Kinetic Dynamic Suspension System

SUSPENSION CONTROL: KINETIC DYNAMIC SUSPENSION SYSTEM: C1831/31,C1832/32: Accumulator Solenoid Malfunction / Upside
C1832/32 - Accumulator Solenoid Malfunction / Downside

DESCRIPTION

The stabilizer control ECU receives information from the steering angle sensor, skid control ECU (speed signal) and yaw rate and acceleration sensor via CAN communication. Based on this information, the stabilizer control ECU turns the stabilizer control solenoid valve (built into the stabilizer control with accumulator housing assembly) on or off.





WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. READ VALUE USING TECHSTREAM (ACCUMULATOR VALVE)

(a) Turn the engine switch off.

(b) Connect the Techstream to the DLC3.

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

(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





(g) Perform the Active Test of the stabilizer control ECU using the Techstream.

KDSS





(h) Check that the solenoid operating sound can be heard, and that the Data List display changes between ON and OFF in response to the Active Test.

OK:

Solenoid operating sound can be heard and display changes between ON and OFF in response to Active Test.

NG -- CHECK HARNESS AND CONNECTOR (STABILIZER CONTROL ECU - STABILIZER CONTROL SOLENOID VALVE)
OK -- Continue to next step.

2. RECONFIRM DTC

(a) Clear the DTCs Kinetic Dynamic Suspension System

(b) Check for DTCs Kinetic Dynamic Suspension System.

Result





B -- USE SIMULATION METHOD TO CHECK How To Proceed With Troubleshooting

A -- REPLACE STABILIZER CONTROL ECU

3. CHECK HARNESS AND CONNECTOR (STABILIZER CONTROL ECU - STABILIZER CONTROL SOLENOID VALVE)

(a) Disconnect the stabilizer control ECU connector.

(b) Disconnect the stabilizer control with accumulator housing assembly connector.

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

Standard Resistance:





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.

4. INSPECT STABILIZER CONTROL SOLENOID VALVE

(a) Disconnect the stabilizer control with accumulator housing assembly connector.

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





Standard Resistance:

C1831/31 (for Upper Chamber)





C1832/32 (for Lower Chamber)





Text in Illustration





(c) Check for an operating sound of the stabilizer control solenoid valve.

(1) for Upper Chamber:

Connect terminal 5 (SLAL) to the positive (+) battery terminal, and terminal 4 (AUG) to the negative (-) battery terminal.





OK:

An operating sound (click sound) can be heard.

Text in Illustration





(2) for Lower Chamber:

Connect terminal 6 (SLAU) to the positive (+) battery terminal, and terminal 4 (AUG) to the negative (-) battery terminal.





OK:

An operating sound (click sound) can be heard.

Text in Illustration





NG -- REPLACE STABILIZER CONTROL WITH ACCUMULATOR
HOUSING ASSEMBLY Removal

OK -- REPLACE STABILIZER CONTROL ECU