DTC C1938: Malfunction in Front Active Stabilizer Control ECU Short Relay Power Supply IC: Procedure

1. Turn the power switch OFF.
2. 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. Refer to REMOVAL or the rear ECU procedures. Refer to REMOVAL .

NEXT: Go to next step 

1. Turn the power switch OFF.
2. Connect the Techstream to the DLC3.
3. Turn the power switch ON (IG) and the Techstream on.
4. Clear the DTC. Refer to DTC CHECK / CLEAR .

NEXT: Go to next step 

1. Turn the power switch OFF.
2. Connect the Techstream to the DLC3.
3. Turn the power switch ON (READY) and wait 30 seconds or more. Then check for rear stabilizer DTCs. Refer to DTC CHECK / CLEAR .

   OK

   DTC C1912 is not output

NG → See step   5 

OK → See step   4