C1832

SUSPENSION CONTROL: KINETIC DYNAMIC SUSPENSION SYSTEM: C1831/31: Accumulator Solenoid Malfunction / Upside

DTC C1831/31 - Accumulator Solenoid Malfunction / Upside

DTC C1832/32 - Accumulator Solenoid Malfunction / Downside

DESCRIPTION

By receiving signals from the stabilizer control ECU, the accumulator solenoid valve closes to cut the fluid flow to the accumulator (the valve closes when current is applied to the solenoid valve and opens when current is not applied).
The stabilizer control ECU controls the opening/closing of the accumulator solenoid valve based on the vehicle speed, lateral acceleration and steering speed sent from each sensor.






WIRING DIAGRAM





INSPECTION PROCEDURE
HINT: Start the inspection from step 1 when using the Techstream, and start from step 2 when not using the Techstream.

PROCEDURE

1. PERFORM ACTIVE TEST USING TECHSTREAM
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch ON and the Techstream on.
(c) Select the item below in the Active Test, and operate it with the Techstream.

KDSS:





(d) Check for an operating sound of the accumulator solenoid valve.
OK:
An operating sound (click sound) can be heard.
NG -- CHECK ANY OTHER DTCS OUTPUT (DTC C1761/61, C1774/74)
OK -- REPLACE STABILIZER CONTROL ECU
2. CHECK ANY OTHER DTCS OUTPUT (DTC C1761/61, C1774/74)
(a) Check if DTC C1761/61 or C1774/74 is output Kinetic Dynamic Suspension System.
Result:





HINT:
- If any other codes besides C1831/31 and C1832/32 are output, perform troubleshooting for those DTCs first.
- DTC C1761/61 indicates a Stabilizer Control ECU malfunction.
- DTC C1774/74 indicates a low battery positive voltage malfunction.
- If DTCs C1761/61 and C1774/74 are output at the same time, perform troubleshooting necessary for DTC C1774/74 first.

B -- REPAIR CIRCUITS INDICATED BY OUTPUT DTCS
A -- Continue to next step.
3. INSPECT ACCUMULATOR SOLENOID VALVE




(a) Disconnect the S33 connector from the accumulator solenoid valve.
(b) Measure the resistance according to the value(s) in the table below.
Standard resistance (Upside): C1831/31:






Standard resistance (Downside): C1832/32:





(c) Upside:
Connect terminal 1 (+B) to the battery positive (+) terminal, and terminal 2 (GND) to the battery negative (-) terminal.
(d) Downside:
Connect terminal 3 (+B) to the battery positive (+) terminal, and terminal 4 (GND) to the battery negative (-) terminal.
(e) Check for an operating sound of the accumulator solenoid valve.
OK:
An operating sound (click sound) can be heard.
HINT: The accumulator solenoid valve and stabilizer control valve are supplied as a unit.

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




(a) Disconnect the S34 connector from the stabilizer control ECU.
(b) Measure the resistance according to the value(s) in the table below.
Standard resistance:






NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR (STABILIZER CONTROL ECU - ACCUMULATOR SOLENOID VALVE)
OK -- Continue to next step.
5. CHECK HARNESS AND CONNECTOR (ACCUMULATOR SOLENOID VALVE - BODY GROUND)




(a) Measure the resistance according to the value(s) in the table below.
Standard resistance:






NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR (ACCUMULATOR SOLENOID VALVE - BODY GROUND)
OK -- REPLACE STABILIZER CONTROL ECU