How To Proceed With Troubleshooting [09/2017 - ]: Procedure

CUSTOMER PROBLEM ANALYSIS CHECK

HINT:

In troubleshooting, confirm that the problem symptoms have been accurately identified. Preconceptions should be discarded in order to make an accurate judgment. To clearly understand what the problem symptoms are, it is extremely important to ask the customer about the problem and the conditions at the time the malfunction occurred.
Gather as much information as possible for reference. Past problems that seem unrelated may also help in some cases.
The following 5 items are important points for problem analysis:

What	Vehicle model, system name
When	Date, time, occurrence frequency, whether the problem occurred recently or has been occurring for a long time
Where	Whether the problem occurs at a specific location
Under what conditions?	Whether the doors were locked or unlocked, whether the engine switch was on (IG), whether the engine has started
How did it happen?	Problem symptoms

Result

Proceed to
NEXT

Result:

See step 3

INSPECT BATTERY VOLTAGE

Measure the battery voltage with the.

Standard voltage

11 to 14 V

If the voltage is below 11 V, recharge or replace the battery before proceeding.

Result

Proceed to
NEXT

Result:

See step 4

CHECK COMMUNICATION FUNCTION OF LIN COMMUNICATION SYSTEM*

Use the Techstream to check if the LIN communication system is functioning normally.

Result

Result	Proceed to
LIN DTC is not output	A
LIN DTC is output	B

Result:

Result:

See step 5

PROBLEM SYMPTOMS TABLE

Refer to Problem Symptoms Table.

Result

Result	Proceed to
Fault is not listed in Problem Symptoms Table.	A
Fault is listed in Problem Symptoms Table.	B

Result:

ADJUST, REPAIR OR REPLACE IN ACCORDANCE WITH PROBLEM SYMPTOMS TABLE

Result:

See step 6

OVERALL ANALYSIS AND TROUBLESHOOTING*

Operation Check

Result

Proceed to
NEXT

Result:

See step 7