name
DTC detecting condition
DTC
detection
logic
MIL
P0031
)
HO2S Heater Control Circuit
Low
Voltage of HO2S heater circuit is lower than
specification for more than 5 sec. even though
control duty of HO2S heater is lower than 75% with
engine running.
(Heater control duty pulse is not detected in its
circuit of ECM)
2 D/C
Applicable
P0032
)
HO2S Heater Control Circuit
High
Voltage of HO2S heater circuit is higher than
specification for more than 5 sec. even though
control duty of HO2S heater is higher than 25%
with engine running.
(Heater control duty pulse is not detected in its
circuit of ECM)
2 D/C
Applicable
P0107
)
Manifold Absolute Pressure /
Barometric Pressure Circuit
Low
Voltage of MAP sensor signal circuit is lower than
0.3 V for 5 sec.
2 D/C
Applicable
P0108
)
Manifold Absolute Pressure /
Barometric Pressure Circuit
High
Voltage of MAP sensor signal circuit is higher than
4.88 V for 5 sec.
2 D/C
Applicable
P0112
)
Intake Air Temperature
Sensor1 Circuit Low
Voltage of IAT sensor signal circuit is lower than
0.15 V for 5 sec.
2 D/C
Applicable
P0113
)
Intake Air Temperature
Sensor1 Circuit High
Voltage of IAT sensor signal circuit is higher than
4.85 V for 5 sec.
2 D/C
Applicable
P0117
)
Engine Coolant Temperature
Sensor1 Circuit Low
Voltage of ECT sensor signal circuit is lower than
0.15 V for 5 sec.
2 D/C
Applicable
P0118
)
Engine Coolant Temperature
Sensor1 Circuit High
Voltage of ECT sensor signal circuit is higher than
4.85 V for 5 sec.
2 D/C
Applicable
P0122
)
Throttle / Pedal Position
Sensor / Switch “A” Circuit Low
Voltage of TP sensor signal circuit is lower than 0.1
V for 5 sec.
2 D/C
Applicable
P0123
)
Throttle / Pedal Position
Sensor / Switch “A” Circuit
High
Voltage of TP sensor signal circuit is higher than
4.7 V for 5 sec.
2 D/C
Applicable
P0130
)
O2 Sensor Circuit
Any of the following conditions is met.
• Circuit voltage of HO2S is lower than 0.3 V for
more than specified time with engine running.
• Circuit voltage of HO2S is higher than 0.6 V for
more than specified time with engine running.
2 D/C
Applicable
P0327
)
Knock Sensor1 Circuit Low
Voltage of knock sensor signal circuit is lower than
1.23 V for 5 sec.
2 D/C
Applicable
P0328
)
Knock Sensor1 Circuit High
Voltage of knock sensor signal circuit is higher than
3.91 V for 5 sec.
2 D/C
Applicable
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