C1900
C1900, C1901, C1906, C1907, C1927 RAS CONTROL UNIT
Description
- RAS actuator and the power steering solenoid valve is controlled by each sensor signal.
- The fail-safe function stops the rear wheel angle function, when the electric components and the mechanical components are malfunctioning.
- The protective function stops RAS system temporarily when the input signal is not inputted to RAS control unit (When battery-power does not work temporarily).
DTC Logic
DTC DETECTION LOGIC
DTC Detection Logic:
DTC CONFIRMATION PROCEDURE
1.DTC REPRODUCTION PROCEDURE
With CONSULT-III
1. Turn the ignition switch from OFF to ON.
2. Perform RAS control unit self-diagnosis.
Without CONSULT-III
1. Start the engine.
2. Perform the self-diagnosis. Refer to Diagnosis Description.
Is DTC "C1900", "C1901", "C1906", "C1907", "C1927" or "RAS warning lamp flickering pattern:11" detected?
YES - Proceed to diagnosis procedure. Refer to C1900.
NO - INSPECTION END
Diagnosis Procedure
1.PERFORM SELF-DIAGNOSIS
With CONSULT-III
1. Turn the ignition switch from OFF to ON.
2. Perform RAS control unit self-diagnosis.
Without CONSULT-III
1. Start the engine.
2. Perform the self-diagnosis. Refer to Diagnosis Description.
Is DTC "C1900", "C1901", "C1906", "C1907", "C1927"or "RAS warning lamp flickering pattern:11" detected?
YES - Replace RAS control unit. Refer to Exploded View.
NO - GO TO 2.
2.CHECK INFORMATION
With CONSULT-III
Check the "DATA MONITOR" value of each DTC detected with the self-diagnosis function. Refer to RAS Control Unit.
Is each data the standard value?
YES - Check each harness connector pin terminal for disconnection.
NO - Replace RAS control unit. Refer to Exploded View.
Special Repair Requirement
BEFORE REPLACING RAS CONTROL UNIT
- Record the self-diagnosis results (history).
CAUTION:
- Never erase the memory (history) of self-diagnosis results when replacing RAS control unit after diagnosis.
- Erase the memory of the self-diagnosis results (record) after printing out or recording all the values of "DATA MONITOR".