- Center differential lock detection switch
- Center differential lock detection switch circuit
- 4WD control ECU
- VSC actuator (skid control ECU)
| Last Modified: 11-29-2007 | 1.6 C | |
| Service Category: Brake | Section: Brake Control/Dynamic Control System | |
| Model Year: 2008 | Model: Sequoia | Doc ID: RM00000252G00DX |
| Title: BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: VEHICLE STABILITY CONTROL SYSTEM: DESCRIPTION (2008 Sequoia) | ||
|
DTC |
C1340/47 |
Center Differential Lock Circuit |
DESCRIPTION
When the vehicle is changed to 4WD and the center differential locked, VSC control turns off and the VSC OFF indicator illuminates.
|
DTC Code |
DTC Detection Condition |
Trouble Area |
|---|---|---|
|
C1340/47 |
When the terminal IG1 voltage is between 10 and 14 V, there is an open in the Center differential lock detection switch circuit or there is a transfer mechanical malfunction for 2 seconds or more. |
|
WIRING DIAGRAM
INSPECTION PROCEDURE
NOTICE:
When replacing the VSC actuator assembly, perform zero point calibration
.
HINT:
If the transfer shift actuator cannot change from 2WD to 4WD or 4WD to 2WD or cannot lock the center differential, inspect and repair the touch select 2-4 and high-low systems first.
PROCEDURE
|
1. |
INSPECT SKID CONTROL ECU (EXI2 TERMINAL) |
|
(a) Disconnect the A19 ECU connector. |
(b) Turn the ignition switch to ON.
(c) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
A19-6 (EXI2) - Body ground |
4WD with center differential locked (Center differential lock detection switch ON) |
Below 1.5 V |
|
A19-6 (EXI2) - Body ground |
2WD or 4WD with center differential free (Center differential lock detection switch OFF) |
10 to 14 V |
|
|
2. |
CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU - 4WD CONTROL ECU) |
|
(a) Confirm that the skid control ECU connector and 4WD control ECU connector are properly connected. |
(b) Disconnect the A19 and A28 ECU connectors.
(c) Inspect both the connector case and the terminal for deformation and corrosion.
OK:
No deformation or corrosion.
(d) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
A19-6 (EXI2) - A28-14 (4WD) |
Always |
Below 1 Ω |
|
A19-6 (EXI2) - Body ground |
Always |
10 kΩ or higher |
|
|
3. |
CHECK HARNESS AND CONNECTOR (4WD CONTROL ECU - BODY GROUND) |
|
(a) Confirm that the 4WD control ECU connector and shift actuator connectors are properly connected. |
(b) Disconnect the A28 ECU connector.
(c) Inspect the connector case and the terminal for deformation and corrosion.
OK:
No deformation or corrosion.
(d) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
A28-14 (4WD) - Body ground |
4WD with center differential locked (Center differential lock detection switch ON) |
Below 1 Ω |
|
2WD or 4WD with center differential free (Center differential lock detection switch OFF) |
10 kΩ or higher |
|
|
4. |
RECONFIRM DTC |
(a) Clear the DTC(s)
.
(b) Start the engine.
(c) Check if the same DTC(s) is output
.
Result
|
Result |
Proceed to |
|---|---|
|
DTC is output |
A |
|
DTC is not output |
B |
|
|
|