DESCRIPTION
INSPECTION PROCEDURE
CHECK DTC (VARIABLE GEAR RATIO STEERING SYSTEM)
CLEAR DTC
CHECK DTC
DTC C1785 Steering Control ECU Communication Error
DESCRIPTION
The suspension control ECU receives signals from the steering control ECU via CAN communication.
| DTC Code | Detection Condition | Trouble Area |
| C1785 | While the engine switch is on (IG), the steering control ECU malfunction signal is received for 5 seconds. | Variable gear ratio steering system (VGRS system)
Suspension control ECU
|
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 DTC (VARIABLE GEAR RATIO STEERING SYSTEM) |
Check if a DTC is output from the variable gear ratio steering system ().
Result| Result | Proceed to |
| DTC is not output | A |
| DTC is output | B |
| | GO TO VARIABLE GEAR RATIO STEERING SYSTEM (DIAGNOSTIC TROUBLE CODE CHART) ()
|
|
|
Check for DTCs.
Result| Result | Proceed to |
| DTC C1785 is output | A |
| DTC C1785 is not output | B |
| | USE SIMULATION METHOD TO CHECK ()
|
|
|
| A | |
| |
| REPLACE SUSPENSION CONTROL ECU ()
|
|