DTC B1100 INTEG. Unit System Error: Trouble Symptom
- Check light comes on in the combination meter, and displays communication error display "Er IU". (Except for meter with MID)
- LAN communication immobilizer function may not be executed normally.
DIAGNOSIS PROCEDURE CHART
| Step | Check | Yes | No |
|---|---|---|---|
| 1 CHECK DTC. Check the DTC displayed in the body integrated unit. |
Is the DTC displayed a current malfunction? | Check the connection of body integrated unit. Go to step 2. | Go to step 2. |
| 2 CHECK DTC. Turn the ignition switch to OFF and read DTCs again. |
Is the DTC displayed a current malfunction? | Go to step 4. | Go to step 3. |
| 3 CHECK CURRENT DATA. Using the Subaru Select Monitor, display engine speed and vehicle speed signal from ECM, TCM, VDC/ABS and body integrated unit under the same conditions and compare data. |
Do all data values match? | Temporary poor contact occurs. Perform the Clear Memory operation. | Go to step 4. |
| 4 CHECK ALL DTCS. | Is DTC concerning ECM displayed? | Go to step 5. | Replace the body integrated unit. Refer to BODY INTEGRATED UNIT . |
| 5 CHECK DTC CONCERNING ECM. | Is output DTC on ECM concerning CAN communication failure? | Replace the body integrated unit. Refer to BODY INTEGRATED UNIT . | Perform the diagnosis according to DTC concerning ECM. |