DESCRIPTION
In the KDSS hydraulic circuit, the fluid is contained under pressure. If the fluid temperature is 20°C (68°F), the pressure is approximately 3.0 MPa (30.6 kgf/cm2, 435 psi).
DTC Code |
DTC Detection Condition |
Trouble Area |
---|---|---|
C1812/12 |
One of the following conditions is met:
|
|
WIRING DIAGRAM
PROCEDURE
1. |
READ VALUE USING TECHSTREAM (OIL PRESSURE SENSOR) |
NOTICE:
(a) Turn the ignition switch off.
(b) Connect the Techstream to the DLC3.
(c) Turn the ignition switch to ON.
(d) Turn the Techstream on.
(e) Enter the following menus: Chassis / KDSS / Data List.
(f) Select the item below in the Data List, and read the value displayed on the Techstream.
KDSS
Tester Display |
Measurement Item/Range |
Normal Condition |
Diagnostic Note |
---|---|---|---|
Oil Pressure Sensor |
Oil pressure sensor/ Min.: -784.79 MPa (-8002.66 kgf/cm2, -113794.55 psi) Max.: 784.76 MPa (8002.35 kgf/cm2, 113790.20 psi) |
2.6 MPa (26.5 kgf/cm2, 377 psi) to 3.0 MPa (30.6 kgf/cm2, 435 psi): When vehicle stopped and fluid temperature 20°C (68°F) |
- |
(g) Check the fluid pressure.
OK:
2.6 MPa (26.5 kgf/cm2, 377 psi) to 3.0 MPa (30.6 kgf/cm2, 435 psi)
NG | ![]() |
GO TO STEP 3 |
|
2. |
RECONFIRM DTC |
(a) Clear the DTCs (See page ).
(b) Check for DTCs (See page ).
Result |
Proceed to |
---|---|
DTC is output |
A |
DTC is not output |
B |
A | ![]() |
REPLACE STABILIZER CONTROL ECU |
B | ![]() |
USE SIMULATION METHOD TO CHECK |
3. |
INSPECT STABILIZER CONTROL ECU (SBP1 VOLTAGE) |
(a) Connect the stabilizer control ECU connector.
(b) Disconnect the stabilizer control with accumulator housing connector.
(c) Measure the voltage according to the value(s) in the table below. Standard Voltage:
|
|
NG | ![]() |
GO TO STEP 7 |
|
4. |
CHECK HARNESS AND CONNECTOR (STABILIZER CONTROL ECU - ACCUMULATOR PRESSURE SENSOR) |
(a) Disconnect the stabilizer control ECU connector.
(b) Disconnect the stabilizer control with accumulator housing connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
F70-17 (SOP1) - O23-2 (SOP1) |
Always |
Below 1 Ω |
F70-17 (SOP1) - Body ground |
Always |
10 kΩ or higher |
F70-6 (SGP1) - O23-1 (SGP1) |
Always |
Below 1 Ω |
F70-6 (SGP1) - Body ground |
Always |
10 kΩ or higher |
NG | ![]() |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
5. |
INSPECT ACCUMULATOR PRESSURE SENSOR (OUTPUT VOLTAGE) |
(a) Connect the stabilizer control ECU connector.
(b) Connect the stabilizer control with accumulator housing connector.
(c) Measure the voltage according to the value(s) in the table below. Standard Voltage:
|
|
OK | ![]() |
REPLACE STABILIZER CONTROL ECU |
|
6. |
READ VALUE USING TECHSTREAM (OIL PRESSURE SENSOR) |
(a) Disconnect the stabilizer control with accumulator housing connector.
(b) Connect the stabilizer control ECU connector.
(c) Connect the Techstream to the DLC3.
(d) Turn the ignition switch to ON.
(e) Turn the Techstream on.
(f) Enter the following menus: Chassis / KDSS / Data List.
(g) Select the item below in the Data List, and read the value displayed on the Techstream.
KDSS
Tester Display |
Measurement Item/Range |
Normal Condition |
Diagnostic Note |
---|---|---|---|
Oil Pressure Sensor |
Oil pressure sensor/ Min.: -784.79 MPa (-8002.66 kgf/cm2, -113794.55 psi) Max.: 784.76 MPa (8002.35 kgf/cm2, 113790.20 psi) |
2.6 MPa (26.5 kgf/cm2, 377 psi) to 3.0 MPa (30.6 kgf/cm2, 435 psi): When vehicle stopped and fluid temperature 20°C (68°F) |
- |
(h) Using a 1.5 V dry cell battery, connect the positive (+) lead to terminal 2 (SOP1) of the stabilizer control with accumulator housing connector and the negative (-) lead to terminal 1 (SGP1), and check that the Data List display changes. OK: Data List display changes. Text in Illustration
|
|
OK | ![]() |
REPLACE STABILIZER CONTROLWITH ACCUMULATORHOUSING ASSEMBLY |
NG | ![]() |
REPLACE STABILIZER CONTROL ECU |
7. |
CHECK HARNESS AND CONNECTOR (STABILIZER CONTROL ECU - ACCUMULATOR PRESSURE SENSOR) |
(a) Disconnect the stabilizer control ECU connector.
(b) Disconnect the stabilizer control with accumulator housing connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
F70-15 (SBP1) - O23-3 (SBP1) |
Always |
Below 1 Ω |
F70-15 (SBP1) - Body ground |
Always |
10 kΩ or higher |
OK | ![]() |
REPLACE STABILIZER CONTROL ECU |
NG | ![]() |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
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