[ Model - ECLIPSE CROSS / Year - 2018 ]
2018 / ECLIPSE CROSS / EC - Workshop Manual
35 -SERVICE BRAKES > 35C-ACTIVE STABILITY CONTROL SYSTEM (ASC) > TROUBLESHOOTING<ASC-ECU><ASC-ECU> > DIAGNOSIS CODE PROCEDURES > CODE NO. C1000: ABNORMALITY IN STOP LAMP SWITCH CIRCUIT
Code No. C1000 Brake SW (Stuck)
 
 
caution
  • If there is any problem in the CAN bus lines, an incorrect diagnosis 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.
 
 
OPERATION
ETACS-ECU sends the ON signal generated when the brake pedal is depressed and OFF signal generated when it is released to ASC-ECU via the CAN bus lines.
 
 
 
DIAGNOSIS CODE SET CONDITIONS
This diagnosis code is set in the following case.
  • When the vehicle has run for a long time with the stop lamp switch turned ON.
  • When the OFF status of the stop lamp switch does not match the vehicle attitude
 
 
 
PROBABLE CAUSES
  • Incorrect adjustment of brake pedal height
  • Master cylinder malfunction
  • Brake booster malfunction
  • Damaged wiring harness and connectors
  • Improper adjustment of stop lamp switch installation position
  • Malfunction of the stop lamp switch
  • ETACS-ECU malfunction
  • ASC-ECU malfunction
 
 
 
 
DIAGNOSIS PROCEDURE
STEP 1. M.U.T.-IIISE CAN bus diagnostics
Use M.U.T.-IIISE to diagnose the CAN bus lines.
Is the check result normal?
Go to Step 3.
Repair the CAN bus lines (Refer to GROUP 54C - CAN Bus Diagnostics Table ). On completion, go to Step 2.
 
STEP 2. Diagnosis code recheck after resetting CAN bus lines
Is diagnosis code No.C1000 set?
Go to Step 3.
This diagnosis is complete.
 
STEP 3. Brake pedal check
Refer to GROUP 35A - On-vehicle Service, Brake Pedal Check and Adjustment .
Is the check result normal?
Go to Step 4.
repair it.
 
STEP 4. Check for stop lamp switch installation
Refer to GROUP 35A - On-vehicle Service, Brake Pedal Check and Adjustment .
Is the check result normal?
Go to Step 5.
Install the stop lamp switch correctly (Refer to GROUP 35A - Brake Pedal ).
 
STEP 5. Stop lamp switch continuity check
Refer to GROUP 35A - Brake Pedal/Inspection .
Is the check result normal?
Go to Step 6.
Replace the stop lamp switch (Refer to GROUP 35A - Brake Pedal ).
 
STEP 6. Brake drag check
Check the brake system for drag (Refer to GROUP 35A - Front Disc Brake <Vehicles with 1-piston ventilate front disc brake (Front)>, <Vehicles with 2-piston ventilate front disc brake (Front)> or Rear Disc Brake <Vehicles without electric parking brake>, <Vehicles with electric parking brake>).
Is the check result normal?
Go to Step 7.
Repair it.
 
STEP 7. Brake booster check
Refer to GROUP 35A - On-vehicle Service/Brake Booster Operation Check .
Is the check result normal?
Go to Step 8.
Replace the brake booster (Refer to GROUP 35A - Master Cylinder Assembly and Brake Booster <LHD> or <RHD>).
 
STEP 8. M.U.T.-IIISE other system's data list
Check the ETACS-ECU system data list.
  • The brake pedal is depressed.
 
Item No.Item nameNormal condition
113Stop lamp switchOFF to ON
Is the check result normal?
Go to Step 9.
Refer to GROUP 54A - ETACS, Inspection Procedure 12 "The stop lamp switch signal is not received." .
 
STEP 9. Diagnosis code recheck
Erase the diagnosis code.
Is diagnosis code No.C1000 set?
Replace the hydraulic unit (integrated with ASC-ECU) (Refer to ).
Intermittent malfunction (Refer to GROUP 00 - How to Use Troubleshooting/How to Cope with Intermittent Malfunctions .)