Toyota Yaris: Sfi System / MIL Circuit
DESCRIPTION
The Malfunction Indicator Lamp (MIL) is used to indicate vehicle malfunctions detected by the ECM.
The MIL operation can be checked visually. When the ignition switch is first turned to ON, the MIL should be illuminated and should then turn off after the engine is started. If the MIL remains illuminated or is not illuminated, conduct the following troubleshooting procedure using the GTS.
WIRING DIAGRAM
PROCEDURE
| 1. | CHECK THAT MIL IS ILLUMINATED |
(a) Perform troubleshooting in accordance with the table below.
| MIL | Condition | Proceed to |
|---|---|---|
| Illuminates → Turns off | Ignition switch ON → engine is started | A |
| Other than above | - | B |
| A |
 | CHECK FOR INTERMITTENT PROBLEMS |
|
| 2. | CHECK COMMUNICATION BETWEEN GTS AND ECM |
(a) Check the communication between the GTS and ECM.
HINT:
It can be checked using the "Engine" item of the Data List.
| Result | Proceed to |
|---|---|
| Communication is possible | A |
| Communication is not possible | B |
| B |
 | GO TO VC OUTPUT CIRCUIT |
|
| 3. | CHECK WHETHER DTC OUTPUT RECURS |
(a) Perform the Health Check using the GTS.
(b) Check if any DTCs have been detected. Note down any DTCs.
| Result | Proceed to |
|---|---|
| DTCs are not output | A |
| Any DTCs is output | B |
HINT:
Check for detected DTCs output from other ECUs which relate to the MIL.
| B |
 | REPAIR CIRCUIT INDICATED BY OUTPUT |
|
| 4. | PERFORM ACTIVE TEST USING GTS |
(a) Check the status of the MIL while performing the Active Test.
Body Electrical > Combination Meter > Active Test| Tester Display |
|---|
| Check Engine Warning |
| Result | Proceed to |
|---|---|
| Changes | A |
| Does not change | B |
| A |
 | REPLACE ECM |
| B |
 | REPLACE COMBINATION METER ASSEMBLY |
Brake Override System
DESCRIPTION When the vehicle is being driven, depressing the accelerator pedal sensor assembly and brake pedal will activate the brake override system to restrict engine output...
Ignition Circuit
DESCRIPTION A direct ignition system is used on this vehicle. The direct ignition system is a 1 cylinder ignition system which ignites one cylinder with one ignition coil...
Other information:
Toyota Yaris XP210 (2020-2026) Reapir and Service Manual: Components
COMPONENTS ILLUSTRATION *1 CLUTCH MASTER CYLINDER GASKET *2 CLUTCH MASTER CYLINDER ASSEMBLY *3 CLUTCH MASTER CYLINDER PUSH ROD CLEVIS WITH HOLE PIN *4 CLUTCH MASTER CYLINDER TO FLEXIBLE HOSE TUBE *5 NO. 1 CLUTCH RESERVOIR HOSE - - Tightening torque for "Major areas involving basic vehicle performance such as moving/turning/stopping": N*m (kgf*cm, ft...
Toyota Yaris XP210 (2020-2026) Reapir and Service Manual: Fail-safe Chart
FAIL-SAFE CHART If any of the following DTCs are stored, the engine stop and start ECU enters fail-safe mode to preserve vehicle operability. DTC Component Fail-safe Operation Fail-safe Deactivation Condition P033562 Open in engine speed signal circuit Stop and start control is prohibited Engine is automatically restarted if a DTC is stored while the engine is stopped by stop and start control All of the following conditions are met for 10 seconds: Normal communication with ECM Engine speed 500 rpm or higher Engine speed (communication signal) 500 rpm or higher Difference between engine speed from pulse signal and engine speed from communication signal is less than 100 rpm P055500 P05552A Vacuum sensor assembly Brake booster assembly Vacuum hose (brake booster hose) Stop and start control is prohibited Engine is automatically restarted if a DTC is stored while the engine is stopped by stop and start control One of the following conditions is met: Vacuum changes while the brake pedal is depressed Vacuum changes a specified number of times while the vehicle is being driven faster than a certain vehicle speed P055511 P055515 Vacuum sensor assembly circuit Stop and start control is prohibited Engine is automatically restarted if a DTC is stored while the engine is stopped by stop and start control Sensor output is within standard range P060629 Engine stop and start ECU Stop and start control is prohibited Engine is automatically restarted if a DTC is stored while the engine is stopped by stop and start control Pass condition detected and ignition switch turned to ON P060B1C P060B49 P060B71 Analog to digital converter (Engine stop and start ECU) Stop and start control is prohibited Engine is automatically restarted if a DTC is stored while the engine is stopped by stop and start control Pass condition detected and ignition switch turned to ON P061519 ST NO...
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Front Seat Belt Pretensioners
The front seat belt pretensioners are designed to deploy in moderate or severe frontal, near frontal collisions.
In addition, the pretensioners operate when a side collision or a rollover accident is detected. The pretensioners operate differently depending on what types of air bags are equipped. For more details about the seat belt pretensioner operation, refer to the SRS Air Bag Deployment Criteria.
