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:

Starting System
Parts Location PARTS LOCATION ILLUSTRATION ILLUSTRATION Precaution PRECAUTION 1. IGNITION SWITCH EXPRESSIONS (a) The type of ignition switch used on this model differs depending on the specifications of the vehicle. The expressions listed in the table below are used in this section. ...

Dtc Check / Clear
DTC CHECK / CLEAR 1. START DIAGNOSTIC MODE HINT: Illustrations may differ from the actual vehicle screen depending on the device settings and options. Therefore, some detailed areas may not be shown exactly the same as on the actual vehicle screen. If the system cannot enter d ...

Open in Outer Mirror Indicator(Slave) (C1AB5)
DESCRIPTION This DTC is stored when the blind spot monitor sensor RH detects an open in the blind spot monitor indicator RH. DTC Code DTC Detection Condition Trouble Area C1AB5 With the blind spot monitor main switch assembly (warning ...

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