Diagnosis and repair workflow
Work Flow
Detailed flow
1.Interview from the customer
Clarify customer complaints before inspection. First of all, perform an interview utilizing stc-20, "diagnostic work sheet" and reproduce symptoms as well as fully understand it. Ask customer about his/her complaints carefully. Check symptoms by driving vehicle with customer, if necessary.
Caution:
Customers are not professional. Never guess easily like “maybe the customer means that...,” Or “maybe the customer mentions this symptom”.
>> Go to 2.
2.Check symptom
Reproduce the symptom that is indicated by the customer, based on the information from the customer obtained by interview. Also check that the symptom is not caused by protection function. Refer to STC-13, "Protection Function".
Caution:
When the symptom is caused by normal operation, fully inspect each portion and obtain the understanding of customer that the symptom is not caused by a malfunction.
>> Go to 3.
3.Perform self-diagnosis
With consult
Perform self-diagnosis.
Is any dtc detected? Yes >> record or print dtc and freeze frame data (ffd). Go to 4.
No >> go to 6.
4.Recheck symptom
With consult
Erase self-diagnostic results.
Perform dtc confirmation procedures for the malfunctioning system.
Note:
If some DTCs are detected at the same time, determine the order for performing the diagnosis based on STC- 14, "DTC Inspection Priority Chart".
Is any dtc detected? Yes >> go to 5.
No >> check harness and connectors based on the information obtained by interview. Refer to gi-39, "intermittent incident".
5.Repair or replace malfunctioning parts
Repair or replace malfunctioning parts
Reconnect part or connector after repairing or replacing.
When dtc is detected, erase self-diagnostic results for “eps”.
>> Go to 7.
6.Identify malfunctioning system by symptom diagnosis
Estimate malfunctioning system based on symptom diagnosis and perform inspection.
Can the malfunctioning system be identified?
Yes >> go to 7.
No >> check harness and connectors based on the information obtained by interview. Refer to gi-39, "intermittent incident".
7.Final check
With consult
Check the reference value for eps control unit.
Recheck the symptom and check that symptom is not reproduced on the same conditions.
Is the symptom reproduced? YES >> GO TO 3.
NO >> Inspection End.
Diagnostic Work Sheet
Description
In general, customers have their own criteria for a problem. Therefore, it is important to understand the symptom and status well enough by asking the customer about his/her concerns carefully. To systemize all the information for the diagnosis, prepare the interview sheet referring to the interview points.
In some cases, multiple conditions that appear simultaneously may cause a dtc to be detected.
Interview sheet sample
Optical sensor
Description
The optical sensor measures ambient light and transmits the optical sensor
signal to the bcm.
Component function check
1.Check optical sensor signal by consult
Consult
Turn the ignition switch ON.
Select opti sen of bcm (head lamp) data monitor item.
Turn the lighting swit ...
Od off indicator lamp
Component Function Check
1.CHECK OD OFF INDICATOR LAMP FUNCTION
Check OD OFF indicator lamp turns ON for approx. 2 seconds when ignition
switch turns ON.
Is the inspection result normal?
YES >> INSPECTION END
NO >> Go to TM-239, "Diagnosis Procedure".
Diagnosis Proce ...
Front regulator
Exploded View
Front door panel
Front door glass channel front
Front door glass regulator
Front door glass regulator motor
Front door glass channel rear
Front door glass
Front door glass rubber run
Removal and Installation
REMOVAL
WARNING:
Before servicing, turn ignition ...