[ Model - ECLIPSE CROSS / Year - 2018 ]
2018 / ECLIPSE CROSS / EC - Workshop Manual
23 -AUTOMATIC TRANSMISSION > 23A-CVT > TROUBLESHOOTING<CVT><CVT> > DIAGNOSIS CODE PROCEDURES > CODE NO. P0703 STOP LAMP SWITCH MALFUNCTION
Code No. P0703: Malfunction of Stop Lamp Switch

 
 
 
 
DIAGNOSTIC FUNCTION
CVT-ECU detects malfunction using the stop lamp switch signal sent from the ETACS-ECU.
 
 
JUDGEMENT CRITERIA
Drive the vehicle at 30 km/h or more for 10 seconds, and then turn the ignition switch to the OFF position. In this sequential operation, no variation has been found in the stop lamp switch input signal in two consecutive times.
 
 
PROBABLE CAUSES
  • Malfunction of CAN bus line
  • Malfunction of the stop lamp switch
  • Damaged wiring harness and connectors
  • Malfunction of CVT-ECU
  • Malfunction of ETACS-ECU
 
 
DIAGNOSIS PROCEDURE
STEP 1. M.U.T.-IIISE CAN bus diagnostics
Use M.U.T.-IIISE to perform the CAN bus diagnosis.
Is the check result normal?
Go to Step 2.
Repair the CAN bus lines.
 
STEP 2. M.U.T.-IIISE data list
Item 59: Brake switch
OK: The data list changes in response to the brake operation.
Is the check result normal?
Go to Step 3.
Check the stop lamp switch circuit (Refer to GROUP 54A - ETACS, Trouble Symptom Chart for Input Signal ).
 
STEP 3. Symptom recheck after erasing diagnosis code
Is the diagnosis code set?
Replace CVT-ECU.
Intermittent malfunction (Refer to GROUP 00 - How to Cope with Intermittent Malfunction ).