Toyota Tundra (2015 year). Manual — part 2780
INSPECTION PROCEDURE
HINT:
The wire harness between the multiplex tilt and telescopic ECU and telescopic motor is provided with the
steering column assembly.
PROCEDURE
1.
PERFORM ACTIVE TEST USING TECHSTREAM (TELESCO SHORT/LONG)
(a) Select the Active Test, use the Techstream to generate a
control command, and then check that the steering column
contracts and extends.
Tilt & Telescopic
TESTER
DISPLAY
TEST PART
CONTROL
RANGE
DIAGNOSTIC
NOTE
Telesco
operation
Telescopic
operation
Long / Short
-
Result
RESULT
PROCEED TO
The steering column does not contract (extend).
A
STEERING COLUMN: POWER TILT AND POWER TELESCOPIC ...
A
RESULT
PROCEED TO
The steering column contracts (extends).
B
B
GO TO STEP 3
2.
CHECK TELESCOPIC MOTOR
(a) Disconnect connector A from the multiplex tilt and telescopic
ECU.
(b) Apply 12 V battery voltage to the multiplex tilt and telescopic ECU connector. Then check the
steering wheel telescopic operation.
OK
MEASUREMENT CONDITION
SPECIFIED CONDITION
12 V battery positive (+) lead → Terminal A-2 (TEM+)
12 V battery negative (-) lead → Terminal A-6 (TEM-)
The steering column contracts.
12 V battery positive (+) lead → Terminal A-6 (TEM-)
12 V battery negative (-) lead → Terminal A-2 (TEM+)
The steering column extends
NG
REPLACE STEERING COLUMN ASSEMBLY
OK
REPLACE MULTIPLEX TILT AND TELESCOPIC ECU
3.
CHECK MULTIPLEX TILT AND TELESCOPIC ECU (VCE TERMINAL VOLTAGE)
STEERING COLUMN: POWER TILT AND POWER TELESCOPIC ...
OK
(a) Measure the voltage according to the value(s) in the table
below.
Standard Voltage:
TESTER CONNECTION SWITCH CONDITION SPECIFIED CONDITION
A-3 (VCE) - A-5 (E2)
Ignition switch ON
8 to 16 V
NG
GO TO STEP 5
4.
CHECK TELESCOPIC POSITION SENSOR
(a) Measure the voltage according to the value(s) in the table
below.
Standard Voltage:
TESTER
CONNECTION
CONDITION
SPECIFIED
CONDITION
A-4 (TES) - A-5
(E2)
Telescopic steering
contracted or extended
Pulse generation
High: 8 to 16 V
Low: Below 1 V
NG
REPLACE STEERING COLUMN ASSEMBLY
OK
REPLACE MULTIPLEX TILT AND TELESCOPIC ECU
5.
CHECK HARNESS AND CONNECTOR (MULTIPLEX TILT AND TELESCOPIC ECU -
TELESCOPIC POSITION SENSOR)
STEERING COLUMN: POWER TILT AND POWER TELESCOPIC ...
OK
(a) Disconnect connector A from the multiplex tilt and telescopic
ECU.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
TESTER CONNECTION
CONDITION
SPECIFIED CONDITION
A-3 (VCE) - Body ground
Always
10 kΩ or higher
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
6.
CHECK HARNESS AND CONNECTOR (MULTIPLEX TILT AND TELESCOPIC ECU - BODY
GROUND)
(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:
STEERING COLUMN: POWER TILT AND POWER TELESCOPIC ...
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