Lexus IS250 · Service Manual STEERING

B2611

Diagnostic trouble codes

DESCRIPTION

The telescopic motor is operated by the power source voltage supplied from the multiplex tilt & 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 CPU based on that sliding amount.
C110862E01

HINT:
Limit positions can be confirmed on the screen of the intelligent tester.
DTC No.
 Detection Item
 Trouble Area
B2611
 Telescopic operation stops within the operation range while operating.
  1. Wire harness or connector
  2. Telescopic position sensor or telescopic motor
  3. Multiplex tilt & telescopic ECU


WIRING DIAGRAM

C113487E02

INSPECTION PROCEDURE

HINT:
The wire harness between the multiplex tilt & telescopic ECU and telescopic motor is provided with the steering column assembly.


1. PERFORM ACTIVE TEST BY INTELLIGENT TESTER

  1. C106469E01
    Connect the intelligent tester to the DLC3.

  1. Turn the engine switch on (IG) and turn the intelligent tester on.

  1. Select "TILT & TELESCO".

  1. Select "TELESCO", and perform the ACTIVE TEST using the intelligent tester.

  1. Check that the steering column contracts (extends) when the ACTIVE TEST is carried out.

    OK:
    Steering column contracts (extends).



 OK
Go to step 3
NG


2. INSPECT TELESCOPIC MOTOR

  1. C106462E05
    Disconnect connector A from the multiplex tilt & telescopic ECU.

  1. Connect the positive battery terminal to terminal TEM+ and the negative battery terminal to terminal TEM- of the telescopic motor connector. Then confirm that the steering column contracts.

    OK:
    Steering column contracts.

  1. Connect the negative battery terminal to terminal TEM+ and the positive battery terminal to terminal TEM- of the telescopic motor connector. Then confirm that the steering column extends.

    OK:
    Steering column extends.



 NG
REPLACE STEERING COLUMN ASSEMBLY
OK

REPLACE MULTIPLEX TILT & TELESCOPIC ECU

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

  1. C106464E11
    Measure the voltage according to the value(s) in the table below.

    Standard voltage:
    Tester connection
    		 Condition
    		 Specified value
    VCE - E2
    		 Engine switch on (IG)
    		 8 to 16 V



NG
Go to step 5
OK


4. INSPECT TELESCOPIC POSITION SENSOR

  1. C106464E12
    Measure the voltage according to the value(s) in the table below.

    Standard voltage:
    Tester connection
    		 Condition
    		 Specified value
    TES - E2
    		 Telescopic steering contracts or extends
    		 8 to 16 V (Pulse HI)
    Below 1 V (Pulse LOW)



 NG
REPLACE STEERING COLUMN ASSEMBLY
OK

REPLACE MULTIPLEX TILT & TELESCOPIC ECU

5. CHECK HARNESS AND CONNECTOR (MULTIPLEX TILT & TELESCOPIC ECU - BODY GROUND (VCE CIRCUIT))

  1. C106462E10
    Disconnect connector A from the multiplex tilt & telescopic ECU.

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

    Standard resistance:
    Tester connection
    		 Condition
    		 Specified value
    VCE - Body ground
    		 Always
    		 10 kΩ or higher



NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


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

  1. C106463E35
    Disconnect the J28 connector from the multiplex tilt & telescopic ECU.

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

    Standard resistance:
    Tester connection
    (Terminal No.)
    		 Condition
    		 Specified value
    GND (J28-11) - Body ground
    		 Always
    		 Below 1 Ω



NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

REPLACE MULTIPLEX TILT & TELESCOPIC ECU


← B2610B2620 →