Toyota Yaris: Power Door Lock Control System / How To Proceed With Troubleshooting
CAUTION / NOTICE / HINT
HINT:
- Use the following procedure to troubleshoot the power door lock control system.
- *: Use the GTS.
PROCEDURE
| 1. | VEHICLE BROUGHT TO WORKSHOP |
|
| 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 ignition switch was ON, whether the engine has started |
| How did it happen? | Problem symptoms |
|
| 3. | READ AND SAVE VEHICLE CONTROL HISTORY* |
NOTICE:
- If the vehicle or vehicle controls are operated (for example, during initial inspection when the vehicle is brought in for repair) before vehicle control history has been read out and saved, the vehicle control history information could be lost.
- The function "Read vehicle control history" uses the current system time setting inside the GTS and the time counter inside the controlling ECU to calculate the timings shown in the vehicle control history. For this reason, before reading out the vehicle control history, first make sure that the GTS system clock is accurately set to the current time.
(a) Read and save vehicle control history using the GTS.
Click here
| Tester Display |
|---|
| Vehicle Control History (RoB) |
|
| 4. | INSPECT AUXILIARY BATTERY VOLTAGE |
(a) Measure the auxiliary battery voltage.
Standard voltage:
11 to 14 V (ignition switch off)
If the voltage is below 11 V, recharge or replace the auxiliary 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.
|
| 5. | CHECK CAN COMMUNICATION SYSTEM* |
(a) Using the GTS, check for CAN communication system DTCs.
Click here
| Result | Proceed to |
|---|---|
| CAN DTCs are not output | A |
| CAN DTCs are output | B |
| B |
 | GO TO CAN COMMUNICATION SYSTEM |
|
| 6. | CHECK LIN COMMUNICATION SYSTEM* |
(a) Using the GTS, check for LIN communication system DTCs.
Click here
| Result | Proceed to |
|---|---|
| LIN DTCs are not output | A |
| LIN DTCs are output | B |
| B |
 | GO TO LIN COMMUNICATION SYSTEM |
|
| 7. | CHECK POWER WINDOW CONTROL SYSTEM* |
(a) Clear the DTCs.
Click here
(b) Recheck for DTCs.
Click here
| Result | Proceed to |
|---|---|
| DTC B2312 is not output | A |
| DTC B2312 is output | B |
| B |
 | GO TO POWER WINDOW CONTROL SYSTEM |
|
| 8. | PROBLEM SYMPTOMS TABLE |
(a) Refer to Problem Symptoms Table.
Click here
| 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 can not be simulated) | B |
| Fault is listed in Problem Symptoms Table | C |
| B |
 | CHECK FOR INTERMITTENT PROBLEMS |
| C |
 | ADJUST, REPAIR OR REPLACE IN ACCORDANCE WITH PROBLEM SYMPTOMS TABLE |
|
| 9. | OVERALL ANALYSIS AND TROUBLESHOOTING* |
(a) Terminals of ECU
Click here
(b) Data List / Active Test
Click here
(c) Operation Check
Click here
(d) Inspection
|
| 10. | REPAIR OR REPLACE |
|
| 11. | CONFIRMATION TEST |
| NEXT |
 | END |
System Diagram
S..
Check For Intermittent Problems
CHECK FOR INTERMITTENT PROBLEMS NOTICE:
If the vehicle or vehicle controls are operated (for example, during initial inspection when the vehicle is brought in for repair) before vehicle control history has been read out and saved, the vehicle control history information could be lost...
Other information:
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Break-In Period
No special break-in is necessary, but a few precautions in the first 600 miles (1,000 km) may add to the performance, economy, and life of the vehicle.
Do not race the engine. Do not maintain one constant speed, either slow or fast, for a long period of time. Do not drive constantly at full-throttle or high engine rpm for extended periods of time. Avoid unnecessary hard stops. Avoid full-throttle starts.