CAUTION / NOTICE / HINT
HINT:
- Use the following procedures to troubleshoot the power door lock control
system.
- *: Use the Techstream.
PROCEDURE
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1.
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VEHICLE BROUGHT TO WORKSHOP
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2.
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CUSTOMER PROBLEM ANALYSIS CHECK
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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:
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What
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Vehicle model, system name
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When
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Date, time, occurrence frequency, whether the problem occurred recently
or has been occurring for a long time
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Where
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Whether the problem occurs at a specific location
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Under what conditions?
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Whether the doors were locked or unlocked, whether the ignition switch
was ON, whether the engine has started
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How did it happen?
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Problem symptoms
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3.
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READ AND SAVE OPERATION HISTORY
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NOTICE:
- If the vehicle or vehicle controls are operated (for example, during initial
inspection when the vehicle is brought in for repair) before operation history
has been read out and saved, the operation history information could be lost.
- The function "Read operation history" uses the current system time setting
inside the Techstream and the time counter inside the controlling ECU to calculate
the timings shown in the operation history. For this reason, before reading
out the operation history, first make sure that the Techstream system clock
is accurately set to the current time.
(a) Read and save operation history using the Techstream.
Click here 
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4.
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INSPECT BATTERY VOLTAGE
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Standard voltage:
11 to 14 V
If the voltage is below 11 V, recharge or replace the battery before proceeding.
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5.
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CHECK COMMUNICATION FUNCTION OF CAN COMMUNICATION SYSTEM*
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(a) Use the Techstream to check if the CAN communication system is functioning
normally.
Click here
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Result
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Proceed to
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CAN DTC is not output
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A
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CAN DTC is output
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B
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| B |
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GO TO CAN COMMUNICATION SYSTEM
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| A |
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6.
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CHECK COMMUNICATION FUNCTION OF LIN COMMUNICATION SYSTEM*
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(a) Use the Techstream to check if the LIN communication system is functioning
normally.
Click here
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Result
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Proceed to
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LIN DTC is not output
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A
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LIN DTC is output
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B
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| B |
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GO TO LIN COMMUNICATION SYSTEM
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| A |
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7.
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PROBLEM SYMPTOMS TABLE
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(a) Refer to Problem Symptoms Table.
Click here
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Result
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Proceed to
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Fault is not listed in Problem Symptoms Table (Fault can be simulated)
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A
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Fault is not listed in Problem Symptoms Table (Fault cannot be simulated)
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B
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Fault is listed in problem symptoms table
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C
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| B |
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CHECK FOR INTERMITTENT PROBLEMS
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| C |
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ADJUST, REPAIR OR REPLACE IN ACCORDANCE WITH PROBLEM SYMPTOMS TABLE
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| A |
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8.
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OVERALL ANALYSIS AND TROUBLESHOOTING*
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(a) Operation Check
Click here
(b) Terminals of ECU
Click here
(c) DATA LIST/ACTIVE TEST
Click here
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END
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