DTC C1934: Front Metal Board Overheat; DTC C1935: Front Control Board Overheat: Procedure

1. Turn the power switch OFF and wait 30 minutes or more.
2. Check if "Check Active Stabilizer Suspension System" is still displayed on the multi-information display.

   HINT: 

   30 minutes is the approximate amount of time that is required for the front active stabilizer control ECU to cool down sufficiently.

   RESULT
   
   

   Result	Proceed to
   Displayed	A
   Not displayed	B

B → See step   3 

A: Go to next step 

1. Check the temperature around the front active stabilizer control ECU.

   HINT: 

   If there are factors causing a high temperature in the front active stabilizer control ECU, eliminate those factors, wait for the ECU to cool down, and recheck for the DTC.

   OK

   No factors causing high temperatures

NG → REPAIR MALFUNCTIONING AREA 

OK: Go to next step 

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.
   • 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 C190C and/or C190D are not output

NG → See step   6 

OK → RETURNS TO NORMAL OPERATION (SYSTEM RETURNS TO NORMAL DUE TO RETURN OF METAL BOARD OR CONTROL BOARD TO NORMAL TEMPERATURE)