[ Model - ECLIPSE CROSS / Year - 2018 ]
2018 / ECLIPSE CROSS / EC - Workshop Manual
42 -BODY > 42B-KEYLESS OPERATION SYSTEM (KOS) > TROUBLESHOOTING > DIAGNOSIS CODE PROCEDURES > B1138 Vehicle speed data fail
Code No.B1138 Vehicle speed data fail
 
 
caution
  • If diagnosis code No. B1138 is set, diagnose the CAN bus lines.
  • If diagnosis code No. B1138 is set, check whether diagnosis code No. B1156 is also set.
  • When replacing the ECU, always check that the communication circuit is normal.
 
 
DIAGNOSIS FUNCTION
When the engine-ECU receives invalid or no vehicle speed signal via CAN, the KOS&OSS-ECU will set diagnosis code No. B1138.
 
 
JUDGEMENT CRITERIA
Check Conditions
  • The power supply mode is at "ON" without cranking.
Judgement Criterion
  • Any of the following conditions is met, and two seconds or more have elapsed.
    • The system does not receive any vehicle speed signal from the engine-ECU.
    • The system receives invalid vehicle speed signal from the engine-ECU.
 
 
PROBABLE CAUSES
  • Damaged harness wires and connectors
  • Malfunction of engine-ECU
  • Malfunction of KOS&OSS-ECU
  • Malfunction of ASC-ECU
  • Defective vehicle speed sensor
 
 
DIAGNOSIS PROCEDURE
STEP 1. M.U.T.-IIISE CAN bus diagnostics
Use the M.U.T.-IIISE to diagnose the CAN bus lines.
Is the check result normal?
Go to Step 2.
Repair the CAN bus line (Refer to GROUP 54C - Troubleshooting ).
 
STEP 2. M.U.T.-IIISE diagnosis code
Check whether the KOS&OSS-ECU sets diagnosis code No. B1156.
Is the diagnosis code set?
Refer to Diagnosis code chart .
Go to Step 3.
 
STEP 3. M.U.T.-IIISE other system diagnosis code
(1) Check that the vehicle power can be turned "ON" and engine is started.
(2) Check the diagnosis code of engine-ECU.
Is the diagnosis code set?
Troubleshoot the engine-ECU (Refer to GROUP 13A - Troubleshooting ). Then go to Step 4.
Go to Step 4.
 
STEP 4. Check whether the diagnosis code is set again.
Check again if the diagnosis code is set in the KOS&OSS-ECU.
(1) Erase the diagnosis code.
(2) Turn the power supply mode of the engine switch from "OFF" to "ON".
(3) On completion, check that the diagnosis code is not set again.
Is the diagnosis code set?
Replace the KOS&OSS-ECU and register the ID codes (Refer to ).
Intermittent malfunction is suspected (Refer to GROUP 00 - How to Use Troubleshooting/Inspection Service Points - How to Cope with Intermittent Malfunction ).