Kinetic Dynamic Suspension System

SUSPENSION CONTROL: KINETIC DYNAMIC SUSPENSION SYSTEM: C1777/77: Steering Angle Sensor Circuit

DTC C1777/77 - Steering Angle Sensor Circuit

DESCRIPTION

The steering angle sensor signal is sent to the skid control ECU through the CAN communication system. When there is a malfunction in the communication, it will be detected by the diagnosis function.






WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. CHECK DTC OUTPUT
(a) Check the DTC for CAN communication and VSC system Reading and Clearing Diagnostic Trouble Codes.
(b) Check the DTC for KDSS Kinetic Dynamic Suspension System.
Result:






C -- REPAIR CIRCUITS INDICATED BY OUTPUT DTCS
B -- INSPECT CAN COMMUNICATION SYSTEM
A -- Continue to next step.
2. INSPECT STABILIZER CONTROL ECU (STEERING ANGLE SENSOR INPUT SIGNAL)




(a) Disconnect the S36 connector from the stabilizer control ECU.
(b) Turn the ignition switch to the ON position.
(c) Check the signal waveform between terminals SS3+ and SS3- conditions below.
Standard voltage:





HINT: If the voltage is stuck at 1.65 or 3.15 V or changes between 1.65 and 3.15 V, an error is determined.

NG -- CHECK HARNESS AND CONNECTOR (STABILIZER CONTROL ECU - SKID CONTROL ECU)
OK -- REPLACE STABILIZER CONTROL ECU
3. CHECK HARNESS AND CONNECTOR (STABILIZER CONTROL ECU - SKID CONTROL ECU)




(a) Disconnect the S36 connector from the stabilizer control ECU.
(b) Disconnect the S37 connector from the skid control ECU.
(c) Measure the resistance according to the value(s) in the table below.
Standard resistance:






NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR (STABILIZER CONTROL ECU - SKID CONTROL ECU)
OK -- REPLACE SKID CONTROL ECU