Toyota Tacoma manuals

Toyota Tacoma 2015-2018 Service Manual: TC and CG Terminal Circuit

DESCRIPTION

DTC output mode is set by connecting terminals TC and CG of the DLC3.

The DTCs are displayed by blinking the SRS warning light.

HINT:

  • Make sure that DTCs which relate to the CAN communication system are not output. If any of these DTCs are output, check the CAN communication system (See page ). The DTC output mode signal is transmitted through the CAN to an ECU ).
  • The DTC output mode signal is transmitted through the CAN to an ECU including the airbag sensor assembly. Thus if no systems enter DTC output mode, the ECM may have a malfunction.
  • When a warning light keeps blinking, a short to ground in the wiring of terminal TC of the DLC3 or an internal ground short in each ECU is suspected.

WIRING DIAGRAM

PROCEDURE

PROCEDURE

1.

CHECK HARNESS AND CONNECTOR (DLC3 - ECM)

Text in Illustration

*A

for 2GR-FKS

*B

for 2TR-FE

*a

DLC3

*b

Front view of wire harness connector

(to ECM)

(a) Turn the ignition switch off.

(b) Disconnect the connector from the ECM.

(c) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

for 2GR-FKS

Tester Connection

Condition

Specified Condition

D4-13 (TC) - E14-20 (TC)

Always

Below 1 Ω

for 2TR-FE

Tester Connection

Condition

Specified Condition

D4-13 (TC) - E21-19 (TC)

Always

Below 1 Ω

NG

REPAIR OR REPLACE HARNESS, ECU OR CONNECTOR

OK

2.

CHECK HARNESS AND CONNECTOR (CG OF DLC3 - BODY GROUND)

(a) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection

Condition

Specified Condition

D4-4 (CG) - Body ground

Always

Below 1 Ω

Text in Illustration

*a

DLC3

NG

REPAIR OR REPLACE HARNESS, ECU OR CONNECTOR

OK

3.

CHECK HARNESS AND CONNECTOR (TC CIRCUIT OF ECM)

(a) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

for 2GR-FKS

Tester Connection

Condition

Specified Condition

E14-20 (TC) - Body ground

Always

1 MΩ or higher

for 2TR-FE

Tester Connection

Condition

Specified Condition

E21-19 (TC) - Body ground

Always

1 MΩ or higher

NG

REPAIR OR REPLACE HARNESS, ECU OR CONNECTOR

OK

4.

CHECK DTC

SST: 09843-18040

(a) Using SST, connect terminals TC and CG of the DLC3.

NOTICE:

Connect the terminals to the correct positions to avoid a malfunction.

Text in Illustration

*a

DLC3

Result

Result

Proceed to

DTC output mode is set in each ECU.

A

DTC output mode is not set in ECM. (for 2GR-FKS)

B

DTC output mode is not set in ECM. (for 2TR-FE)

C

DTC output mode is not set in airbag sensor assembly.

D

A

USE SIMULATION METHOD TO CHECK

B

REPLACE ECM

C

REPLACE ECM

D

REPLACE AIRBAG SENSOR ASSEMBLY

SRS Warning Light Remains ON
DESCRIPTION The SRS warning light is located on the combination meter assembly. When the SRS condition is normal, the SRS warning light illuminates for approximately 6 seconds after the ignition s ...

Center Airbag Sensor Assembly
Components COMPONENTS ILLUSTRATION On-vehicle Inspection ON-VEHICLE INSPECTION PROCEDURE 1. INSPECT AIRBAG SENSOR ASSEMBLY (for Vehicle not Involved in Collision) (a) Perform a diagnostic ...

Other materials:

System Description
SYSTEM DESCRIPTION PRE-COLLISION SYSTEM DESCRIPTION (a) The pre-collision system uses the pre-collision warning control, pre-collision brake assist control and pre-collision braking control to help avoid a collision or reduce the impact if it determines that the possibility of a collision is h ...

Diameter of the Tire is not Uniform (C1337)
DESCRIPTION The skid control ECU (brake actuator assembly) measures the speed of each wheel by receiving signals from the speed sensors. These signals are used for recognizing whether all 4 wheels are operating properly. Therefore, all wheel signals must indicate the same speed. D ...

Installation
INSTALLATION PROCEDURE 1. INSTALL REAR BUMPER ASSEMBLY (a) Using an engine lifter or equivalent, engage the 2 pins to install the rear bumper assembly. Text in Illustration *a Pin - - NOTICE: Using plate lift attachments or equiv ...

© 2011-2021 Copyright www.ttguide.net