C194A

SUSPENSION CONTROL: ACTIVE STABILIZER SUSPENSION SYSTEM: C194A-C194C: Open in Front Motor Driver Circuit


DESCRIPTION

When an open or short is detected in the motor circuit of the front active stabilizer control ECU and front active stabilizer control actuator, DTC C194A, C194B and/or C194C are output.





WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. CHECK CONNECTOR CONNECTION CONDITION

(a) Turn the power switch OFF.

(b) Inspect the condition of the front active stabilizer control ECU connector terminal.

OK:

Connector and terminal are not deformed or damaged. Terminal is not loose or corroded.

HINT
The harness from the front active stabilizer control actuator to the front active stabilizer control ECU is part of the front active stabilizer control actuator. If the harness is damaged and cannot be repaired, replace the front active stabilizer control actuator assembly Removal.

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

2. INTERCHANGE FRONT AND REAR ACTIVE STABILIZER CONTROL ECU

(a) Turn the power switch OFF.

(b) Interchange the front active stabilizer control ECU with the rear active stabilizer control ECU, and install them securely.

HINT
- Interchange the front and rear active stabilizer control ECUs and check for DTCs. After interchanging the ECUs, if a rear stabilizer DTC is displayed, it can be determined that the front active stabilizer control ECU is malfunctioning. If no DTC is output, the front active stabilizer control actuator is malfunctioning.
- For the ECU removal and installation procedures, refer to the front ECU procedures Removal or the rear ECU procedures Removal.

NEXT -- Continue to next step.

3. CLEAR DTC

(a) Turn the power switch OFF.

(b) Connect the Techstream to the DLC3.

(c) Turn the power switch ON (IG) and the Techstream on.

(d) Clear the DTC Active Stabilizer Suspension System.

NEXT -- Continue to next step.

4. CHECK OPERATION OF FRONT ACTIVE STABILIZER CONTROL ECU

(a) Turn the power switch OFF.

(b) Connect the Techstream to the DLC3.

(c) Turn the power switch ON (READY) and wait 30 seconds or more. Then check for rear stabilizer DTCs Active Stabilizer Suspension System.

OK:

DTC C1922, C1923 and/or C1924 are not output

NG -- REPLACE FRONT ACTIVE STABILIZER CONTROL ECU Removal

OK -- REPLACE FRONT ACTIVE STABILIZER CONTROL ACTUATOR ASSEMBLY Removal