Engine General Information and Diagnosis: Bi-Fuel LPG model 1A-8
Fail safe control
When LPG control module fails to control, operating
mode is switched to “Petrol MODE” automatically and
LPG warning light blinks.
LPG Pressure-and-Temperature Sensor
LPG pressure-and-temperature sensor detects LPG fuel
pressure and LPG temperature in LPG fuel delivery pipe.
Shut Off Valve of LPG Pressure Regulator
Shut off valve installed in LPG pressure regulator is
opened or closed by LPG control module to supply or
shut off LPG fuel to LPG fuel delivery pipe. For details,
refer to “LPG Pressure Regulator Description”: LPG in
Section 1G.
Shut Off Valve of LPG tank Valve
Shut off valve installed in LPG tank valve is opened or
closed by LPG control module to supply or shut off LPG
fuel to LPG fuel lines. For details, refer to “LPG Tank
Description”: LPG in Section 1G.
Fuel Select Switch
Fuel select switch, which is installed on instrument
panel, outputs on / off signal to LPG control module to
select operating mode among three modes. Selected
operating mode and remaining LPG are indicated by the
indicator built-in this switch. For details, refer to “Selector
Switch Description (Bi-Fuel LPG Model)”: in Section 9C.
Electronic Control System Description
AENAR90A1101011
The electronic control system consists of various
sensors, switches, ECUs which detect the state of
engine and driving conditions, ECM and LPG control
module which controls various electric control devices
according to the signals from various sensors and
various electric control devices.
Electronic control system performs the following
controls:
ECM
• Fuel injection control
• Ignition control
• Fuel pump control
• Radiator cooling fan control
• Evaporative emission control
• HO2S heater control
• A/C control
• Immobilizer control
• Generator control
• Controller (computer) communication
LPG Control Module
• Fuel select control
• Petrol injection control
• LPG injection control
• LPG shut off valve control
• Controller (computer) communication
Especially, ECM, LPG control module and combination
meter intercommunicate by means of CAN
communication.
Refer to “Engine and Emission Control System Flow
Diagram”: Bi-Fuel LPG model and “Engine Control
System Circuit Diagram”: Bi-Fuel LPG model.
Engine and Emission Control Input / Output Table
AENAR90A1101013
ECM
Function
Output
Input
Injection control
LPG control module
• Ignition switch
• Starter switch
• ECT sensor
• CKP sensor
• CMP sensor
• TP sensor
• MAP sensor
• IAT sensor
• HO2S
• Battery voltage
• Brake light switch
• VSS
• LPG control module
Immobilizer control
LPG control module
• Ignition switch
• Immobilizer control module
Ignition coil assembly
Summary of Contents for Wagon R
Page 2: ......
Page 32: ...0B 5 Maintenance and Lubrication ...
Page 184: ...1J 3 Charging System ...