Operation CHARM
: Car repair manuals for everyone.
Home
>>
Mercury Truck
>>
1995
>>
Villager V6-181 3.0L SOHC
>>
Repair and Diagnosis
>>
Powertrain Management
>>
Computers and Control Systems
>>
Testing and Inspection
>>
Scan Tool Testing and Procedures
>>
Diagnostics
>>
NGS Scan Tool Test Modes and Descriptions
>>
Key on Engine Off (KOEO) Tests
>>
Start Signal Tests
Start Signal Tests
START SIGNAL TESTS - (KOEO)
Description:
1.
Technician cranks the engine.
2.
NGS Tester disables the injectors then re-enables them.
Results: Test fails if Vehicle Start (VST) is
ON
before cranking or
OFF
during cranking.