LEMON Manuals: Even more car manuals for everyone
Home >> Subaru >> 2016 >> Outback 2.5i >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Communication Devices >> LAN Communication System (Diagnostics) >> Diagnostic Procedure with Diagnostic Trouble Code (DTC) >> DTC U0181 Lost Communication With Headlamp Leveling Control Module >> Trouble Symptom

DTC U0181 Lost Communication With Headlamp Leveling Control Module: Trouble Symptom

The auto headlight beam leveler or SRF does not operate normally.

DIAGNOSTICS PROCEDURE

Step Check Yes No
1 CHECK PERFORMING OF BASIC DIAGNOSTIC PROCEDURE.  Was the basic diagnostic procedure performed up to STEP 8? Go to step 2  . Perform the basic diagnostic procedure. < Ref. to BASIC DIAGNOSTIC PROCEDURE . >
2 CHECK DTC. 
Check the displayed DTC.		 Are DTCs other than U*** displayed? Perform the diagnosis according to DTC. Go to step 3  .
3 CHECK DTC. 
Check the displayed DTC.		 Is U0181 a current malfunction? Go to step 4  . Go to step 8  .
4 CHECK DTC. 
  1. Check CAN communication circuit. < Ref. to CAN COMMUNICATION CIRCUIT CHECK . >
  2. Read the DTC using Subaru Select Monitor.
 Is U0181 a current malfunction? Go to step 5  . Go to step 8  .
5 CHECK DTC. 
Using the Subaru Select Monitor, read DTC of all the systems.		 Is the auto headlight beam leveler data no-receive detected in several modules? Replace the auto headlight beam leveler control module or SRF control module. < Ref. to AUTO HEADLIGHT BEAM LEVELER CONTROL MODULE . > < Ref. to STEERING RESPONSIVE FOG LIGHTS control module . > Go to step 6  .
6 REPLACE MODULE. 
  1. Replace the auto headlight beam leveler control module or SRF control module.
  2. Read the DTC using Subaru Select Monitor.
 Is U0181 a current malfunction? Go to step 7  . System is normal.
7 CHECK MODULE. 
  1. Reinstall the auto headlight beam leveler control module or SRF control module.
  2. Replace the module that the DTC has been detected.
  3. Read the DTC using Subaru Select Monitor.
 Is U0181 a current malfunction? Replace the auto headlight beam leveler control module or SRF control module. < Ref. to AUTO HEADLIGHT BEAM LEVELER CONTROL MODULE . > < Ref. to STEERING RESPONSIVE FOG LIGHTS control module . > System is normal.
8 CHECK HARNESS. 
  1. Shake the harness, and check for poor contact.
  2. Read the DTC using Subaru Select Monitor.
 Is U0181 a current malfunction? Repair the poor contact of harness, or replace the harness. Go to step 9  .
9 CHECK CONNECTOR. 
Check the connector used for high speed CAN for poor contact.		 Is there poor contact of connector? Repair the connector that has poor contact, or replace harness. It is possible that temporary poor communication occurs. Delete the DTC.
scientia non olet · About LEMON Manuals