CAUTION / NOTICE / HINT
HINT:
- Use the following procedure to troubleshoot the power door lock control system.
- *: Use the Techstream.
PROCEDURE |
1. | VEHICLE BROUGHT TO WORKSHOP |
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NEXT |
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| 2. |
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 |
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| 3. |
READ AND SAVE OPERATION HISTORY |
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 and saved, the operation history
information could be lost.
- The operation history function uses the current system time of the
Techstream and the time counter inside the controlling ECU to calculate
the times shown in the operation history. For this reason, before
reading 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
 Body Electrical > Main Body > Utility
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Tester Display | | Operation History |
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(a) Measure the battery voltage.
Standard Voltage: 11 to 14 V If the voltage is below 11 V, recharge or replace the battery before proceeding to the next step.
(b) Check the fuses and relays. (c)
Check the connector connections and terminals to make sure that there
are no abnormalities such as loose connections, deformation, etc.
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| 5. |
CHECK COMMUNICATION FUNCTION OF CAN COMMUNICATION SYSTEM* |
(a) Using the Techstream, check for CAN communication system DTCs. Click here
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Result | Proceed to | |
CAN DTCs are not output |
A | | CAN DTCs are output |
B |
| B |
 | GO TO CAN COMMUNICATION SYSTEM |
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A | |
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| 6. |
CHECK COMMUNICATION FUNCTION OF LIN COMMUNICATION SYSTEM* |
(a) Using the Techstream, check for LIN communication system DTCs. Click here
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Result | Proceed to | |
LIN DTCs are not output |
A | | LIN DTCs are output |
B |
| B |
| GO TO LIN COMMUNICATION SYSTEM |
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A | |
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| 7. |
CHECK FOR DTC (MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY)* |
(a) Clear the DTCs. Click here Body Electrical > Master Switch > Clear DTCs
(b) Recheck for DTCs. Body Electrical > Master Switch > Trouble Codes
|
Result | Proceed to | |
DTC B2312 is not output |
A | | DTC B2312 is output |
B |
| B |
| GO TO POWER WINDOW CONTROL SYSTEM |
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A | |
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| 8. |
CHECK FOR DTC (MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU))* |
(a) Clear the DTCs. Click here Body Electrical > Main Body > Clear DTCs
(b) Recheck for DTCs. Body Electrical > Main Body > Trouble Codes
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Result | Proceed to | |
DTC B1243 is not output |
A | | DTC B1243 is output |
B |
| B |
| GO TO DIAGNOSTIC TROUBLE CODE CHART |
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A | |
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| 9. |
PROBLEM SYMPTOMS TABLE | (a) Refer to Problem Symptoms Table.
Click here
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Result | Proceed to | |
Fault is not listed in Problem Symptoms Table (Fault can be simulated) |
A | | Fault is not listed in Problem Symptoms Table (Fault cannot be simulated) |
B | | Fault is listed in Problem Symptoms Table |
C |
| B |
| CHECK FOR INTERMITTENT PROBLEMS |
| C |
| GO TO STEP 11 |
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A | |
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| 10. |
OVERALL ANALYSIS AND TROUBLESHOOTING* |
(a) Terminals of ECU Click here
(b) Data List / Active Test Click here
(c) Operation Check Click here
(d) Inspection
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| NEXT |
| END | |
