Introduction To Ranger Ev Diagnosis And Service Procedures; Symptom-To-System-To-Component-To-Cause Diagnosis - Ford Electric Ranger 1998 Student Manual

LESSON 5: DIAGNOSIS
5-2
INTRODUCTION TO RANGER EV DIAGNOSIS AND
SERVICE PROCEDURES
As you have seen, the 1998 Ranger EV is unique in many ways from
previous vehicles that you have seen. The differences in this vehicle
mean that the diagnosis and service procedures are also unique.
Ford's service goal for all vehicles is to "Fix it Right the First Time,
On Time." This goal also applies to the Ranger EV.
Although the 1998 Ranger EV is a completely new vehicle, service
procedures for some of its systems are similar to those with which you
are familiar. However, many systems on this vehicle are unique.
These systems require service procedures that will be completely new
to you. This portion of this course will show you the most accurate
and efficient methods of performing vehicle diagnosis and service.
SYMPTOM-TO-SYSTEM-TO-COMPONENT-TO-CAUSE
DIAGNOSIS
When diagnosing an automotive system, you should always follow
standard procedures to locate clues to the cause of a concern. Using
these clues, you can then determine what component(s) must be
repaired or replaced in order to correct a concern. These clues can
usually be found by using a logical, time-effective method. The
"Symptom-to-System-to-Component-to-Cause" diagnostic technique
is very effective in locating and correcting vehicle concerns.
To use the "Symptom-to-System-to-Component-to-Cause" diagnostic
routine, all you have to do is follow the words in the title.
•
First, determine the "Symptom" of the customer concern.
– Ensure you understand the customer concern.
•
Next, determine which "System" on the vehicle could be causing
the symptom.
– By eliminating systems that cannot cause the concern, time is
saved by testing only systems that could cause the concern.
– For example, there's not much sense in checking the air pressure
of the tires if the vehicle has no power.
1998 Ranger EV New Model Training