Tools And Equipment

The DISplus/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.

Fig 1: Identifying Tools And Equipment

The correct Universal Adapter for the MS42/ MS43 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 below the windshield on the passenger side of the engine compartment), make sure the ignition is switched off.

NOTE: NOTE for MS43: Allow at least 3 minutes to elapse after the key was set to the "OFF" position before disconnecting the ECM/TCM. This will allow sufficient time to complete the DM TL test. Voltage may be present (up to 3 minutes) causing damage to the ECM/TCM if they are disconnected during this time period (arcing).

Fig 2: Identifying SKE Breakout Box Set

When checking the fuel tank and ventilation system for leak-tightness use Special Tool Set #90 88 6 161 170 which includes all of the pieces.

Pressure Control Valve

Quick Coupling Adapters

This set is used in conjunction with shop supplied compressed air and the DISplus/Multimeter function for reading the pressure bleed off.

Fig 3: Identifying Quick Coupling Adapters

This Special Tool Set #90 88 6 161 160 will also be required to "cap off" the air filter and Evaporative Emission Valve hose when performing the Leakage Diagnosis Test.

Fig 4: Identifying Special Tool

If the test indicates excessive bleed off an ultrasonic leak detector should be used to check for leaks at:

Fuel Filler Cap and Filler Neck
Fual Tank Ventilation Lines
Evaporative Emission Valve
Fuel Tank and Fuel Sending Unit
Liquid/Vapor Separator