Toyota Yaris: Stop And Start System / How To Proceed With Troubleshooting
CAUTION / NOTICE / HINT
HINT:
*: Use the GTS.
PROCEDURE
| 1. | VEHICLE BROUGHT TO WORKSHOP |
|
| 2. | CUSTOMER PROBLEM ANALYSIS |
|
| 3. | PRE-CHECK |
(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.
HINT:
-
If the auxiliary battery voltage is less than 11 V, recharge or replace the auxiliary battery. If the integrated current value does not exceed the threshold*1 even though the auxiliary battery has been replaced or charged until the charging current decreases to 5 A or less, perform an integrated current value initialization*2 and drive the vehicle for approximately 5 to 40 minutes until the stop and start system operates.
-
*1: Refer to System Description for details on the integrated current threshold.
Click here
-
*2: Use the GTS to perform Integrated Current Value Initialization.
Click here
-
*1: Refer to System Description for details on the integrated current threshold.
- When replacing the auxiliary battery, even if the stop and start system operates directly after performing integrated current value initialization, operation of the stop and start system may be prohibited at certain times over the next few trips while auxiliary battery charge learning is performed.
(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.
|
| 4. | CHECK DTC AND FREEZE FRAME DATA* |
(a) Check for DTCs.
Powertrain > Stop and Start > Trouble Codes(b) Check for freeze frame data.
HINT:
Record or print DTCs and freeze frame data if necessary.
(c) Clear the DTCs and freeze frame data.
Powertrain > Stop and Start > Clear DTCs(d) Recheck for DTCs.
Powertrain > Stop and Start > Trouble CodesHINT:
If any DTCs for the CAN communication system are output, troubleshoot those DTCs first.
| Result | Proceed to |
|---|---|
| DTCs are not output | A |
| DTCs are output | B |
| Malfunction cannot be duplicated and DTCs are not output | C |
| B |
 | GO TO DIAGNOSTIC TROUBLE CODE CHART |
| C |
 | USE SIMULATION METHOD TO CHECK |
|
| 5. | REFER TO PROBLEM SYMPTOMS TABLE |
(a) Refer to Problem Symptoms Table.
Click here
| Result | Proceed to |
|---|---|
| Fault is not listed in problem symptoms table | A |
| Fault is listed in problem symptoms table | B |
| B |
 | GO TO STEP 7 |
|
| 6. | OVERALL ANALYSIS AND TROUBLESHOOTING* |
(a) Data List / Active Test
Click here
(b) Terminals of ECU
Click here
|
| 7. | REPAIR OR REPLACE |
|
| 8. | CONFIRMATION TEST |
(a) Warm up the engine.
(b) Turn the air conditioning system off.
(c) Drive the vehicle for 5 to 40 minutes.
CAUTION:
When performing Confirmation Driving Pattern, obey all speed limits and traffic laws.
(d) Stop the vehicle and confirm that the engine is stopped by stop and start control when all of the following conditions are met:
- Steering wheel centered
- Shift lever to neutral and release the clutch pedal
- Stop and start indicator illuminated
HINT:
If the engine is not stopped by stop and start control, air fuel ratio learning and idle speed learning are necessary. Allow the engine to idle for 3 minutes and check that the engine idle speed is within 50 rpm of the target idle speed.
(e) Depress the clutch pedal and check that the engine restarts.
| NEXT |
 | END |
System Description
SYSTEM DESCRIPTION STOP AND START CONTROL The stop and start system operates according to the following conditions, achieving appropriate engine stop and start control together with safe and smooth driving characteristics...
Operation Check
OPERATION CHECK STOP AND START SYSTEM OPERATION CHECK HINT:
If the cable is disconnected from the battery terminal, stop and start control is prohibited until refresh charge is completed...
Other information:
Toyota Yaris XP210 (2020-2024) Reapir and Service Manual: Removal
REMOVAL CAUTION / NOTICE / HINT The necessary procedures (adjustment, calibration, initialization, or registration) that must be performed after parts are removed, installed, or replaced during the front shock absorber assembly removal/installation are shown below...
Toyota Yaris XP210 (2020-2024) Reapir and Service Manual: Customize Parameters
CUSTOMIZE PARAMETERS CUSTOMIZE POWER MIRROR CONTROL SYSTEM NOTICE: When the customer requests a change in a function, first make sure that the function can be customized. Record the current settings before customizing. HINT: The following items can be customized...
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Fuel Gauge
The fuel gauge shows approximately how much fuel is remaining in the tank when the ignition is switched ON. We recommend keeping the tank over 1/4 full.
