Toyota Yaris: Dynamic Radar Cruise Control System / Steering Pad Switch Circuit
DESCRIPTION
- The steering pad switch assembly outputs the dynamic cruise control on/off signal and various control signals to the ECM.
- The ECM controls the dynamic cruise control system according to the signals received from the steering pad switch assembly.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
- Before replacing the ECM, refer to Service Bulletin.
-
The vehicle is equipped with a Supplemental Restraint System (SRS) which includes components such as airbags. Before servicing (including removal or installation of parts), be sure to read the precaution for Supplemental Restraint System.
Click here
PROCEDURE
| 1. | READ VALUE USING GTS |
(a) Read the Data List according to the display on the GTS.
Powertrain > Radar Cruise1 > Data List| Tester Display | Measurement Item | Range | Normal Condition | Diagnostic Note |
|---|---|---|---|---|
| Cancel Switch | CANCEL switch status | ON or OFF | ON: CANCEL switch pushed OFF: CANCEL switch not pushed | - |
| -SET Switch | -SET switch status | ON or OFF | ON: -SET switch pushed OFF: -SET switch not pushed | - |
| +RES Switch | +RES switch status | ON or OFF | ON: +RES switch pushed OFF: +RES switch not pushed | - |
| Cruise Main Switch Operation Condition | Cruise control main switch status | ON or OFF | ON: Cruise control main switch pushed OFF: Cruise control main switch not pushed | - |
| Tester Display |
|---|
| Cancel Switch |
| -SET Switch |
| +RES Switch |
| Cruise Main Switch Operation Condition |
OK:
The value of each Data List item changes according to the operation of the steering pad switch assembly.
| OK |
 | PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE |
|
| 2. | INSPECT STEERING PAD SWITCH ASSEMBLY |
Click here
| NG |
 | REPLACE STEERING PAD SWITCH ASSEMBLY |
|
| 3. | INSPECT SPIRAL CABLE SUB-ASSEMBLY |
Click here
| NG |
 | REPLACE SPIRAL CABLE SUB-ASSEMBLY |
|
| 4. | CHECK HARNESS AND CONNECTOR (SPIRAL CABLE SUB-ASSEMBLY - ECM AND BODY GROUND) |
(a) Disconnect the H60 spiral cable sub-assembly connector.
(b) Disconnect the A106 ECM connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| A106-27 (CCS) - H60-13 (CCS) | Always | Below 1 Ω |
| A106-28 (ECCS) - H60-2 (ECC) | Always | Below 1 Ω |
| A106-27 (CCS) or H60-13 (CCS) - Body ground | Always | 10 kΩ or higher |
| A106-28 (ECCS) or H60-2 (ECC) - Body ground | Always | 10 kΩ or higher |
(d) Connect the A106 ECM connector.
(e) Connect the H60 spiral cable sub-assembly connector.
| NG |
 | REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
| 5. | CHECK HARNESS AND CONNECTOR (ECM - BODY GROUND) |
(a) Disconnect the A106 ECM connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| A106-10 (E1) - Body ground | Always | Below 1 Ω |
(c) Connect the A106 ECM connector.
| OK |
 | REPLACE ECM |
| NG |
 | REPAIR OR REPLACE HARNESS OR CONNECTOR |
Invalid Data Received from ECM/PCM "A" Invalid Serial Data Received (U040181)
DESCRIPTION If the ECM cannot recognize the millimeter wave radar sensor assembly. DTC U040181 is stored. DTC No. Detection Item DTC Detection Condition Trouble Area DTC Output from U040181 Invalid Data Received from ECM/PCM "A" Invalid Serial Data Received Approximately 17 seconds or more after the ignition switch is turned to ON, the ECM cannot recognize the millimeter wave radar sensor assembly for approximately 5 seconds or more...
Distance Control Switch Circuit
DESCRIPTION The vehicle-to-vehicle distance control switch is used to set the distance for vehicle-to-vehicle distance control mode. The vehicle-to-vehicle distance control switch is installed in the steering pad switch assembly...
Other information:
Toyota Yaris XP210 (2020-2024) Reapir and Service Manual: Installation
INSTALLATION PROCEDURE 1. INSTALL REAR SPOILER ASSEMBLY (a) Engage the clips to install the rear spoiler assembly. (b) Install the 2 bolts and 3 nuts. Torque: 5.5 N·m {56 kgf·cm, 49 in·lbf} (c) Remove the protective tape. 2. INSTALL REAR SPOILER HOLE COVER (a) Install the 4 rear spoiler hole covers...
Toyota Yaris XP210 (2020-2024) Reapir and Service Manual: Diagnostic Trouble Code Chart
D..
Categories
- Manuals Home
- Toyota Yaris Owners Manual
- Toyota Yaris Service Manual
- How to use USB mode
- Headlights
- Opening and Closing the Liftgate/Trunk Lid
- New on site
- Most important about car
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.
