DTC 21

CIRCUIT DESCRIPTION
ECU sends a signal to suspension control actuator to drive the rotary valve of the shock absorber changing the shock absorber damping force. A suspension control actuator is fitted to each pneumatic cylinder.
The actuator is driven electromagnetically by step motor so that it can accurately follow the driving conditions that change frequently.




DETECTING CONDITIONS

HINT:
- Code 21 corresponds to the front RH suspension control actuator circuit.
- Code 22 corresponds to the front LH suspension control actuator circuit.
- Code 23 corresponds to the rear RH suspension control actuator circuit.
- Code 24 corresponds to the rear LH suspension control actuator circuit.

Once the ECU stores DTC 21, 22, 23, or 24 in memory, damping force is not carried out until a normal signal is input to the ECU from the suspension control actuator.
However, control is resumed if the ignition switch is turned off, then on again.




WIRING DIAGRAM

Step 1:

Step 2:

Step 3:

INSPECTION PROCEDURE

HINT:
- When DTC "21" is displayed, check the front RH suspension control actuator circuit.
- When DTC "22" is displayed, check the front LH suspension control actuator circuit.
- When DTC "23" is displayed, check the rear RH suspension control actuator circuit.
- When DTC "24" is displayed, check the rear LH suspension control actuator circuit.
- When DTC 21, 22, 23, and 24 displayed, perform inspection step 2.