DESCRIPTION
INSPECTION PROCEDURE
CHECK FOR DTC (VEHICLE STABILITY CONTROL SYSTEM)
CLEAR DTC
CHECK DTC
DTC C1783 Speed Signal Communication Error
DESCRIPTION
The speed sensors monitor the speed of the wheels, and send appropriate speed signals to the suspension control ECU through the skid control ECU. If trouble occurs in either the front speed sensor or rear speed sensor, DTC (C1783) is output.
| DTC Code | Detection Condition | Trouble Area |
| C1783 | A speed sensor circuit malfunction for 1 second or more. | Vehicle stability control system
Suspension control ECU
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INSPECTION PROCEDURE
Before performing troubleshooting, inspect the connectors of related circuits.
If the suspension control ECU or height control sensor is replaced, the vehicle height offset calibration must be performed ().
| 1.CHECK FOR DTC (VEHICLE STABILITY CONTROL SYSTEM) |
Check if a speed sensor malfunction DTC is output under the vehicle stability control system ().
Result| Result | Proceed to |
| DTC is not output | A |
| DTC is output | B |
| | GO TO VEHICLE STABILITY CONTROL SYSTEM (DIAGNOSTIC TROUBLE CODE CHART) ()
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Check for DTCs.
Result| Result | Proceed to |
| DTC C1783 is output | A |
| DTC C1783 is not output | B |
| | USE SIMULATION METHOD TO CHECK ()
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| A | |
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| REPLACE SUSPENSION CONTROL ECU ()
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