DTC 16

DTC C1716/16 Front Acceleration Sensor LH Malfunction

DESCRIPTION

DTC Detection Condition:

The acceleration sensor (up & down G sensor) detects the upward and downward acceleration of the vehicle, and outputs it as a voltage to the suspension control ECU. Up & down G sensors are installed in 3 locations: 1) the suspension control ECU, 2) the driver side instrument panel, and 3) the rear quarter. Each up & down G sensor independently detects the upward and downward acceleration. During a test mode inspection, the suspension control ECU reads the fluctuations in each sensor's signal. If a sensor's signal does not fluctuate, test mode DTCs C1796/96, C1797/97 and C1798/98 are output.

Wiring Diagram:

Step 1-2:

Step 2(Continued)-3:

Step 3(Continued)-4:

Step 4(Continued):

INSPECTION PROCEDURE

NOTE:
- Before performing troubleshooting, inspect the connectors of related circuits.
- If DTC C1782/82 (Power Source Voltage Malfunction) is output at the same time, perform troubleshooting for C1782/82 first.
- Before replacing the suspension control ECU, perform all of the following again: 1) symptom simulation; 2) DTC inspection; and 3) intelligent tester or Techstream inspection (Data List or Active Test). If no malfunctions are found in other areas, replace the suspension control ECU.
- If the suspension control ECU or height control sensor is replaced, the vehicle height offset calibration must be performed.
- If DTCs C1715 and C1796 (Front Acceleration Sensor RH Malfunction) are output, replace the suspension control ECU (built into front acceleration sensor RH).