Toyota Tacoma manuals

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

DESCRIPTION

  • When the ECM detects a cruise control switch on signal from the cruise control switch, the ECM sends the signal to the combination meter assembly through CAN communication. Then the cruise control indicator light turns on.
  • The cruise control indicator light circuit uses CAN communication. If there is a malfunction in this circuit, check for DTCs in the CAN communication system before troubleshooting this circuit.

PROCEDURE

1.

PERFORM ACTIVE TEST USING TECHSTREAM (CRUISE MAIN INDICATOR LIGHT)

(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) According to the display on the Techstream, perform the Active Test.

Combination Meter

Tester Display

Test Part

Control Range

Diagnostic Note

Indicat. Lamp Cruise

Cruise main indicator light

ON/OFF

Confirm that the vehicle is stopped with the engine idling.

OK:

Cruise main indicator light turns on/off.

NG

GO TO METER / GAUGE SYSTEM

OK

2.

READ VALUE USING TECHSTREAM (CRUISE 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 / Cruise Control / Data List.

(e) According to the display on the Techstream, read the Data List.

Cruise Control

Tester Display

Measurement Item/Range

Normal Condition

Diagnostic Note

Main SW M-CPU

Cruise control switch (Main CPU) / OFF or ON

OFF: Cruise control switch off

ON: Cruise control switch on

-

OK:

On screen, item changes between ON and OFF according to above chart.

OK

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

NG

REPLACE ECM

Cruise Control Switch Circuit
DESCRIPTION This circuit sends signals to the ECM depending on the cruise control main switch condition. The battery supplies the positive (+) battery voltage to the cruise control main switch. ...

TC and CG Terminal Circuit
DESCRIPTION The DLC3 circuit enables reading of Diagnostic Trouble Codes (DTCs) with no Techstream by connecting terminals TC and CG of the DLC3 connector. Stored DTCs are displayed in blinking pa ...

Other materials:

Key information
The following keys are provided with the vehicle. Vehicles without engine immobilizer system Master keys Key number plate Vehicles with engine immobilizer system Master keys Key number plate ■Key number plate Keep the plate in a safe place such as your wallet, not in the v ...

Installation
INSTALLATION PROCEDURE 1. INSTALL TRANSFER POSITION SWITCH (for 4WD) Click here 2. INSTALL ENGINE SWITCH Click here 3. INSTALL AIR CONDITIONING CONTROL ASSEMBLY (a) Connect the connectors. (b) Engage the 8 clips to install the air conditioning control assembly. 4. INSTALL RADIO AND DISP ...

Diagnosis System
DIAGNOSIS SYSTEM 1. CHECK DLC3 (a) Check the DLC3 (See page ). 2. INSPECT BATTERY VOLTAGE (a) Measure the battery voltage. Standard Voltage: 11 to 14 V If the voltage is below 11 V, recharge or replace the battery. 3. SELF-DIAGNOSTIC MODE (OPERATING IGNITION KEY CYLINDER) (a) Switch to se ...

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