DTC 11
DTC 11 - RIGHT FRONT HEIGHT CONTROL SENSOR CIRCUITCIRCUIT DESCRIPTION
A height control sensor is fined to each suspension and continuously monitors the distance between the body and the suspension lower arm to detect the vehicle height as well as the displacement volume of the suspension caused by road unevenness.
Each sensor consists of a slit disc that rotates with the link as a unit and four pairs of photo interrupters. The slit disc rotates between the LED and the photo transistor of each photo interrupter, as does the slit of the steering sensor. The height control sensor detects the vehicle height in 16 steps by the output combinations of the on/off signals of the photo interrupters, converts them into serial data and sends the data to the ECU.
*1: Code 11 corresponds to the front RH height control sensor circuit.
Code 12 corresponds to the front LH height control sensor circuit.
Code 13 corresponds to the rear RH height control sensor circuit.
Code 14 corresponds to the rear LH height control sensor circuit.
Once the ECU stores diagnostic trouble code 11, 12, 13 or 14 in memory, vehicle height control, damping force and spring rate control are not carried out until a normal signal is input to the ECU from the height control sensor. However, control is resumed if the ignition switch is turned off, then on again.
DIAGNOSTIC CHART
HINT 1:
- When diagnostic trouble code 11 is displayed, check Front RH height control sensor circuit.
- When diagnostic trouble code 12 is displayed, check Front LH height control sensor circuit.
- When diagnostic trouble code 13 is displayed, check Rear RH height control sensor circuit.
- When diagnostic trouble code 14 is displayed, check Rear LH height control sensor circuit.
HINT 2:
- Perform inspection from step [1] when diagnostic trouble code 11, 12, 13 or 14 is displayed, and from step L3] when diagnostic trouble code 11, 12, 13 or 14 is not displayed.
WIRING DIAGRAM
Step 1:
Step 2:
Step 3:
INSPECTION PROCEDURE
HINT 1:
- When diagnostic trouble code ills displayed, check Front RH height control sensor circuit.
- When diagnostic trouble code 12 is displayed, check Front LH height control sensor circuit.
- When diagnostic trouble code 13 is displayed, check Rear RH height control sensor circuit.
- When diagnostic trouble code 14 is displayed, check Rear LH height control sensor circuit.
HINT 2:
- Perform inspection from step [1] when diagnostic trouble code 11, 12, 13 or 14 is displayed, and from step [3] when diagnostic trouble code 11, 12, 13 or 14 is not displayed.