- Tilt and telescopic manual switch
- Tilt and telescopic manual switch circuit
- Multiplex tilt and telescopic ECU
| Last Modified: 11-29-2007 | 1.6 C | |
| Service Category: Steering | Section: Steering Column | |
| Model Year: 2008 | Model: Sequoia | Doc ID: RM0000012G500TX |
| Title: STEERING COLUMN: POWER TILT AND POWER TELESCOPIC STEERING COLUMN SYSTEM: DESCRIPTION (2008 Sequoia) | ||
|
DTC |
B2603 |
Tilt and Telescopic Manual Switch Circuit Malfunction |
DESCRIPTION
Different voltage values are input to the multiplex tilt and telescopic ECU by operating the tilt and telescopic manual switch. The multiplex tilt and telescopic ECU then judges which motor and in which direction that motor should be moved based on the voltage value.
|
DTC Code |
Detection Condition |
Trouble Area |
|---|---|---|
|
B2603 |
When operating the tilt and telescopic manual switch, an abnormal voltage value is input to the multiplex tilt and telescopic ECU. |
|
WIRING DIAGRAM
INSPECTION PROCEDURE
PROCEDURE
|
1. |
READ VALUE USING TECHSTREAM (TILT AND TELESCOPIC MANUAL SWITCH) |
(a) Use the Data List to check if the tilt and telescopic manual switch is functioning properly.
Tilt & Telescopic
|
Tester Display |
Measurement Item/Range |
Normal Condition |
Diagnostic Note |
|---|---|---|---|
|
T&T Manual SW |
Voltage data of manual switch/min.: 0 V, max.: 5 V |
Neutral position: Below 0.2 V Tilt up: 1.67 to 2.13 V Tilt down: 0.54 to 0.74 V Telescopic contract: 1.08 to 1.40 V Telescopic extend: 2.22 to 2.77 V |
- |
Result
|
Result |
Proceed to |
|---|---|
|
Switch voltages in all directions are outside the standard. |
A |
|
Switch voltages in certain directions are outside the standard. |
B |
|
Switch voltages in all directions are within the standard. |
C |
|
|
2. |
CHECK HARNESS AND CONNECTOR (MULTIPLEX TILT AND TELESCOPIC ECU - HEADLIGHT DIMMER SWITCH) |
(a) Disconnect the H57 multiplex tilt and telescopic ECU connector.
(b) Disconnect the H11 headlight dimmer switch connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
H57-4 (VC) - H11-8 (VC) |
Always |
Below 1 Ω |
|
H57-3 (MSW) - H11-10 (MSW) |
Always |
Below 1 Ω |
|
H11-8 (VC) - Body ground |
Always |
10 kΩ or higher |
|
H11-10 (MSW) - Body ground |
Always |
10 kΩ or higher |
|
|
3. |
INSPECT MULTIPLEX TILT AND TELESCOPIC ECU (VC TERMINAL VOLTAGE) |
|
(a) Reconnect the H57 multiplex tilt and telescopic ECU connector. |
(b) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
|
Tester Connection |
Switch Condition |
Specified Condition |
|---|---|---|
|
H57-4 (VC) - H57-3 (MSW) |
Ignition switch ON |
4.9 to 5.1 V |
|
|
4. |
INSPECT HEADLIGHT DIMMER SWITCH (TILT AND TELESCOPIC MANUAL SWITCH) |
|
(a) Disconnect the H11 headlight dimmer switch connector. |
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Switch Condition |
Specified Condition |
|---|---|---|
|
8 (VC) - 10 (MSW) |
Tilt up |
360 Ω |
|
Tilt down |
1990 Ω |
|
|
Telescopic contract |
790 Ω |
|
|
Telescopic extend |
160 Ω |
|
|
|