Toyota Tundra (2015 year). Manual — part 2689
Last Modified: 9-16-2014
6.6 C
Doc ID: RM000002VTP00QX
Model Year: 2015
Model: Tundra
Prod Date Range: [08/2014 - ]
Title: CAN COMMUNICATION: CAN COMMUNICATION SYSTEM: U1115; Lost Communication with Tilt and
Telescopic Module; 2015 MY Tundra [08/2014 - ]
DTC
U1115
Lost Communication with Tilt and Telescopic Module
DESCRIPTION
DTC
CODE
DTC DETECTION CONDITION
TROUBLE AREA
U1115
There is no communication from the multiplex
tilt and telescopic ECU.
Multiplex tilt and telescopic ECU CAN
branch wire or connector
Multiplex tilt and telescopic ECU
For vehicles with a seat memory.
WIRING DIAGRAM
CAN COMMUNICATION: CAN COMMUNICATION SYSTEM: U1115;...
NEXT
INSPECTION PROCEDURE
NOTICE:
Inspect the fuses for circuits related to this system before performing the following inspection procedure.
HINT:
Operating the ignition switch, any other switches or any doors triggers related ECU and sensor
communication with the CAN, which causes resistance variation.
PROCEDURE
1.
PRECAUTION
NOTICE:
After turning the ignition switch off, waiting time may be required before disconnecting the cable from the
battery terminal. Therefore, make sure to read the disconnecting the cable from the battery terminal notice
before proceeding with work
.
CAN COMMUNICATION: CAN COMMUNICATION SYSTEM: U1115;...
NEXT
OK
2.
DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL
(a) Disconnect the cable from the negative (-) battery terminal before measuring the resistances of
the CAN main wire and the CAN branch wire.
CAUTION:
Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the
SRS system.
NOTICE:
When disconnecting the cable, some systems need to be initialized after the cable is reconnected
.
3.
CHECK FOR OPEN IN CAN BUS WIRE (MULTIPLEX TILT AND TELESCOPIC ECU CAN
BRANCH WIRE)
(a) Disconnect the J47 multiplex tilt and telescopic ECU
connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
TESTER CONNECTION
SWITCH CONDITION
SPECIFIED CONDITION
J47-5 (CANH) - J47-14 (CANL)
Ignition switch off
54 to 69 Ω
Text in Illustration
*a
NG
REPAIR OR REPLACE MULTIPLEX TILT AND
TELESCOPIC ECU CAN BRANCH WIRE OR
CONNECTOR (CANH, CANL)
CAN COMMUNICATION: CAN COMMUNICATION SYSTEM: U1115;...
4.
CHECK HARNESS AND CONNECTOR (MULTIPLEX TILT AND TELESCOPIC ECU -
BATTERY AND BODY GROUND)
(a) Connect the cable to the negative (-) battery terminal.
NOTICE:
When disconnecting the cable, some systems need to be
initialized after the cable is reconnected
.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
TESTER CONNECTION
CONDITION
SPECIFIED CONDITION
J47-11 (GND) - Body ground
Always
Below 1 Ω
(c) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
TESTER CONNECTION
CONDITION
SPECIFIED CONDITION
J47-2 (+B) - Body ground
Always
11 to 14 V
J47-9 (ECUB) - Body ground
Always
11 to 14 V
J47-8 (IG) - Body ground
Ignition switch ON
11 to 14 V
Text in Illustration
*a
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK
REPLACE MULTIPLEX TILT AND TELESCOPIC ECU
CAN COMMUNICATION: CAN COMMUNICATION SYSTEM: U1115;...
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