Diagnosis and repair workflow
Work flow
OVERALL SEQUENCE
DETAILED FLOW
1.GET INFORMATION FOR SYMPTOM
Get detailed information from the customer about the symptom (the condition and the environment when the incident/malfunction occurred).
>> GO TO 2
2.CONFIRM THE SYMPTOM
Try to confirm the symptom described by the customer. Verify relation between the symptom and the condition when the symptom is detected. Refer to AV-393, "Symptom Table".
>> GO TO 3
3.DETECT MALFUNCTIONING PART BY DIAGNOSTIC PROCEDURE
Inspect according to Diagnostic Procedure of the system.
Is malfunctioning part detected? YES >> GO TO 4
NO >> GO TO 2
4.REPAIR OR REPLACE THE MALFUNCTIONING PART
>> GO TO 5
5.FINAL CHECK
Refer to confirmed symptom in step 2, and make sure that the symptom is not detected.
Was the repair confirmed? YES >> Inspection End.
NO >> GO TO 2
Inspection and adjustment
Additional service when replacing av control unit
Additional service when replacing av control unit : description
BEFORE REPLACEMENT
When replacing AV control unit, save or print current vehicle specification with CONSULT configuration before replacement.
NOTE:
If “Before Replace ECU” cannot be used, use the “After Replace ECU” or “Manual Configuration” after replacing AV control unit.
AFTER REPLACEMENT
CAUTION:
When replacing AV control unit, you must perform “After Replace ECU” with CONSULT.
Additional service when replacing av control unit : work procedure
1.SAVING VEHICLE SPECIFICATION
-CONSULT
Enter “Re/Programming, Configuration” and perform “Before Replace ECU” to save or print current vehicle specification.
NOTE:
If “Before Replace ECU” cannot be used, use the “After Replace ECU” or “Manual Configuration” after replacing AV control unit.
>> GO TO 2.
2.REPLACE AV CONTROL UNIT
Replace AV control unit. Refer to AV-406, "Removal and Installation".
>> GO TO 3.
3.WRITING VEHICLE SPECIFICATION
CONSULT
>> GO TO 4.
4.OPERATION CHECK
Check that the operation of the AV control unit and camera images (fixed guide lines) are normal.
>> Work End.
Configuration (av control unit)
Configuration (av control unit) : description
Vehicle specification needs to be written with consult because it is not written after replacing av control unit.
Configuration has three functions as follows:
Function | Description |
"Before replace ecu" |
|
"After replace ecu" | Writes the vehicle configuration with manual selection. |
"Select saved data list" | Writes the vehicle configuration with saved data. |
Caution:
Configuration (av control unit) : work procedure
1.Writing mode selection
Consult
Select “Reprogramming, Configuration” of AV control unit.
When writing saved data>>GO TO 2.
When writing manually>>GO TO 3.
2.Perform “saved data list”
Consult
Automatically “Operation Log Selection” window will display if “Before Replace ECU” was performed. Select applicable file from the “Save Data List” and press “Confirm”.
>> Work End.
3.Perform “after replace ecu” or “manual configuration”
Consult
Caution:
Thoroughly read and understand the vehicle specification. Ecu control may not operate normally if the setting is not correct.
Caution:
Make sure to select “next”, confirm each setting value and press “ok” even if the indicated configuration of brand new av control unit is same as the desirable configuration. If not, configuration which is set automatically by selecting vehicle model can not be memorized.
>> Go to 4.
4.Operation check
Confirm that each function controlled by av control unit operates normally.
>> Work end.
Configuration (av control unit) : configuration list
Caution:
Thoroughly read and understand the vehicle specification. Incorrect settings may result in abnormal control of ecu.
⇔: Items which confirm vehicle specifications
Checking bulbs
With all doors closed, apply the parking brake
and place the ignition switch in the ON position
without starting the engine. The following lights
will come on:
If equipped, the following lights come on briefly
and then go off:
If any light fails to come on, it may indicate
an open circuit ...
Symptom diagnosis
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Symptom table
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Before performing diagnosis, confirm that the cellular phone being used
by the customer is compatible with
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Description
The engine coolant temperature signal is transmitted from ecm to the
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Dtc logic
Dtc detection logic
Dtc
Consult
Detection condition
Probable malfunction location
B2268
Water temp meter
[b2268]
Ecm continuous ...