Tools and Equipment
The DIS/MoDIC as well as a reputable hand held multimeter can be used when testing inputs/components.
It is best to make the checks at the ECM connection, this method includes testing the wiring harness.
The correct Universal Adapter for the MS S54 application should be used (#90 88 6 121 300). This will ensure the pin connectors and the harness will not be damaged.
When installing the Universal Adapter to the ECM (located in the Electronics Box in the engine compartment), make sure the ignition is switched off.
When checking the fuel tank and ventilation system for leak-tightness use Special Tool Set #90 88 6 161 170.
1. Pressure Control Valve
2. 3. Quick Coupling Adapters
This set is used in conjunction with shop supplied compressed air and the DIS Multimeter function for reading the pressure bleed off.
This Special Tool Set #90 88 6 161 160 will also be required to "cap off" the DM TL air filter and Evaporative Emission Valve hose when performing the Leakage Diagnosis Test.
If the test indicates excessive bleed off a leak detector should be used to check for leaks at:
- Fuel Filler Cap and Filler Neck
- Fuel Tank Ventilation Lines
- Evaporative Emission Valve
- Fuel Tank and Fuel Sending Unit
- Liquid/Vapor Separator