ADAPTIVE VARIABLE SUSPENSION SYSTEM, Diagnostic DTC:C1785
| DTC Code | DTC Name |
|---|---|
| C1785 | Steering Control ECU Communication Error |
DESCRIPTION
The absorber control ECU receives signals from the front steering control ECU via CAN communication. When there is a communication malfunction, the malfunction will be detected by the diagnosis function.
| DTC Code | Detection Condition | Trouble Area |
|---|---|---|
| C1785 | While the engine switch is on (IG), the front steering control ECU malfunction signal is received for 5 seconds or more. |
|
INSPECTION PROCEDURE
Note
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Before performing troubleshooting, inspect the connectors of related circuits.
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If DTC C1782 (Power Source Voltage Malfunction) is output at the same time, perform troubleshooting for C1782 first Click here.
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Before replacing the absorber control ECU, perform all of the following again: 1) symptom simulation Click here; 2) DTC inspection Click here; and 3) GTS inspection (ECU Data List or Active Test Click here. If no malfunctions are found in other areas, replace the absorber control ECU.
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When the absorber control ECU is replaced, switch to test mode and check that all test mode DTCs are cleared when their respective deletion conditions are met (See page . Click here)
PROCEDURE
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CHECK FOR DTC (CAN COMMUNICATION SYSTEM)
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Check for DTCs Click here.
Result Result Proceed to CAN DTC is not output A CAN DTC is output (for LHD) B CAN DTC is output (for RHD) C
B 
GO TO CAN COMMUNICATION SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING) Click here
C
GO TO CAN COMMUNICATION SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING) Click here
A 
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CHECK FOR DTC (VGRS SYSTEM)
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Check for VGRS system malfunction DTCs Click here.
Result Result Proceed to DTC is not output A DTC is output B
B
GO TO VGRS SYSTEM (DIAGNOSTIC TROUBLE CODE CHART) Click here
A 
REPLACE ABSORBER CONTROL ECU Click here
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