Ford Ranger EV. Electric Manual - part 48

LESSON 5: DIAGNOSIS

5-33

ACTIVITY 9 – DIAGNOSIS – WORKSHEET O

POWER STEERING DIAGNOSIS

STUDENT ANSWER SHEET

OBJECTIVE:

The student will safely and accurately diagnose a Ranger EV concern.

DIRECTIONS:

Go to the workstation designated by your instructor. Read the repair order, then using the

Ranger EV service publications, perform the tasks and answer the questions below.

1. What is the customer concern listed on the repair order? _________________________________________

______________________________________________________________________________________

2. What section of the service publication should you refer to first? __________________________________

______________________________________________________________________________________

3. Can you verify this concern? _______________________________________________________________

______________________________________________________________________________________

4. When performing your visual inspection can you see any obvious reason for this concern? ______________

______________________________________________________________________________________

5. Are any DTCs present having to do with this concern? __________________________________________

______________________________________________________________________________________

6A. If a DTC is present, what service publication section are you directed to? ___________________________

______________________________________________________________________________________

6B. If no DTC is present, what service publication section are you directed to? __________________________

______________________________________________________________________________________

7. When turning to this section, what chart should you refer to for diagnostic direction? __________________

______________________________________________________________________________________

8. What series of pinpoint tests are you directed to perform? ________________________________________

______________________________________________________________________________________

WORKSHEET O CONTINUED ON NEXT PAGE

LESSON 5: DIAGNOSIS

5-34

9. Diagnose this concern using the procedures in the service publications. List the test steps you perform and

their results in the table below. (NOTE: The number of rows in the table do not indicate the number of steps

in the procedure. Use the back of the sheet if required.) FOLLOW ALL WARNINGS IN THE SERVICE

PUBLICATION DURING YOUR DIAGNOSIS.

DIAGNOSTIC TEST STEP

RESULTS

A1

YES

A2

YES

A6

YES

A7

NO

A8

NO

A10

YES

A11

YES

A12

NO

A13

YES

A14

NO

A15

NO

A16

YES

A17

NO SYSTEM OK

ACTIVITY 9 – DIAGNOSIS – WORKSHEET O

POWER STEERING DIAGNOSIS

STUDENT ANSWER SHEET (Continued)

END OF WORKSHEET O

LESSON 5: DIAGNOSIS

5-35

ACTIVITY 9 – DIAGNOSIS – WORKSHEET P

AIR CONDITIONING DIAGNOSIS

STUDENT ANSWER SHEET

OBJECTIVE:

The student will safely and accurately diagnose a Ranger EV concern.

DIRECTIONS:

Go to the workstation designated by your instructor. Read the repair order, then using the

Ranger EV service publications, perform the tasks and answer the questions below.

1. What customer concern is listed on this repair order? ___________________________________________

______________________________________________________________________________________

2. List the preliminary diagnostic steps that you performed (NOTE: assume on the road test that the concern is

occurring as described by the customer.) _____________________________________________________

______________________________________________________________________________________

3. Are any DTCs present? ___________________________________________________________________

4. What SYSTEM(S) is affected by this fault? ___________________________________________________

5. Where does this system receive its high voltage power? _________________________________________

______________________________________________________________________________________

6. What workshop manual section would you refer to for diagnostic direction? _________________________

7. What is the next workshop manual section to which you are directed? ______________________________

______________________________________________________________________________________

8. While performing diagnostic tests, what personal safety procedures should always be performed? ________

______________________________________________________________________________________

9. List the test steps that you perform and their results below. (NOTE: The number of rows in the table do not

indicate the number of steps in the procedure. Use the back of the sheet if required.) Follow all warnings in

the service publication during your diagnosis.

DIAGNOSTIC TEST STEP

RESULT

PPT D1

NO

PPT D3

YES

D7

YES

D14

YES

D15

NO

D16

YES REPLACE FUSE

D17

NO

D18

NO

D19

YES

D20

NO SYSTEM

LESSON 5: DIAGNOSIS

5-36

ELECTRIC MOTOR/TRANSAXLE DIAGNOSIS

Electric Motor/Transaxle

The Ranger EV uses a three-phase 90-hp electric motor with an

integrated planetary gear transmission. The unit is not field

serviceable, and is only serviced as an assembly.

To determine if a component of the motor/transaxle assembly is the

source of a concern, Ford has developed the Electric Motor/

Transaxle Test Box.

This tool can test:

•

motor speed sensor operation.

•

motor temperature sensor operation.

•

oil pressure sensor operation.

•

oil pump operation.

Refer to the appropriate pinpoint tests for Electric Motor/

Transaxle Test Box diagnostic procedures.