Code No. B1148
ESL power supply
Code No. B1154 ESL power supply fail(ESL)
DIAGNOSTIC FUNCTION
JUDGEMENT CRITERIA
Check Conditions
- At electric steering lock certification
- Short circuit (short to power supply) in the power supply (microcomputer) circuit
system of the electric steering lock is detected.
PROBABLE CAUSES
- Damaged harness wires and connectors
- Electric steering lock malfunction
- Malfunction of OSS-ECU
- LIN bus malfunction <B1148 is the past trouble>
DIAGNOSIS PROCEDURE |
STEP 1. Check of short to power supply, short of earth, and open circuit in PCO line between electric steering lock connector and OSS-ECU connector |
Q.
Is the check result normal?
|
Go to Step 2. |
|
Repair the connector(s) or wiring harness. |
|
STEP 2. After performing the locking and unlocking operations of the electric steering lock, recheck the diagnosis code. |
Q.
Is the diagnosis code set?
|
Replace the electric steering lock and register the chassis number (Refer to ).
Then go to Step 3. |
|
Go to Step 3. |
|
STEP 3. Check whether the diagnosis code is reset. |
Q.
Is the diagnosis code set?
|
Replace the OSS-ECU and register the chassis number (Refer to ). |
|
Intermittent malfunction is suspected (Refer to GROUP 00 - How to Use
Troubleshooting/Inspection Service Points - How to Cope with Intermittent Malfunction ) |
|