[Previous][Next]
Code No. C1366: Lateral G SNSR.stuck/low gain
Code No. C1371: Yaw rate SNSR.stuck/low gain
Code No. C1381: Longitudinal G stuck/low gain
Code No. C1385: Yaw rate sensor
Code No. C1387: Lateral G sensor/G performance
 
 
caution
  • If there is any problem in the CAN bus lines, an incorrect diagnostic trouble code may be set. Prior to this diagnosis, diagnose the CAN bus lines (Refer to GROUP 54C, CAN Bus Diagnostics Table ).
  • Whenever ECU is replaced, ensure that the CAN bus lines are normal.
  • When the hydraulic unit (integrated with ASC-ECU) is replaced, always carry out the calibration of the steering wheel sensor and the G and yaw rate sensor (Refer to and ).
 
 
OPERATION
The ASC-ECU monitors the integrated G and yaw rate sensor.
 
 
DIAGNOSTIC TROUBLE CODE SET CONDITIONS
The ASC-ECU will set a diagnostic trouble code when it receives an unfeasible signal from the G and yaw rate sensor.
 
 
PROBABLE CAUSES
  • Malfunction of the hydraulic unit assembly (integrated with ASC-ECU).
  • Improper installation of the hydraulic unit (integrated with ASC-ECU).
noteWhen the vehicle is driven under special conditions, such as driving on a rough road, this diagnostic trouble code will be set.
 
 
DIAGNOSIS
STEP 1. Using scan tool (M.U.T.-III), diagnose the CAN bus lines.
Use scan tool (M.U.T.-III) to diagnose the CAN bus lines.
Is the check result normal?
Go to Step 3.
Repair the CAN bus line (Refer to GROUP 54C, Troubleshooting ). On completion, go to Step 2.
 
STEP 2. Diagnostic trouble code recheck after resetting CAN bus lines
Is diagnostic trouble code No. C1366, C1371, C1381, C1385 or C1387 set?
Go to Step 3.
This diagnosis is complete.
 
STEP 3. M.U.T.-III data list
Check the following service data (Refer to ).
  • Item No.05: Longitudinal G sensor.
  • Item No.06: Lateral G sensor.
  • Item No.08: Yaw rate sensor.
  • Item No.16: Longitudinal G sensor offset.
  • Item No.17: Lateral G sensor offset.
Is the check result normal?
Go to Step 4.
Replace the hydraulic unit assembly (integrated with ASC-ECU) (Refer to ).
 
STEP 4. Check whether the diagnostic trouble code is set again.
(1) Erase the set diagnostic trouble code.
(2) Ignition switch: "LOCK" (OFF) to "ON".
(3) Start the engine.
Is diagnostic trouble code No. C1366, C1371, C1381, C1385 or C1387 set?
Replace the hydraulic unit (integrated with ASC-ECU) (Refer to ).
The trouble can be an intermittent malfunction (Refer to GROUP 00, How to Cope with Intermittent Malfunction ).