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Importance of cooling system maintenance for performance and longevity, including warnings.
Procedures for inspecting electrical connections, battery, wire harness, ignition coil, and spark plug wires.
Guidelines for inspecting and maintaining the LPG fuel system components.
Overview of LPG fuel system components: tank, regulator, throttle control, injectors, ECM, converter, HEGO.
Function and sensitivity of the HEGO sensor for measuring oxygen in exhaust gas.
Procedure outline for diagnosing LPG fuel system issues, including required tools.
Definition and checks for intermittent problems that may or may not trigger MIL or DTC.
Diagnostic steps for when the engine cranks but does not start.
Diagnosis for engines that crank but do not start for a long time or start and stall.
Introduction to the Diagnostic Scan Tool and its capabilities.
System requirements and instructions for installing the DST software.
Overview of DST functions: ECM calibration, graphical display, DTC display, data stream, plotting, recording.
How to read, view, clear, and save DTC codes using the DST.
Strategies for diagnosing intermittent fuel system and electrical problems using DST.
Step-by-step troubleshooting chart for ignition control system faults.
Conditions and circuit description for DTC 51 related to electronic throttle position sensors.
Conditions and circuit description for DTC 91 related to pedal position sensor voltages.
Conditions and circuit description for DTC 100 related to oil pressure sensor output.
Conditions and circuit description for DTC 105 related to manifold air temperature sensor.
Conditions and circuit description for DTC 106 related to manifold absolute pressure sensor.
Conditions and circuit description for DTC 110 related to engine coolant temperature sensor.
Conditions and circuit description for DTC 135 related to fuel rail pressure sensor.
Conditions and circuit description for DTC 168 related to system battery voltage monitoring.
Conditions and circuit description for DTC 628 related to ECM calibration memory.
Conditions and circuit description for DTC 630 related to ECM checksum error.
Conditions and circuit description for DTC 651 related to Injector 1 circuit faults.
Conditions and circuit description for DTC 652 related to Injector 2 circuit faults.
Conditions and circuit description for DTC 653 related to Injector 3 circuit faults.
Conditions and circuit description for DTC 654 related to Injector 4 circuit faults.
Conditions and circuit description for DTC 522630 related to O2 sensor switching.
Conditions and circuit description for DTC 522631 related to O2 sensor switching.
Conditions and circuit description for DTC 522635 related to short term fuel correction (lean).
Conditions and circuit description for DTC 522636 related to short term fuel correction (lean).
Conditions and circuit description for DTC 522690 related to CAN bus communication errors.
Conditions and circuit description for DTC 522691 related to ECM redundant check failure.
Conditions and circuit description for DTC 522692 related to ECM general conversion failure.
Conditions and circuit description for DTC 522694 related to ECM memory checksum error.
Conditions and circuit description for DTC 522695 related to ECM general conversion failure.
Conditions and circuit description for DTC 522698 related to ECM clock failure.
Conditions and circuit description for DTC 522699 related to ECM watchdog failure.
Conditions and circuit description for DTC 522700 related to ECM SDF timeout.
Conditions and circuit description for DTC 522710 related to electronic throttle position sensor 1 range.
Conditions and circuit description for DTC 522711 related to electronic throttle position sensor 1 range.
Conditions and circuit description for DTC 522712 related to pedal position sensor voltages.
Conditions and circuit description for DTC 522713 related to pedal position sensor voltages.
Conditions and circuit description for DTC 522735 related to HEGO heater element or control circuit.
Conditions and circuit description for DTC 522739 related to O2 sensor circuit monitoring.
Conditions and circuit description for DTC 522752 related to camshaft position sensor signal.
Conditions and circuit description for DTC 523821 related to oil pressure switch circuit.
Conditions and circuit description for DTC 524260 related to 5V power supply 1 range.
Conditions and circuit description for DTC 524261 related to 5V power supply 2 range.
Conditions and circuit description for DTC 524266 related to electronic throttle position sensor.
Conditions and circuit description for DTC 524286 related to electronic throttle position sensor.
Procedure for removal and installation of the ECM.
Cautionary procedures for relieving LPG fuel system pressure before servicing.
Guide provides labor times for IMPCO Technologies Engine Systems Division fuel systems.
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General