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 |
|
.gif)
|
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:
Problem Symptoms Table
PROBLEM SYMPTOMS TABLE
NOTICE:
Before replacing the ECM, refer to Registration.
w/ Smart Key System: Click here
w/o Smart Key System: Click here
When the millimeter wave radar sensor assembly is replaced with a new
one, adjustment of the radar sensor beam axis must be ...
Open in One Side of Bus 2 Branch Line
DESCRIPTION
When the CAN bus main lines are normal (no open, short to ground, short to +B
or short between lines) and there is an ECU or sensor on the "Communication Bus
Check" screen that is indicated as not communicating or whose connection status
on the "Communication Bus Ch ...
Air conditioning system
Adjusting the settings
■ Adjusting the temperature setting
Turn the temperature control dial clockwise (warm) or counterclockwise (cool).
If is not pressed, the system will
blow ambient temperature air or heated air.
For quick cooling, turn the temperature control dial to the MAX A/C ...
