Toyota Tacoma 2015-2018 Service Manual: 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) illuminates. The ECM uses this and other indicators to indicate the control condition (presence or absence of a preceding vehicle, vehicle-to-vehicle distance, and set vehicle speed) and fail-safe state via CAN communication.
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
- When replacing the combination meter assembly, always replace it with a new one. If a combination meter assembly which was installed to another vehicle is used, the information stored in it will not match the information from the vehicle and a DTC may be stored.
PROCEDURE
|
1. |
PERFORM ACTIVE TEST USING TECHSTREAM (METER DISPLAY 1) |
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Turn the Techstream on.
(d) Enter the following menus: Body Electrical / Combination Meter / Active Test.
(e) Perform the Active Test according to the display on the Techstream.
Body Electrical > Combination Meter > Active Test
|
Tester Display |
Measurement Item |
Control Range |
Diagnostic Note |
|---|---|---|---|
|
Meter Display 1 |
Multi-information display |
OFF, 6 to 0 or All |
- |
|
Result |
Proceed to |
|---|---|
|
The multi-information display in the combination meter assembly turns on or off according to the operation of the Active Test. |
A |
|
The multi-information display in the combination meter assembly does not turn on or off according to the operation of the Active Test. |
B |
| B | .gif) |
GO TO METER / GAUGE SYSTEM |
|
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|
2. |
READ VALUE USING TECHSTREAM (CRUISE READY MAIN-CPU, CRUISE READY SUB-CPU, CRUISE INDICATOR) |
(a) Enter the following menus: Powertrain / Radar Cruise1 / Data List.
(b) Read the Data List according to the display on the Techstream.
Powertrain > Radar Cruise1 > Data List
|
Tester Display |
Measurement Item |
Range |
Normal Condition |
Diagnostic Note |
|---|---|---|---|---|
|
Cruise Ready Main-CPU |
Cruise control system standby condition |
ON or OFF |
Each time cruise control main switch (ON-OFF button) is pushed, ON or OFF changes |
- |
|
Cruise Ready Sub-CPU |
Cruise control system standby condition |
ON or OFF |
Each time cruise control main switch (ON-OFF button) is pushed, ON or OFF changes |
- |
|
Cruise Indicator |
Cruise control indicator status |
ON or OFF |
ON: Cruise control indicator illuminates OFF: Cruise control indicator turns off |
- |
|
Result |
Proceed to |
|---|---|
|
The cruise control indicator illuminates and turns off according to the operation of the cruise control main switch (ON-OFF button). |
A |
|
The cruise control indicator does not illuminate but the Data List item Cruise Indicator changes according to the operation of the cruise control main switch (ON-OFF button). |
B |
|
The cruise control indicator does not illuminate and the Data List item Cruise Indicator does not change according to the operation of the cruise control main switch (ON-OFF button). |
C |
| A | |
PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE |
| B | |
REPLACE COMBINATION METER ASSEMBLY |
| C | |
REPLACE ECM |
Cruise Control Switch Circuit
DESCRIPTION
The cruise control main switch is used to turn the dynamic radar cruise control
system on and off, as well as operate 7 functions: SET, - (COAST), TAP-DOWN, RES
(RESUME), + (ACCEL), T ...
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 ...
Other materials:
Tire information
Typical tire symbols
1. Tire size
2. DOT and Tire Identification Number (TIN)
3. Location of treadwear indicators
4. Tire ply composition and materials
Plies are layers of rubber-coated parallel cords. Cords are the strands which
form the plies in a tire.
5. Uniform tire quality grading
F ...
Downhill Assist Control Switch Malfunction (Test Mode DTC) (C1379)
DESCRIPTION
DTC C1379 is cleared when the crawl control switch sends a crawl control operation
signal or when test mode ends.
DTC Code
DTC Detection Condition
Trouble Area
C1379
Stored only during test mode.
Crawl ...
CD Sound Skips
PROCEDURE
1.
CHECK CD
(a) Check that the CD is not deformed or cracked.
OK:
No deformation or cracks on the CD
NG
CD IS FAULTY
OK
...