Toyota Tundra (2015 year). Manual — part 215
Last Modified: 9-16-2014
6.6 D
Doc ID: RM000005PVB000X
Model Year: 2015
Model: Tundra
Prod Date Range: [08/2014 - ]
Title: BRAKE CONTROL: TRAILER BRAKE CONTROL SYSTEM: DIAGNOSIS SYSTEM; 2015 MY Tundra [08/2014 -
]
DIAGNOSIS SYSTEM
1. DESCRIPTION
When troubleshooting a vehicle with the diagnosis system, the only difference from the usual troubleshooting
procedure is connecting the Techstream to the vehicle and reading various data output from the vehicle's trailer
brake control ECU (brake control with bracket relay).
The trailer brake control ECU (brake control with bracket relay) records DTCs when it detects a malfunction in
itself or in its circuits.
To check the DTCs, connect the Techstream to the DLC3 on the vehicle. The Techstream enables you to clear the
DTCs, activate the various actuators, and check the Data List.
(a) Check the battery voltage.
Standard voltage:
11 to 14 V
If the voltage is below 11 V, recharge the battery before proceeding to the next step.
(b) Check the DLC3
.
2. DIAGNOSIS
(a) When a malfunction occurs in the trailer brake control system, a warning is displayed on the multi-
information display.
BRAKE CONTROL: TRAILER BRAKE CONTROL SYSTEM: DIA...
Last Modified: 9-16-2014
6.6 D
Doc ID: RM000005PVC000X
Model Year: 2015
Model: Tundra
Prod Date Range: [08/2014 - ]
Title: BRAKE CONTROL: TRAILER BRAKE CONTROL SYSTEM: DTC CHECK / CLEAR; 2015 MY Tundra [08/2014 -
]
DTC CHECK / CLEAR
1. DTC CHECK/CLEAR
(a) Check for DTCs.
(1) Connect the Techstream to the DLC3.
(2) Turn the ignition switch to ON.
(3) Turn the Techstream on.
(4) Read the DTCs following the prompts on the Techstream. Enter the following menus: Chassis / Trailer
Brake Controller / Trouble Codes.
.
(6) Following the Techstream display, check the "DTC" and "DTC ODO" data in the Data List
.
HINT:
Up to 5 "DTC" and "DTC ODO" data are stored.
(b) Clear the DTCs.
(1) Connect the Techstream to the DLC3.
(2) Turn the ignition switch to ON.
(3) Turn the Techstream on.
(4) Operate the Techstream to clear the codes. Enter the following menus: Chassis / Trailer Brake
Controller / Trouble Codes.
(5) According to the display on the Techstream, select the trouble code data display with the clear button.
BRAKE CONTROL: TRAILER BRAKE CONTROL SYSTEM: DTC...
Last Modified: 9-16-2014
6.6 U
Doc ID: RM000001DX0040X
Model Year: 2015
Model: Tundra
Prod Date Range: [08/2014 - ]
Title: BRAKE CONTROL: TRAILER BRAKE CONTROL SYSTEM: FAIL-SAFE CHART; 2015 MY Tundra [08/2014 -
]
FAIL-SAFE CHART
1. FAIL-SAFE OPERATION CHART
DTC
CODE
DETECTION ITEM
GAIN
VALUE
SETTING
OUTPUT WHEN
BRAKE PEDAL
OPERATED
OUTPUT WHEN MANUAL
TRAILER BRAKE OUTPUT
SLIDER OPERATED
WARNING
C14A0 Slider Switch Circuit
○
○
X
Displayed
C14A1 Gain Rocker Switch (+) Circuit
X
○
○
Displayed
C14A2 Gain Rocker Switch (-) Circuit
X
○
○
Displayed
C14A3
Type Push Button Switch
Circuit
○
○
○
Displayed
C14A4
Output Circuit Temperature
High / Over Current
X
X
X
Displayed
C14A5
Output Circuit Unintended
Current
X
X
X
Displayed
C14A6
Output Circuit Negative
Voltage
X
X
X
Displayed
C14A7 ECU Malfunction
X
X
X
Displayed
U0101 Lost Communication with TCM
○
○
○
Displayed
U0129
Lost Communication with
Brake System Control Module
○
X
○
Displayed
U0155
Lost Communication With
Instrument Panel Cluster
(IPC) Control Module
X
X
X
Displayed
HINT:
○: Function continues
X: Function prohibited
BRAKE CONTROL: TRAILER BRAKE CONTROL SYSTEM: FAIL...
Last Modified: 9-16-2014
6.6 U
Doc ID: RM000005PVE000X
Model Year: 2015
Model: Tundra
Prod Date Range: [08/2014 - ]
Title: BRAKE CONTROL: TRAILER BRAKE CONTROL SYSTEM: DATA LIST / ACTIVE TEST; 2015 MY Tundra
[08/2014 - ]
DATA LIST / ACTIVE TEST
1. DATA LIST
HINT:
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Turn the Techstream on.
(d) Enter the following menus: Chassis / Trailer Brake Controller / Data List.
(e) According to the display on the Techstream, read the Data List.
Trailer Brake Controller:
TESTER DISPLAY
MEASUREMENT ITEM/RANGE
NORMAL CONDITION
DIAGNOSTIC NOTE
Slider Switch
Position Sensor
#1
Slider switch position sensor #1 /
min.: 0%, max.: 100%
Actual manual trailer brake output
slider position
-
Slider Switch
Position Sensor
#2
Slider switch position sensor #2 /
min.: 0%, max.: 100%
Actual manual trailer brake output
slider position
-
Gain Rocker
Switch (+)
GAIN (+) selection button / ON or
OFF
ON: GAIN (+) selection button ON
OFF: GAIN (+) selection button OFF
-
Gain Rocker
Switch (-)
GAIN (-) selection button / ON or
OFF
ON: GAIN (-) selection button ON
OFF: GAIN (-) selection button OFF
-
Type Push Button
Switch
Trailer brake TYPE selection
button / ON or OFF
ON: Trailer brake TYPE selection
button ON
OFF: Trailer brake TYPE selection
button OFF
-
Shift Position
Shift Position information / D, R,
Fail, Undetermined
Actual shift Position
-
Brake Fluid
Pressure
Brake fluid pressure value / min.:
0.000 Mpa max.: 786.420 Mpa
-
-
TBC Output
Voltage
TBC output voltage / min.: 0.000
V, max.: 18.000 V
-
-
Command Value
Trailer Brake
Output
Command value trailer brake
output / min.: 0.000%, max.:
100.000%
-
-
BRAKE CONTROL: TRAILER BRAKE CONTROL SYSTEM: DATA...
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