Diagnostic Starting Point - Engine Controls Petrol
Begin the system diagnosis with
Diagnostic System Check - Vehicle. The Diagnostic System
Check - Vehicle will provide the following information:
| • | The identification of the Control Modules which command the system. |
| • | The ability of the Control Modules to communicate through the serial data
circuit. |
| • | The identification of any stored DTCs and the codes status. |
The use of the Diagnostic System Check - Vehicle will identify the correct
procedure for diagnosing the system and where the procedure is located.
Diagnostic Starting Point - Engine Controls LPG
Important: The following steps must be completed before using the symptom tables.
- Perform the
Diagnostic System Check - Vehicle
| • | The identification of the control modules which command the system. |
| • | The ability of the control modules to communicate through the serial data circuit. |
| • | The identification of any stored diagnostic trouble codes (DTCs) and their status. |
- The use of the Diagnostic System Check - Vehicle will identify the correct procedure for diagnosing the system and where the procedure is located.
Review the system operation in order to familiarize yourself with the system functions.
Refer to
Liquefied Petroleum Gas System Description and Operation.
Visual/Physical Inspection
| • | Inspect for aftermarket devices which could affect the operation of the LPG System. |
| • | Inspect the easily accessible or visible system components for obvious damage or conditions which could cause the symptom. |
Intermittent
Faulty electrical connections or wiring may be the cause of intermittent conditions. Refer to
Testing for Intermittent Conditions and Poor Connections.
Symptom List
Refer to a symptom diagnostic procedure from the following list in order to diagnose the symptom:
