2-13. STE/ICE VEHICLE SYSTEM DIAGNOSTIC CHECK.
General. This section lists tests which may be used with STE/ICE (Simplified Test Equipment for Internal
Combustion Engines) to locate malfunctions that can occur in the vehicle. The listed tests can be used during
troubleshooting, corrective maintenance, and after routine adjustments.
The STE/ICE system is primarily used in conjunction with the vehicle electrical system. The listed tests cannot
cover all possible malfunctions that may occur. If a particular malfunction is not discussed, refer to the troubleshooting
Description and Operation. STE/ICE (Figure 2-1) is portable and operates off of the vehicles 24 volt system.
Refer to STE/ICE manual for detailed operating instructions. The STE/ICE kit consists of the following major components:
Vehicle Test Meter (VTM). The VTM is a tool for testing electrical and mechanical components. Readings
are either pass/fail or digital display (PSI, RPM, volts, etc.). The VTM interfaces with the vehicle being
tested by either a transducer from the Transducer Kit (TK) or by the Diagnostic Connector Assembly (DCA).
Power from the VTM is drawn from the vehicle batteries or from an alternate power source.
Transducer Kit (TK). The TK is a covered tray inside the transit case that contains transducers, fittings, and
connectors which are used during testing.
Electrical Cable Assemblies. The cable assemblies are included for power and testing. Test procedures
refer to the cable assemblies by number for quick identification. Each cable also has a name which
describes its use. A quick reference to W1, for example, would indicated the DCA cable. Connectors on
the cable are identified by a number proceeded by either a P or E, such as P1 or E2. Cable assembly
numbers and names are listed below.
W1 DCA Cable
W2 Test Probe Cable
W3 Ignition Adapter Cable
W4 Transducer Cable (2 each)
W5 Power Cable
When cables are connected, large key noted by white stripe on cable connector mates with
large keyway of connector on VTM transducer.
Vehicle Diagnostic Connector Assembly (DCA). The DCA connector of the vehicle is located on the transmission
right side panel (Figure 2-2).
STE/ICE Testing Procedures. The vehicle test procedures contained in the STE/ICE Technical Manual consist
of two test sequences; GO-Chain sequences and NO-GO-Chain sequences. A GO-Chain sequence is a logical sequence
of tests preformed to determine the general condition of the vehicle. If the vehicle fails any of the GO-Chain tests, the test
will direct the user to a specific NO-GO test for further testing. The NO-GO tests are used to isolate what is wrong with the