Lexus ES manuals

Lexus ES: Tilt Position Sensor or Tilt Motor Circuit Component Internal Failure (B261096)

Lexus ES (XZ10) Service Manual / Steering / Steering Column / Power Tilt And Power Telescopic Steering Column System (for Hv Model) / Tilt Position Sensor or Tilt Motor Circuit Component Internal Failure (B261096)

DESCRIPTION

The tilt motor (steering column assembly) is operated by the power source voltage supplied from the multiplex tilt and telescopic ECU and tilts the steering column up and down. The tilt position sensor (Hall IC) in the tilt motor (steering column assembly) detects the tilt angle of the steering column assembly and sends a signal to the multiplex tilt and telescopic ECU based on that angle.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

B261096

Tilt Position Sensor or Tilt Motor Circuit Component Internal Failure

Tilt operation stops within the operation range while operating.
  • TI&TE Fuse
  • Tilt position sensor (steering column assembly)
  • Tilt motor (steering column assembly)
  • Harness or connector
  • Multiplex tilt and telescopic ECU

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

Inspect the fuses for circuits related to this system before performing the following procedure.

PROCEDURE

1.

PERFORM ACTIVE TEST USING TECHSTREAM (TILT MOTOR)

(a) Turn the power switch off.

(b) Connect the Techstream to the DLC3.

(c) Turn the power switch on (IG).

(d) Turn the Techstream on.

(e) Check that the steering wheel tilts up and down.

(f) Enter the following menus: Body Electrical / Tilt & Telescopic / Active Test.

Body Electrical > Tilt&Telescopic > Active Test

Tester Display

Tilt Motor
Body Electrical > Tilt&Telescopic > Active Test

Tester Display

Measurement Item

Control Range

Tilt Motor

Tilt operation

UP/DOWN

OK:

The steering wheel tilts up and down.

NG

GO TO STEP 6

OK

2.

CHECK HARNESS AND CONNECTOR (MULTIPLEX TILT AND TELESCOPIC ECU - TILT POSITION SENSOR (STEERING COLUMN ASSEMBLY))

(a) Disconnect the G63 multiplex tilt and telescopic ECU connector.

(b) Disconnect the G75 tilt motor (steering column assembly) connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

G63-13 (VCI) - G75-4 (VCI)

Always

Below 1 Ω

G63-16 (TIS) - G75-5 (TIS)

Always

Below 1 Ω

G63-4 (E1) -G75-6 (E1)

Always

Below 1 Ω

G63-13 (VCI) or G75-4 (VCI) - Body ground

Always

10 kΩ or higher

G63-16 (TIS) or G75-5 (TIS) - Body ground

Always

10 kΩ or higher

G63-4 (E1) or G75-6 (E1) - Body ground

Always

10 kΩ or higher
NG

REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

3.

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

(a) Disconnect the G63 multiplex tilt and telescopic ECU connector.

*a

Front view of wire harness connector

(to 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

G63-1 (GND) - Body ground

Always

Below 1 Ω

G63-8 (GND2) - Body ground

Always

Below 1 Ω
NG

REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

4.

CHECK MULTIPLEX TILT AND TELESCOPIC ECU (VCI, TIS TERMINAL VOLTAGE)

(a) Reconnect the G63 multiplex tilt and telescopic ECU connector.

*a

Component with harness connected

(Multiplex Tilt and Telescopic ECU)

(b) Disconnect the G75 tilt motor (steering column assembly) connector.

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

Standard Voltage:

Tester Connection

Condition

Specified Condition

G63-13 (VCI) - G63-4 (E1)

Power switch on (IG)

8 to 14 V

G63-16 (TIS) - G63-4 (E1)

Power switch on (IG)

8 to 14 V
NG

REPLACE MULTIPLEX TILT AND TELESCOPIC ECU

OK

5.

CHECK TILT POSITION SENSOR (STEERING COLUMN ASSEMBLY)

(a) Reconnect the G63 multiplex tilt and telescopic ECU connector.

*a

Component with harness connected

(Tilt Motor (Steering Column Assembly))

(b) Reconnect the G75 tilt motor (steering column assembly) connector.

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

Standard Voltage:

Tester Connection

Condition

Specified Condition

G75-5 (TIS) - G75-6 (E1)

Steering wheel tilting up or tilting down

Pulse generation

High: 8 to 14 V

Low: Below 1 V
OK

REPLACE MULTIPLEX TILT AND TELESCOPIC ECU

NG

REPLACE STEERING COLUMN ASSEMBLY

6.

CHECK HARNESS AND CONNECTOR (MULTIPLEX TILT AND TELESCOPIC ECU - AUXILIARY BATTERY)

(a) Disconnect the G63 multiplex tilt and telescopic ECU connector.

*a

Front view of wire harness connector

(to Multiplex Tilt and Telescopic ECU)

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

Standard Voltage:

Tester Connection

Condition

Specified Condition

G63-2 (+B) - Body ground

Power switch off

11 to 14 V
NG

REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

7.

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

(a) Disconnect the G63 multiplex tilt and telescopic ECU connector.

*a

Front view of wire harness connector

(to 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

G63-1 (GND) - Body ground

Always

Below 1 Ω

G63-8 (GND2) - Body ground

Always

Below 1 Ω
NG

REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

8.

CHECK HARNESS AND CONNECTOR (MULTIPLEX TILT AND TELESCOPIC ECU - TILT MOTOR (STEERING COLUMN ASSEMBLY))

(a) Disconnect the G63 multiplex tilt and telescopic ECU connector.

(b) Disconnect the G75 tilt motor (steering column assembly) connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

G63-7 (TIM+) - G75-1 (TIM+)

Always

Below 1 Ω

G63-20 (TIM-) - G75-2 (TIM-)

Always

Below 1 Ω

G63-7 (TIM+) or G75-1 (TIM+) - Body ground

Always

10 kΩ or higher

G63-20 (TIM-) or G75-2 (TIM-) - Body ground

Always

10 kΩ or higher
NG

REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

9.

CHECK TILT MOTOR (STEERING COLUMN ASSEMBLY)

(a) Disconnect the G75 tilt motor (steering column assembly) connector.

*a

Component without harness connected

(Tilt Motor (Steering Column Assembly))

(b) Apply 12 V auxiliary battery voltage to the tilt motor (steering column assembly) connector. Then check the steering wheel tilt operation.

OK:

Measurement Condition

Specified Condition
  • 12 V auxiliary battery positive (+) lead → G75-1 (TIM+)
  • 12 V auxiliary battery negative (-) lead → G75-2 (TIM-)

The steering wheel tilts up.
  • 12 V auxiliary battery positive (+) lead → G75-2 (TIM-)
  • 12 V auxiliary battery negative (-) lead → G75-1 (TIM+)

The steering wheel tilts down.
OK

REPLACE MULTIPLEX TILT AND TELESCOPIC ECU

NG

REPLACE STEERING COLUMN ASSEMBLY

READ NEXT:

 Telescopic Position Sensor or Telescopic Motor Circuit Component Internal Failure (B261196)

DESCRIPTION The telescopic motor (steering column assembly) is operated by the power source voltage supplied from the multiplex tilt and telescopic ECU and slides the steering column assembly forward

 ECU Power Source Circuit System Voltage Low (B2620A2)

DESCRIPTION The ECU power source circuit supplies positive (+) voltage to the multiplex tilt and telescopic ECU. DTC No. Detection Item DTC Detection Condition Trouble Area B2620A2 ECU

 Lost Communication with Body Control Module "B" Missing Message (U014287,U015587,U020887)

DESCRIPTION The multiplex tilt and telescopic ECU receives signals from the main body ECU (multiplex network body ECU), combination meter assembly and position control ECU assembly (driver seat) via C

SEE MORE:

 Inspection

INSPECTION PROCEDURE 1. INSPECT HYBRID BATTERY TERMINAL BLOCK (a) Measure the resistance according to the value(s) in the table below. Standard Resistance: Tester Connection Condition Specified Condition Hybrid Battery Terminal Block Always Below 1 Ω If the result is not as sp

 Voice Recognition Microphone Disconnected (B1579)

DESCRIPTION The radio receiver assembly and telephone microphone assembly are connected to each other using the microphone connection detection signal lines. This DTC is stored when a microphone connection detection signal line is disconnected. DTC No. Detection Item DTC Detection Condition

© 2016-2024 Copyright www.lexguide.net