Toyota Yaris: Power Steering System / Vehicle Control History
VEHICLE CONTROL HISTORY
DESCRIPTION
- Vehicle Control History is a function that captures and stores ECU data when triggered by specific vehicle behavior.
- It may be possible to determine the cause of the malfunction by checking the vehicle history information and freeze frame data.
- The number of possible stored Freeze Frame Data sets, whether multi Freeze Frame Data is available, the number of freeze frame points, Freeze Frame Data items, the ECU internal range, etc., is different depending on the stored group.
-
The stored data items for Vehicle Control History Freeze Frame Data are different depending on the stored group. When the value of a data item does not change across all points, only the value of the detection point will be displayed. The contents of the Freeze Frame Data is almost the same as that of the Data List.
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PRECAUTIONS
- As Vehicle Control History may be overwritten whenever the trigger conditions are met, make sure to save Vehicle Control History before performing any inspections.
- As Vehicle Control History may be stored when performing an Active Test, learning, etc., make sure to clear the Vehicle Control History before returning the vehicle to the customer.
CHECK VEHICLE CONTROL HISTORY (POWER STEERING SYSTEM)
(a) Enter the following menus: Chassis / EMPS / Utility / Vehicle Control History (RoB).
Chassis > EMPS > Utility| Tester Display |
|---|
| Vehicle Control History (RoB) |
| FFD Group | Code | Tester Display | Measurement Item | Diagnostic Note |
|---|---|---|---|---|
| - | X200C | Vehicle Speed Signal Invalidity |
| - |
| - | X206D | Power Source Stop | Latest Engine Stall/READY OFF Control History | - |
| - | X206E | High Load Continuation | Latest High Load Continuous Control Number of Times | - |
| - | X206F | Prevention of ECU/Motor Overheat | Latest Overheat Prevention Control History | - |
| - | X208F | Battery Voltage Drop |
| - |
| - | X2600 | Software Incompatibility with ENG/HV Control Module (Not Programmed) | History stored when vehicle information (gasoline/HV) is not stored | - |
| - | X2601 | Software Inconsistency with ENG/HV Control Module |
| - |
| - | X2603 | Software Inconsistency with Body Control Module |
| - |
| - | X2605 | Software Inconsistency with Brake Control Module |
| - |
| - | X2606 | Software Inconsistency with Suspension Control Module |
| - |
| - | X2608 | Software Incompatibility with VGRS Control Module (Not Programmed) | History stored when vehicle information (variable gear ratio steering system) not stored | - |
| - | X2609 | Software Inconsistency with VGRS Control Module | History stored when vehicle information (variable gear ratio steering system) does not match | - |
| - | X260A | Software Incompatibility with DRS Control Module (Not Programmed) | History stored when vehicle information (dynamic rear steering system) not stored | - |
| - | X260B | Software Inconsistency with DRS Control Module | History stored when vehicle information (dynamic rear steering system) does not match | - |
| - | X260D | Software Inconsistency with Steering Angle Sensor Module | History stored when vehicle information (variable gear ratio steering system) does not match | - |
| - | X2610 | Torque Sensor Missing Calibration of Adjustment Value Non-Memory | History stored when zero point calibration not performed | - |
| - | X2611 | Torque Sensor Missing Calibration of Adjustment Incomplete | History stored when zero point calibration failed | - |
| - | X2612 | Assist Map Non-Memory | History stored when Assist Map Writing has not been performed | - |
| - | XF01B | ECU Security Key Not Registered | ECU security key not updated | - |
CLEAR VEHICLE CONTROL HISTORY (POWER STEERING SYSTEM)
Chassis > EMPS > Utility| Tester Display |
|---|
| Vehicle Control History (RoB) |
(a) Press the DTC clear button.
NOTICE:
By performing this procedure, all stored Vehicle Control History items will be cleared.
VEHICLE CONTROL HISTORY FREEZE FRAME DATA (POWER STEERING SYSTEM)
Chassis > EMPS > Utility| Tester Display |
|---|
| Vehicle Control History (RoB) |
(a) Select a vehicle control history item to access the applicable freeze frame data.
(b) Check the freeze frame Data recorded with the Vehicle Control History.
| GTS Display | Description |
|---|---|
| Total Distance Traveled | Total distance traveled |
| Total Distance Traveled - Unit | Total Distance Traveled unit |
| Vehicle Speed | Vehicle speed from speedometer |
| Engine Revolution | Engine speed |
| Ready Status | Ready status |
| Battery Voltage | Auxiliary battery voltage |
| Steering Wheel Torque | Steering wheel torque |
| Steering Angle Velocity | Steering angle speed |
| Steering Angle | Steering angle |
| Status of Vehicle Power (IGP PT2) | State of IGP power source(PT2) |
| Status of Vehicle Power (IGP PT1) | State of IGP power source(PT1) |
| Status of Vehicle Power (IGP PDC) | State of IGP power source(PDC) |
| Status of Vehicle Power (IGR PDC) | State of IGR power source(PDC) |
| IG Power Supply | IG power source voltage |
| PIG Power Supply | PIG power source voltage |
| Thermistor Temperature | ECU substrate temperature |
| Power Source | Operating state of hybrid system |
| PS Assist Signal | Status of the record of power steering assist signal |
| Torque Sensor 1 Output | Torque sensor 1 output value |
| Torque Sensor 2 Output | Torque sensor 2 output value |
| Torque Sensor 3 Output | Torque sensor 3 output value |
| Torque Sensor 4 Output | Torque sensor 4 output value |
| Motor Actual Current (Q Axis) | Detected current flow to motor (detected current of axis q) |
| Command Value Current (Q Axis) | Target current flow to motor (requested current of axis q) |
| Motor Actual Current 2 (D Axis) | Detected current flow to motor (detected current of axis d) |
| Command Value Current 2 (D Axis) | Target current flow to motor (requested current of axis d) |
| Motor Rotation Angle | Motor rotation angle (detected by rotation sensor) |
| Final Motor Current limited (Q Axis) | Final motor current set limit (request current of axis q) |
| CAN Vehicle Speed (SP1) | Vehicle speed input value sent via CAN (equal to value indicated on speedometer) |
| CAN Steering Angle Speed (SSAV) | Steering wheel turning speed value sent via CAN |
| ECU Overheat Prevention Part | Internal component of ECU for which overheat protection control is performed |
| ECU Estimate Temperature of Overheat Prevention Part | Estimated temperature of internal component of ECU for which overheat protection control is performed |
| Motor Overheat Prevention Part | Internal component of motor for which overheat protection control is performed |
| Motor Estimate Temperature of Overheat Prevention Part | Estimated temperature of internal component of motor for which overheat protection control is performed |
On-vehicle Inspection
ON-VEHICLE INSPECTION PROCEDURE 1. CHECK STEERING EFFORT (TORQUE) NOTICE: These service operations may affect the SRS airbags. Be sure to read the precautionary notices concerning the SRS airbag system before servicing...
Power Steering Control Module Processor System Internal Failure (C05D604,...,C15D362)
DESCRIPTION DTC No. Detection Item DTC Detection Condition Trouble Area Warning Indicate Return-to-normal Condition Note C05D604 Power Steering Control Module Processor System Internal Failure ECU internal malfunction (CPU malfunction) Power steering ECU assembly EPS warning light: Comes on Ignition switch ON again - C05D646 Power Steering Control Module Processor Calibration / Parameter Memory Failure ECU internal malfunction (EEPROM error) Power steering ECU assembly EPS warning light: Comes on Ignition switch ON again - C05D649 Power Steering Control Module Processor Internal Electronic Failure ECU internal malfunction (Peripheral circuit malfunction) Power steering ECU assembly EPS warning light: Comes on Ignition switch ON again - C10001C Control Module Internal Temperature Sensor "A" Circuit Voltage Out of Range ECU temperature sensor "A" range malfunction Power steering ECU assembly EPS warning light: Comes on The ECU judges the system has returned to normal - C152A18 Power Steering Motor "A" Circuit Current Below Threshold Motor "A" low current malfunction Power steering ECU assembly EPS warning light: Comes on Ignition switch ON again - C152A19 Power Steering Motor "A" Circuit Current Above Threshold Motor "A" overcurrent Power steering ECU assembly EPS warning light: Comes on Ignition switch ON again - C152B18 Power Steering Motor "B" Circuit Current Below Threshold Motor "B" low current malfunction Power steering ECU assembly EPS warning light: Comes on Ignition switch ON again - C152B19 Power Steering Motor "B" Circuit Current Above Threshold Motor "B" overcurrent Power steering ECU assembly EPS warning light: Comes on Ignition switch ON again - C153A00 Malfunction of Power Steering Motor "A" Inverter Pre-Driver Inverter "A" pre-driver circuit malfunction Power steering ECU assembly EPS warning light: Comes on Ignition switch ON again - C153A19 Power Steering Motor "A" Inverter Circuit Current Above Threshold Inverter "A" short circuit malfunction Power steering ECU assembly EPS warning light: Comes on Ignition switch ON again - C153B00 Malfunction of Power Steering Motor "B" Inverter Pre-Driver Inverter "B" pre-driver circuit malfunction Power steering ECU assembly EPS warning light: Comes on Ignition switch ON again - C153B19 Power Steering Motor "B" Inverter Circuit Current Above Threshold Inverter "B" short circuit malfunction Power steering ECU assembly EPS warning light: Comes on Ignition switch ON again - C154A7E Power Supply & Contrary Connection Protection Relay "A" Actuator Stuck On Contrary connection protection relay "A" short circuit malfunction (initial check) Power steering ECU assembly EPS warning light: Comes on Ignition switch ON again - C154A7F Power Supply & Contrary Connection Protection Relay "A" Actuator Stuck Off Contrary connection protection relay "A" open circuit malfunction (initial check) Power steering ECU assembly EPS warning light: Comes on Ignition switch ON again - C154B7E Power Supply & Contrary Connection Protection Relay "B" Actuator Stuck On Contrary connection protection relay "B" short circuit malfunction (initial check) Power steering ECU assembly EPS warning light: Comes on Ignition switch ON again - C154B7F Power Supply & Contrary Connection Protection Relay "B" Actuator Stuck Off Contrary connection protection relay "B" open circuit malfunction (initial check) Power steering ECU assembly EPS warning light: Comes on Ignition switch ON again - C157A11 Power Steering Motor "A" Current Sensor Circuit Short to Ground Motor "A" current sensor low voltage malfunction Power steering ECU assembly EPS warning light: Comes on Ignition switch ON again - C157A62 Power Steering Motor "A" Current Sensor Signal Compare Failure Motor "A" current sensor correlation malfunction Power steering ECU assembly EPS warning light: Comes on Ignition switch ON again - C157B11 Power Steering Motor "B" Current Sensor Circuit Short to Ground Motor "B" current sensor low voltage malfunction Power steering ECU assembly EPS warning light: Comes on Ignition switch ON again - C157B62 Power Steering Motor "B" Current Sensor Signal Compare Failure Motor "B" current sensor correlation malfunction Power steering ECU assembly EPS warning light: Comes on Ignition switch ON again - C15D11C Power Steering Motor Position Sensor "A" Circuit Voltage Out of Range Rotation angle sensor "A" range malfunction Power steering ECU assembly EPS warning light: Comes on Ignition switch ON again - C15D162 Power Steering Motor Position Sensor "A" Signal Compare Failure Rotation angle sensor "A" correlation malfunction Power steering ECU assembly EPS warning light: Comes on Ignition switch ON again - C15D21C Power Steering Motor Position Sensor "B" Circuit Voltage Out of Range Rotation angle sensor "B" range malfunction Power steering ECU assembly EPS warning light: Comes on Ignition switch ON again - C15D262 Power Steering Motor Position Sensor "B" Signal Compare Failure Rotation angle sensor "B" correlation malfunction Power steering ECU assembly EPS warning light: Comes on Ignition switch ON again - C15D31C Power Steering Motor Position Sensor "C" Circuit Voltage Out of Range Rotation angle sensor "C" range malfunction Power steering ECU assembly EPS warning light: Comes on Ignition switch ON again - C15D362 Power Steering Motor Position Sensor "C" Signal Compare Failure Rotation angle sensor "C" correlation malfunction Power steering ECU assembly EPS warning light: Comes on Ignition switch ON again - CAUTION / NOTICE / HINT NOTICE: When the power steering ECU assembly has been replaced, perform Power Steering ECU Initial Setting (assist map writing)...
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.