Lexus IS250 · Service Manual STEERING

B2610

Diagnostic trouble codes

DESCRIPTION

The tilt motor is operated by the power source voltage supplied from the multiplex tilt & telescopic ECU and makes the steering column tilt up and down. The tilt position sensor (hall IC) in the tilt motor detects the tilt angle of the steering column and outputs a signal to the CPU based on that tilt.
F003815E01

HINT:
Limit positions can be confirmed on the screen of the intelligent tester.

DTC No.
 Detection Item
 Trouble Area
B2610
 Tilt operation stops within the operation range while operating.
  1. Wire harness or connector
  2. Tilt position sensor or tilt motor
  3. Multiplex tilt & telescopic ECU

WIRING DIAGRAM

C113487E01

INSPECTION PROCEDURE


1. PERFORM ACTIVE TEST BY INTELLIGENT TESTER

  1. C106468E01
    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 "TILT", and perform the ACTIVE TEST using the intelligent tester.

  1. Check that the steering wheel tilts up (down) when the ACTIVE TEST is carried out.

    OK:
    Steering wheel tilts up (down).



 OK
Go to step 4
NG


2. CHECK HARNESS AND CONNECTOR (MULTIPLEX TILT & TELESCOPIC ECU - TILT MOTOR)

  1. C106478E07
    Disconnect the J28 connector from the multiplex tilt & telescopic ECU.

  1. Disconnect the J22 connector from the tilt motor.

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

    Standard resistance:
    Tester connection
    (Terminal No.)
    		 Condition
    		 Specified value
    TIM+ (J28-10) - TIM+ (J22-1)
    		 Always
    		 Below 1 Ω
    TIM- (J28-1) - TIM- (J22-2)
    		 Always
    		 Below 1 Ω
    TIM+ (J28-10) - Body ground
    		 Always
    		 10 kΩ or higher
    TIM- (J28-1) - Body ground
    		 Always
    		 10 kΩ or higher



NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


3. INSPECT TILT MOTOR

  1. C106479E01
    Connect the positive battery terminal to terminal TIM+ and the negative battery terminal to terminal TIM- of the tilt motor connector. Then confirm that the steering wheel tilts up.

    OK:
    Steering wheel tilts up.

  1. Connect the negative battery terminal to terminal TIM+ and the positive battery terminal to terminal TIM- of the tilt motor connector. Then confirm that the steering wheel tilts down.

    OK:
    Steering wheel tilts down.



 NG
REPLACE STEERING COLUMN ASSEMBLY
OK

REPLACE MULTIPLEX TILT & TELESCOPIC ECU

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

  1. C106478E08
    Disconnect the J28 connector from the multiplex tilt & telescopic ECU.

  1. Disconnect the J22 connector from the tilt motor.

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

    Standard resistance:
    Tester connection
    (Terminal No.)
    		 Condition
    		 Specified value
    VCI (J28-6) - VCI (J22-4)
    		 Always
    		 Below 1 Ω
    TIS (J28-7) - TIS (J22-5)
    		 Always
    		 Below 1 Ω
    E1 (J28-17) - E1 (J22-6)
    		 Always
    		 Below 1 Ω
    VCI (J28-6) - Body ground
    		 Always
    		 10 kΩ or higher
    TIS (J28-7) - Body ground
    		 Always
    		 10 kΩ or higher
    E1 (J28-17) - Body ground
    		 Always
    		 10 kΩ or higher



NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


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

  1. C106463E35
    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


6. INSPECT MULTIPLEX TILT & TELESCOPIC ECU (VCI, TIS TERMINAL VOLTAGE)

  1. C106464E15
    Reconnect the J28 connector to the multiplex tilt & telescopic ECU.

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

    Standard voltage:
    Tester connection
    (Terminal No.)
    		 Condition
    		 Specified value
    TIS (J28-7) - E1 (J28-17)
    		 Steering tilts up or tilts down
    		 8 to 16 V (Pulse HI)
    Below 1 V (Pulse LOW)



 NG
REPLACE MULTIPLEX TILT & TELESCOPIC ECU
OK


7. INSPECT TILT POSITION SENSOR

  1. F044882E04
    Reconnect the J22 connector to the tilt motor.

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

    Standard voltage:
    Tester connection
    (Terminal No.)
    		 Condition
    		 Specified value
    VCI (J22-4) - E1 (J22-6)
    		 Engine switch on (IG)
    		 8 to 16 V
    TIS (J22-5) - E1 (J22-6)
    		 Engine switch on (IG)
    		 8 to 16 V



NG
REPLACE STEERING COLUMN ASSEMBLY
OK

REPLACE MULTIPLEX TILT & TELESCOPIC ECU


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