Toyota Tundra (2015 year). Manual - part 214

A

NEXT

NEXT

NEXT

NEXT

B

GO TO STEP 5

C

GO TO STEP 6

4.

DIAGNOSTIC TROUBLE CODE CHART

(a) Proceed to Diagnostic Trouble Code Chart 

 

.

NEXT

GO TO STEP 7

5.

SYMPTOM SIMULATION

(a) Proceed to How to Proceed with Troubleshooting 

 

.

6.

CIRCUIT INSPECTION*

7.

IDENTIFICATION OF PROBLEM

8.

REPAIR OR REPLACEMENT

BRAKE CONTROL: TRAILER BRAKE CONTROL SYSTEM: HOW...

9.

CONFIRMATION TEST*

NEXT

END

BRAKE CONTROL: TRAILER BRAKE CONTROL SYSTEM: HOW...

Last Modified: 9-16-2014

6.6 U

Doc ID: RM000001MXB014X

Model Year: 2015

Model: Tundra

Prod Date Range: [08/2014 -           ]

Title: BRAKE CONTROL: TRAILER BRAKE CONTROL SYSTEM: TERMINALS OF ECU; 2015 MY Tundra [08/2014 -

       ]

TERMINALS OF ECU

1. TERMINALS OF ECU

Text in Illustration

*a

Component without harness connected

(Trailer Brake Control ECU [Brake Control with Bracket Relay])

-

-

TERMINAL NO. (SYMBOL)

TERMINAL DESCRIPTION

1

- (Not used)

2 (IG)

IG power source

3 (TAIL)

TAIL signal

4 (CANH)

CAN communication line H

5 (GND)

Trailer brake control ECU (Brake control with bracket relay) ground

6 (ILL-)

Illumination signal

7 (BRK)

Trailer brake output

8 (+B)

Power supply (from battery)

9 (STOP)

Stop light switch signal input

10 (CANL)

CAN communication line L

2. TERMINAL INSPECTION

(a) Disconnect the J156 trailer brake control ECU (brake control with bracket relay) connector and measure

the voltage or resistance on the wire harness side.

BRAKE CONTROL: TRAILER BRAKE CONTROL SYSTEM: TER...

Text in Illustration

*a

-

-

HINT:

Voltage cannot be measured with the connector connected to the trailer brake control ECU (brake control

with bracket relay) as the connector is watertight.

TERMINAL NO.

(SYMBOL)

WIRING

COLOR

TERMINAL DESCRIPTION

CONDITION

SPECIFIED

CONDITION

J156-2 (IG)- Body

ground

Y - Body

ground

IG power source

Ignition switch

ON

11 to 14 V

J156-5 (GND)-

Body ground

W-B - Body

ground

Trailer brake control ECU (Brake

control with bracket relay) ground

Always

Below 1 Ω

J156-8 (+B)- Body

ground

B - Body

ground

Power supply (from battery)

Always

11 to 14 V

J156-9 (STOP)-

Body ground

BR - Body

ground

Stop light switch signal input

Brake pedal

depressed

8 to 14 V

Brake pedal

released

Below 1.5 V

BRAKE CONTROL: TRAILER BRAKE CONTROL SYSTEM: TER...