STEERING COLUMN: POWER TILT AND POWER TELESCOPIC STEERING COLUMN SYSTEM: DESCRIPTION (2008 Sequoia)

Last Modified: 11-29-2007		1.6 C
Service Category: Steering	Section: Steering Column
Model Year: 2008	Model: Sequoia	Doc ID: RM000000XZA01GX
Title: STEERING COLUMN: POWER TILT AND POWER TELESCOPIC STEERING COLUMN SYSTEM: DESCRIPTION (2008 Sequoia)

DTC

B2611

Telescopic Position Sensor or Telescopic Motor Circuit Malfunction

DESCRIPTION

The telescopic motor is operated by the power source voltage supplied from the multiplex tilt and telescopic ECU and slides the steering column forward and backward. The telescopic position sensor (Hall IC) in the telescopic motor detects the sliding position in the forward and backward directions of the steering column and outputs a signal to the multiplex tilt and telescopic ECU based on that sliding amount.

HINT:

Limit positions can be confirmed on the screen of the Techstream.

DTC Code	Detection Condition	Trouble Area
B2611	Telescopic operation stops within the operation range while operating.	Harness or connector Telescopic position sensor or telescopic motor Multiplex tilt and telescopic ECU

WIRING DIAGRAM

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 telesco long/short function operates normally.

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
The steering column contracts (extends).	B

2.	INSPECT TELESCOPIC MOTOR

(a) Disconnect connector A from the multiplex tilt and telescopic ECU.

(b) Connect the positive (+) battery terminal to terminal A-2 (TEM+) and the negative (-) battery terminal to terminal A-6 (TEM-) of the telescopic motor connector. Then confirm that the steering column contracts.

OK:

The steering column contracts.

(c) Connect the negative (-) battery terminal to terminal A-2 (TEM+) and the positive (+) battery terminal to terminal A-6 (TEM-) of the telescopic motor connector. Then confirm that the steering column extends.

OK:

The steering column extends.

3.	INSPECT MULTIPLEX TILT AND TELESCOPIC ECU (VCE TERMINAL VOLTAGE)

(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

4.	INSPECT 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	8 to 16 V (Pulse HI)
A-4 (TES) - A-5 (E2)	Telescopic steering contracted or extended	Below 1 V (Pulse LOW)

5.	CHECK HARNESS AND CONNECTOR (MULTIPLEX TILT AND TELESCOPIC ECU - TELESCOPIC POSITION SENSOR)

(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

6.	CHECK HARNESS AND CONNECTOR (MULTIPLEX TILT AND TELESCOPIC ECU - BODY GROUND)

(a) Disconnect the H57 multiplex tilt and telescopic ECU connector.

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

Standard Resistance:

Tester Connection	Condition	Specified Condition
H57-11 (GND) - Body ground	Always	Below 1 Ω