Toyota Tacoma 2015-2018 Service Manual: Distance Control Switch Circuit
DESCRIPTION
The distance control switch is used to set the distance for vehicle-to-vehicle distance control mode. The distance control switch is installed in the steering pad switch assembly. The vehicle-to-vehicle distance set value can be changed by operating the steering pad switch assembly (distance control switch) while the dynamic radar cruise control system is controlling vehicle speed in vehicle-to-vehicle distance control mode.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
- Before replacing the ECM, refer to Registration.
w/o Smart Key System: Click here
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w/ Smart Key System: Click here
- 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
- When replacing the forward recognition camera, always replace it with a new one. If a forward recognition camera which was installed to another vehicle is used, the information stored in the forward recognition camera will not match the information from the vehicle. As a result, a DTC may be stored.
- If the forward recognition camera has been replaced with a new one,
be sure to perform Forward Recognition Camera Learning.
Click here
PROCEDURE
|
1. |
READ VALUE ON TECHSTREAM (DISTANCE CONTROL SWITCH) |
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Turn the Techstream on.
(d) Enter the following menus: Powertrain / Radar Cruise 2 / Data List.
(e) Read the Data List according to the display on the Techstream.
Powertrain > Radar Cruise2 > Data List
|
Tester Display |
Measurement Item |
Range |
Normal Condition |
Diagnostic Note |
|---|---|---|---|---|
|
Distance Control Switch |
Distance control switch signal |
ON or OFF |
ON: Distance control switch on OFF: Distance control switch off |
- |
OK:
The Data List item shown in the table changes according to the operation of the steering pad switch assembly (distance control switch).
| OK | .gif) |
PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE |
|
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|
2. |
INSPECT STEERING PAD SWITCH ASSEMBLY |
(a) Remove the steering pad switch assembly.
Click here
(b) Inspect the steering pad switch assembly.
Click here
| NG | |
REPLACE STEERING PAD SWITCH ASSEMBLY |
|
|
3. |
INSPECT SPIRAL CABLE WITH SENSOR SUB-ASSEMBLY |
(a) Remove the spiral cable with sensor sub-assembly.
Click here
(b) Inspect the spiral cable with sensor sub-assembly.
Click here
| NG | |
REPLACE SPIRAL CABLE WITH SENSOR SUB-ASSEMBLY |
|
|
4. |
CHECK HARNESS AND CONNECTOR (SPIRAL CABLE WITH SENSOR SUB-ASSEMBLY - FORWARD RECOGNITION CAMERA AND BODY GROUND) |
(a) Disconnect the S8 spiral cable with sensor sub-assembly connector.
(b) Disconnect the F46 forward recognition camera connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
S8-12 (DIST) - F46-3 (LKSW) |
Always |
Below 1 Ω |
|
S8-2 (ECC) - Body ground |
Always |
Below 1 Ω |
|
S8-12 (DIST) or F46-3 (LKSW) - Body ground |
Always |
10 kΩ or higher |
| OK | |
REPLACE FORWARD RECOGNITION CAMERA |
| NG | |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
Cruise Main Indicator Light Circuit
DESCRIPTION
When the dynamic radar cruise control system is turned on using the cruise control
main switch (ON-OFF button), the cruise control indicator (vehicle-to-vehicle distance
control mode) ...
Cruise SET Indicator Light Circuit
DESCRIPTION
The ECM illuminates the cruise control SET indicator by sending indicator output
demand signals to the combination meter assembly via CAN communication. The cruise
control SET indicat ...
Other materials:
How To Proceed With Troubleshooting
CAUTION / NOTICE / HINT
HINT:
Use the following procedures to troubleshoot the steering lock system.
*: Use the Techstream.
PROCEDURE
1.
VEHICLE BROUGHT TO WORKSHOP
NEXT
...
Vehicle Speed Signal Circuit between Radio Receiver and Combination Meter
DESCRIPTION
for Navigation Function:
The navigation receiver assembly receives a vehicle speed signal from
the combination meter assembly and sends the signal to navigation receiver
assembly.
for Automatic Sound Levelizer (ASL):
This circuit is necessary for the Aut ...
Freeze Frame Data
FREEZE FRAME DATA
CHECK FREEZE FRAME DATA
HINT:
The ECU records vehicle and driving condition information as freeze frame data
the moment a DTC is stored.
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Turn the Techstream on.
(d) Enter the following menus: P ...