[ Model - ECLIPSE CROSS / Year - 2018 ]
2018 / ECLIPSE CROSS / EC - Workshop Manual
42 -BODY > 42B-KEYLESS OPERATION SYSTEM (KOS) > TROUBLESHOOTING > DIAGNOSIS CODE PROCEDURES > B1148 ESL power control
Code No. B1148 ESL power supply
Code No. B1154 ESL power supply fail (ESL)
 
 
cautionWhen replacing the ECU, always check that the communication circuit is normal.
 
 
DIAGNOSTIC FUNCTION
When an error is detected to the circuit system of the electric steering lock, KOS&OSS-ECU sets diagnosis codes No.B1148 and No.B1154. At the same time, KOS&OSS-ECU displays the steering lock abnormality warning to the combination meter. Also, when diagnosis code No.B1148 is the past trouble, the LIN bus may have a problem.
 
 
JUDGEMENT CRITERIA
Check Conditions
  • At electric steering lock certification
Judgement Criterion
  • Error circuit in the power supply circuit system or PCO line circuit system of the electric steering lock is detected.
 
 
PROBABLE CAUSES
  • Damaged harness wires and connectors
  • Electric steering lock malfunction
  • Malfunction of KOS&OSS-ECU
  • LIN bus malfunction <B1148 is the past trouble>
 
 
DIAGNOSIS PROCEDURE
STEP 1. Check of short to power supply in PCO line between electric steering lock connector and KOS&OSS-ECU connector.
Is the check result normal?
Go to Step 2.
Repair the connector(s) or wiring harness.
 
STEP 2. Check of short to earth and open circuit in PCO line between electric steering lock connector and KOS&OSS-ECU connector.
noteBecause the conformity cannot be determined even when the digital tester is used to measure the voltage of PCO line between the electric steering lock connector and KOS&OSS-ECU connector, be sure to use the analogue tester (With the keyless operation key placed outside of the vehicle, if the tester needle swings to the battery voltage when the engine switch is operated, it is judged normal).
Is the check result normal?
Go to Step 3.
Repair the connector(s) or wiring harness.
 
STEP 3. After performing the locking and unlocking operations of the electric steering lock, recheck the diagnosis code.
Is the diagnosis code set?
Replace the electric steering lock and register the chassis number (Refer to GROUP 00 - Precautions before Service - How to Perform Chassis Number (Chassis No.) Writing ). Then go to Step 4.
Intermittent malfunction is suspected (Refer to GROUP 00 - How to Use Troubleshooting/Inspection Service Points - How to Cope with Intermittent Malfunction ).
 
STEP 4. Check whether the diagnosis code is set again.
Is the diagnosis code set?
Replace the KOS&OSS-ECU and register the ID codes (Refer to ).
The diagnosis is complete.