Ford Electric Ranger 1998 Student Manual page 174

LESSON 5: DIAGNOSIS
5-10
Parameter Identification Data (PID) Monitor and
Record
This menu will allow you to monitor and record the operation of
many of the vehicle's components.
•
Since there are so many PIDs available, there is also a definition
(DEFN) function that will tell you the meaning of the acronym
used to identify the component/function.
•
Use of PIDs is critical when diagnosing the Ranger EV. If you are
unfamiliar with the operation and utilization of the PID menu, refer
to the New Generation STAR Tester Reference Guide.
•
The PID Indices in Section 100-07 of the workshop manual
supplement will provide you with PID descriptions and expected
values.
Active Command Mode
The Active Command Modes menu of the NGS will enable you to
activate certain components of a vehicle system using the NGS to test
the function. This can save time by determining if the source of the
problem is in the component, or in the signaling system that activates it.
•
For example, the Central Timing Unit Active Command Menu
allows you to command on the windshield wiper.
•
If the NGS can activate the wiper, the problem is likely in the wiper
switch or circuits. If not, the wiper motor may need repair.
•
As with PIDs, each module will have its own list of components
that can be commanded in this menu.
There is an active command function for the Ranger EV standard
corporate protocol (SCP) networked modules (IAA, BCM, and TIM)
called "packeted" commands.
•
This function allows the SCP modules to send more than one active
command at the same time.
•
This allows the NGS to enable multiple high voltage components
simultaneously (A/C, IMC, power steering controller assembly,
PTC, contactor box relays, etc.)
•
In some cases it is required to use a packeted command series in
order to activate a component.
– For example, in order to activate the main contactor using the
active command, you must first close the precharge contactor, or
the NGS will not be able to perform the operation.
1998 Ranger EV New Model Training