Toyota Yaris: Airbag System / Check Mode Procedure
CHECK MODE PROCEDURE
CHECK MODE: DTC CHECK
(a) Select "Check Mode" and proceed with checking using the GTS.
Body Electrical > SRS Airbag > Utility
| Tester Display |
| Check Mode |
NOTICE:
Select Check Mode on the GTS to clear the DTCs (both current and history).
HINT:
-
DTCs can be detected more sensitively in check mode than in normal diagnosis mode.
-
Perform check mode inspection when DTCs were not output through normal diagnosis mode inspection regardless of whether a malfunction in a squib circuit is suspected.
FREEZE FRAME DATA DESCRIPTION (a) When an airbag system DTC is stored, the airbag sensor assembly stores the current vehicle (ECU, sensor or squib) state as Freeze Frame Data...
DATA LIST / ACTIVE TEST DATA LIST CAUTION: Never measure the resistance of the SRS parts because current from the tester may cause the SRS parts to deploy...
Other information:
DIAGNOSIS SYSTEM EURO-OBD (EUROPEAN SPEC) (a) When troubleshooting Europe On-Board Diagnostic (Euro-OBD) vehicles, an OBD scan tool (complying with ISO 15765-4) must be connected to the vehicle. Various data output from the vehicle's ECM can then be read...
DESCRIPTION The AWD ECU assembly receives signals from the ECM, steering sensor and skid control ECU (brake actuator assembly) via CAN communication. DTC No. Detection Item DTC Detection Condition Trouble Area Warning Indicate Memory U010087 Lost Communication with ECM/PCM "A" Missing Message When the ignition switch is ON, the IG1 terminal voltage is 10 V or more and the vehicle speed is 60 km/h (37 mph) or more, signals cannot be received from the ECM for 1 second or more
CAN communication system
AWD ECU assembly
ECM
Displayed Yes U012687 Lost Communication with Steering Angle Sensor Module Missing Message
When the following continues:
When the IG1 terminal voltage is 10 V or more, communication with the steering sensor is impossible for 1 second or more
When the IG1 terminal voltage is 10 V or more, a condition in which communication with the steering sensor is impossible occurs 1 time or more within a 5-second period, and this occurs 10 times within 60 seconds
CAN communication system
AWD ECU assembly
Steering sensor
Displayed Yes U012987 Lost Communication with Brake System Control Module Missing Message When the IG1 terminal voltage is 10 V or more, communication with the skid control ECU (brake actuator assembly) is impossible for 3 seconds or more
CAN communication system
AWD ECU assembly
Skid control ECU (Brake actuator assembly)
Displayed Yes PROCEDURE 1...
Categories
The front and side supplemental restraint systems (SRS) include different
types of air bags. Please verify the different types of air bags
which are equipped on your vehicle by locating the “SRS AIRBAG”
location indicators. These indicators are visible in the area where the
air bags are installed.
The air bags are installed in the following locations:
The steering wheel hub (driver air bag)
The front passenger dashboard (front passenger air bag)
The outboard sides of the front seatbacks (side air bags)
The front and rear window pillars, and the roof edge along both
sides (curtain air bags)
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