C1792

DTC C1792 Left Front Acceleration Sensor Circuit Malfunction

CIRCUIT DESCRIPTION

DTC Detection Condition:

The acceleration sensor detects the up-down movement of the vehicle body. On the front side, one acceleration sensor, combined in the height control sensor, is installed in each of the right and left tire houses, and on the rear side in the trunk room. The piezoresistive system has been introduced in the sensor chip. The vehicle speed acceleration bends the beams of the sensor chip and changes the resistance value in accordance with the acceleration. The acceleration sensor converts the resistance value into the electric signal and outputs it in the suspension control ECU.

HINT:
- Code C1715/15 corresponds to the right front acceleration sensor circuit.
- Code C1716/16 corresponds to the left front acceleration sensor circuit.
- Code C1717/17 corresponds to the rear acceleration sensor circuit.
- Code C1991/91 corresponds to the right front acceleration sensor circuit.
- Code C1992/92 corresponds to the left front acceleration sensor circuit.
- Code C1993/93 corresponds to the rear acceleration sensor circuit.

Once the ECU stores DTC C1715/15, C1716/16 or C1717/17 in memory, damping force control is not carried out until a normal signal is input to the ECU from the acceleration sensor.

The control is resumed, however, if the ignition switch is turned OFF, then ON again.

Wiring Diagram:

Step 1:

Step 2:

Step 2 (Cont'd) - 3:

INSPECTION PROCEDURE

HINT:
- When DTC C1715/15 is displayed, check the right front acceleration sensor circuit.
- When DTC C1716/16 is displayed, check the left front acceleration sensor circuit.
- When DTC C1717/17 is displayed, check the rear acceleration sensor circuit.
- When DTC C1991/91 is displayed, check the right front acceleration sensor circuit.
- When DTC C1992/92 is displayed, check the left front acceleration sensor circuit.
- When DTC C1993/93 is displayed, check the rear acceleration sensor circuit.