Student Answer Sheet - Ford Electric Ranger 1998 Student Manual

OBJECTIVE: This is a demonstration of the correct safety and diagnostic procedures to follow when diag-
nosing a vehicle with a PTC heater concern. It will also show correct safety procedures to
follow when diagnosing HV components that are connected to the HVPDB.
DIRECTIONS: As the diagnostic procedure is performed, monitor the procedure and answer the questions
below. Ask questions of the instructor as he performs this demonstration for any points that
you may have questions about.
1. What is the customer concern? _____________________________________________________________
______________________________________________________________________________________
2. What is the first section of the workshop manual that should be referenced to diagnose this system? ______
______________________________________________________________________________________
3. List the preliminary steps that are performed.
PRELIMINARY DIAGNOSTIC STEPS
VERIFY CONCERN
PERFORM VISUAL INSPECTION
CHECK FOR NON-FACTORY
INSTALLED EQUIPMENT
RETRIEVE DTCS
(REVIEW DTC RETRIEVAL PROCEDURE)
GO TO DTC INDEX
DIRECTION
4. List the diagnostic steps performed and their results.
IRQ
: PTC Heater Core operation is dependent on ambient temperature. Ambient temperature sensor under
hood provides input to determine if one or both cores need to be turned on. Above 40°F, one core on; below
40°F, two cores on. Cores take turns coming on with each key cycle. Turn the key on at least twice with the heater
on to ensure that both heaters have been actuated.
DIAGNOSTIC TEST STEP
E1
E2
E3
1998 Ranger EV New Model Training
ACTIVITY 8 – DIAGNOSIS – WORKSHEET N
PTC HEATER DIAGNOSIS DEMONSTRATION

STUDENT ANSWER SHEET

END OF WORKSHEET N
LESSON 5: DIAGNOSIS
RESULTS
CONCERNED VERIFIED
NO PROBLEMS SEEN
NONE INSTALLED
DTC 1776 PRESENT IN IAA
GO TO SECTION 414-O2 FOR DIAGNOSTIC
RESULT
NO
NO
NO, REPLACE HEATER CORE
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