Toyota Yaris: Active Torque Split Awd System / AWD Warning Light does not Come ON
DESCRIPTION
Refer to "AWD Warning Light Remains ON".
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WIRING DIAGRAM
Refer to "AWD Warning Light Remains ON".
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CAUTION / NOTICE / HINT
Refer to "AWD Warning Light Remains ON".
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PROCEDURE
| 1. | CHECK HARNESS AND CONNECTOR |
(a) Check that there is no looseness at the locking and connecting parts of the AWD ECU assembly connector.
OK:
No looseness at the locking and connecting parts
(b) Disconnect the O119 and O120 AWD ECU assembly connectors.
(c) Check the connector case and the terminal for deformation and corrosion.
OK:
No deformation or corrosion
(d) Connect the O119 and O120 AWD ECU assembly connectors.
| NG |
 | REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
| 2. | CHECK AWD WARNING MESSAGE |
(a) According to the display on the GTS, perform the Active Test and check the Data List "AWD Warning Light" turns ON/OFF.
Chassis > Four Wheel Drive > Data List| Tester Display | Measurement Item | Range | Normal Condition | Diagnostic Note |
|---|---|---|---|---|
| 4WD Warning Light | AWD warning (multi-information display) | OFF / ON | OFF: Warning off ON: Warning on | - |
| Tester Display | Measurement Item | Control Range | Diagnostic Note |
|---|---|---|---|
| 4WD Warning Light | AWD warning (multi-information display) | Warning ON/OFF | Observe combination meter assembly |
| Active Test Display |
|---|
| 4WD Warning Light |
| Data List Display |
|---|
| 4WD Warning Light |
| Result | Proceed to |
|---|---|
| Data List display does not switch ON/OFF | A |
| Data List display switches ON/OFF | B |
| A |
 | REPLACE AWD ECU ASSEMBLY |
| B |
 | GO TO METER / GAUGE SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING) |
AWD Warning Light Remains ON
DESCRIPTION The AWD ECU assembly is connected to the combination meter assembly via the CAN communication system. If the AWD ECU assembly stores any DTCs which are related to the active torque split AWD system, the warning message is displayed on the multi-information display in the combination meter assembly...
AWD Control Switch Circuit
DESCRIPTION Operate the AWD control switch (No. 2 combination switch assembly) and check that the Data List display and the messages in the multi-information display change according to the switch operation...
Other information:
Toyota Yaris XP210 (2020-2025) Reapir and Service Manual: Power Source Mode does not Change to ON (IG)
DESCRIPTION If the engine switch is pressed with the electrical key transmitter sub-assembly in the cabin, the certification ECU (smart key ECU assembly) receives a signal and changes the power source mode. Related Data List and Active Test Items Problem Symptom Data List and Active Test Power source mode does not change to on (IG) but does change to on (ACC) Power Source Control Power Supply Condition IGP Relay Circuit (Outside) Monitor IGP Relay Circuit (Inside) Monitor IGR Relay Circuit (Outside) Monitor IGR Relay Circuit (Inside) Monitor WIRING DIAGRAM CAUTION / NOTICE / HINT NOTICE: When using the GTS with the ignition switch off, connect the GTS to the DLC3 and turn a courtesy light switch on and off at intervals of 1...
Toyota Yaris XP210 (2020-2025) Reapir and Service Manual: Problem Symptoms Table
PROBLEM SYMPTOMS TABLE HINT: Use the table below to help determine the cause of the problem symptom. If multiple suspected areas are listed, the potential causes of the symptoms are listed in order of probability in the "Suspected Area" column of the table...
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Keys
To use the auxiliary key, press the knob and pull out the auxiliary key from the smart key.
