Test AC: No Start - ALT Fuel Switch Indicator is On Then Off

AC1:

AC2 - AC5:

AC6 - AC8:

AC9 - AC14:

AC15 - AC21:

This pinpoint test is intended to diagnose only the following:
- Solenoid tank valve/lockoff solenoid
- Alternative fuel lines and filters
- Compuvalve

NOTE:
- This condition may be mistaken as an auto switch to gasoline mode condition.
- Be sure any manual shut off valves (1/4 turn valves) and manual tank valves are open (if equipped).
- Verify the LPG fuel level using the fuel gauge mounted to the LPG tank(s) (if equipped) before continuing diagnostics.
- If the vehicle is equipped with a dual LPG tank option, be sure to check ALT operation in both LPG positions of the ALT/GAS switch.