[ Model - ECLIPSE CROSS / Year - 2018 ]
2018 / ECLIPSE CROSS / EC - Workshop Manual
52 -INTERIOR AND SUPPLEMENTAL RESTRAINT SYSTEM(SRS) > 52B-SUPPLEMENTAL RESTRAINT SYSTEM (SRS) > TROUBLESHOOTING > DIAGNOSIS CODE PROCEDURES > DTC U1190 No receive fault detect signal
Code No. U1190: No receive fault detect signal
 
 
caution
  • If the diagnosis code No. U1190 is set, diagnose the CAN bus lines.
  • When replacing the ECU, always check that the SRS circuit is normal.
 
 
TROUBLE JUDGEMENT
ETACS-ECU sends the diagnosis code (U code) detection permission or prohibition signal to each ECU connected to the CAN bus line. If the SRS-ECU cannot receive the diagnosis code (U code) detection permission or prohibition signal for 5 seconds after turning the ignition switch to the ON position, diagnosis code U1190 will be set.
 
 
PROBABLE CAUSES
  • Malfunction of CAN bus line
  • Malfunction of SRS-ECU
  • Malfunction of the ETACS-ECU
 
 
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 other system diagnosis code
Check again if the diagnosis code is set in the ETACS-ECU.
Is the diagnosis code set?
Diagnose the ETACS-ECU (Refer to GROUP 54A - ETACS, Troubleshooting ).
Go to Step 3
 
STEP 3. Diagnosis code recheck
Check again if the diagnosis code is set in the SRS-ECU.
(1) Erase the diagnosis code.
(2) Turn the ignition switch from the "LOCK" (OFF) position to the "ON" position.
(3) Check if the diagnosis code is set.
Is the diagnosis code set?
Replace the ETACS-ECU. (Refer to GROUP 54A - ETACS, ETACS-ECU ). After replacing the ECU, carry out the CAN bus diagnostics. Then go to Step 4.
A poor connection, open circuit or other intermittent malfunction in the CAN bus line between the ETACS-ECU and the SRS-ECU. (Refer to GROUP 00 - How to Use Troubleshooting/Inspection Service Points - How to Cope with Intermittent Malfunction .)
 
STEP 4. Diagnosis code recheck
Check again if the diagnosis code is set in the SRS-ECU.
(1) Erase the diagnosis code.
(2) Turn the ignition switch from the "LOCK" (OFF) position to the "ON" position.
(3) Check if the diagnosis code is set.
Is the diagnosis code set?
Replace the SRS-ECU (Refer to ). After replacing the ECU, carry out the CAN bus diagnostics.
A poor connection, open circuit or other intermittent malfunction in the CAN bus line between the SRS-ECU and the ETACS-ECU. (Refer to GROUP 00 - How to Use Troubleshooting/Inspection Service Points - How to Cope with Intermittent Malfunction .)