Toyota Tacoma (2015-2018) Service Manual: Cruise Main Indicator Light Circuit

Toyota Tacoma (2015-2018) Service Manual / Cruise Control / Dynamic Radar Cruise Control System(for 2gr-fks) / 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

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.

(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

GO TO METER / GAUGE SYSTEM

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	-

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

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

REPLACE COMBINATION METER ASSEMBLY

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:

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 assembl ...

Main Body ECU Communication Stop Mode
DESCRIPTION Detection Item Symptom Trouble Area Main Body ECU Communication Stop Mode Either condition is met: Communication stop for "Main Body" is indicated on the "Communication Bus Check" screen ...

Rear Differential Lock Position SW Stuck OFF (P17BB)
DESCRIPTION This DTC is output when an OFF malfunction of the differential lock indicator switch is detected. DTC No. Detection Item DTC Detection Condition Trouble Area P17BB Rear Differential Lock Position SW Stuck OFF ...