Lexus ES: 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 and backward. The telescopic position sensor (Hall IC) in the telescopic motor (steering column assembly) detects the sliding position of the steering column assembly in the forward and backward directions and sends a signal to the multiplex tilt and telescopic ECU based on that sliding amount.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area |
|---|---|---|---|
| B261196 | Telescopic Position Sensor or Telescopic Motor Circuit Component Internal Failure | Telescopic operation stops within the operation range while operating. |
|
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 (TELESCOPIC 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 column contracts and extends.
(f) Enter the following menus: Body Electrical / Tilt & Telescopic / Active Test.
Body Electrical > Tilt&Telescopic > Active Test| Tester Display |
|---|
| Telescopic Motor |
| Tester Display | Measurement Item | Control Range |
|---|---|---|
| Telescopic Motor | Telescopic Operation | LONG/SHORT |
OK:
The steering column contracts and extends.
| NG | .gif) | GO TO STEP 6 |
|
.gif)
| 2. | CHECK HARNESS AND CONNECTOR (MULTIPLEX TILT AND TELESCOPIC ECU - TELESCOPIC POSITION SENSOR (STEERING COLUMN ASSEMBLY)) |
(a) Disconnect the G63 multiplex tilt and telescopic ECU connector.
(b) Disconnect the G76 telescopic 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 |
|---|---|---|
| G63-14 (VCE) - G76-6 (VCE) | Always | Below 1 Ω |
| G63-15 (TES) - G76-7 (TES) | Always | Below 1 Ω |
| G63-17 (E2) - G76-8 (E2) | Always | Below 1 Ω |
| G63-14 (VCE) or G76-6 (VCE) - Body ground | Always | 10 kΩ or higher |
| G63-15 (TES) or G76-7 (TES) - Body ground | Always | 10 kΩ or higher |
| G63-17 (E2) or G76-8 (E2) - Body ground | Always | 10 kΩ or higher |
| NG | | REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
| 3. | CHECK HARNESS AND CONNECTOR (MULTIPLEX TILT AND TELESCOPIC ECU - BODY GROUND) |
| (a) Disconnect the G63 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 |
|---|---|---|
| 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 |
|
| 4. | CHECK MULTIPLEX TILT AND TELESCOPIC ECU (VCE, TES TERMINAL VOLTAGE) |
| (a) Reconnect the G63 multiplex tilt and telescopic ECU connector. |
|
(b) Disconnect the G76 telescopic 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 |
|---|---|---|
| G63-14 (VCE) - G63-17 (E2) | Power switch on (IG) | 8 to 14 V |
| G63-15 (TES) - G63-17 (E2) | Power switch on (IG) | 8 to 14 V |
| NG | | REPLACE MULTIPLEX TILT AND TELESCOPIC ECU |
|
| 5. | CHECK TELESCOPIC POSITION SENSOR (STEERING COLUMN ASSEMBLY) |
| (a) Reconnect the G63 multiplex tilt and telescopic ECU connector. |
|
(b) Reconnect the G76 telescopic 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 |
|---|---|---|
| G76-7 (TES) - G76-8 (E2) | Steering column contracting or extending | Pulse generation High: 8 to 14 V Low: Below 1 V |
| OK | | REPLACE MULTIPLEX TILT AND TELESCOPIC ECU |
| NG | | REPLACE STEERING COLUMN ASSEMBLY |
.gif)
| 6. | CHECK HARNESS AND CONNECTOR (MULTIPLEX TILT AND TELESCOPIC ECU - AUXILIARY BATTERY) |
| (a) Disconnect the G63 multiplex tilt and telescopic ECU connector. |
|
(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 |
|
| 7. | CHECK HARNESS AND CONNECTOR (MULTIPLEX TILT AND TELESCOPIC ECU - BODY GROUND) |
| (a) Disconnect the G63 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 |
|---|---|---|
| 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 |
|
| 8. | CHECK HARNESS AND CONNECTOR (MULTIPLEX TILT AND TELESCOPIC ECU - TELESCOPIC MOTOR (STEERING COLUMN ASSEMBLY)) |
(a) Disconnect the G63 multiplex tilt and telescopic ECU connector.
(b) Disconnect the G76 telescopic 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 |
|---|---|---|
| G63-6 (TEM+) - G76-4 (TEM+) | Always | Below 1 Ω |
| G63-19 (TEM-) - G76-1 (TEM-) | Always | Below 1 Ω |
| G63-6 (TEM+) or G76-4 (TEM+) - Body ground | Always | 10 kΩ or higher |
| G63-19 (TEM-) or G76-1 (TEM-) - Body ground | Always | 10 kΩ or higher |
| NG | | REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
| 9. | CHECK TELESCOPIC MOTOR (STEERING COLUMN ASSEMBLY) |
| (a) Disconnect the G76 telescopic motor (steering column assembly) connector. |
|
(b) Apply 12 V auxiliary battery voltage to the telescopic motor (steering column assembly) connector. Then check the steering column telescopic operation.
OK:
| Measurement Condition | Specified Condition |
|---|---|
| The steering column contracts. |
| The steering column extends. |
| OK | | REPLACE MULTIPLEX TILT AND TELESCOPIC ECU |
| NG | | REPLACE STEERING COLUMN ASSEMBLY |
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