DTC U1E07: Lost Communication Of Authentication Data With ECM/Pcm PU-Bus
DTC detecting condition:
The control module in which the DTC was detected does not receive data from ECM.
Trouble symptom:
The warning light of the control module in which the DTC was detected illuminates.
CAUTION:
Before performing diagnosis, refer to "CAUTION" in "General Description"
. Ref. to LAN SYSTEM (DIAGNOSTICS)>GENERAL DESCRIPTION>CAUTION
.
- CHECK DTC
.
- Turn the ignition switch to ON.
- Using the Subaru Select Monitor, perform the clear memory of the control module in which the DTC was detected. Ref. to COMMON (DIAGNOSTICS)>CLEAR MEMORY .
- Using the Subaru Select Monitor, read the DTC of the control module in which it was detected. Ref. to COMMON (DIAGNOSTICS)>DIAGNOSTIC TROUBLE CODE (DTC) .
Is a DTC other than DTC U1E07 recorded as current code?
Yes: Perform the diagnosis of DTCs other than DTC U1E07 first.
No: Go to 2.
- CHECK LAN SYSTEM
.
Perform the diagnosis for LAN system. Ref. to LAN SYSTEM (DIAGNOSTICS)>BASIC DIAGNOSTIC PROCEDURE>PROCEDURE .
Is the check result OK?
Yes: Finish the diagnosis.
No: In order to check poor contact of the control module in which the DTC was detected, reconnect it, Go to 1.
If the DTC is still detected, replace the control module in which the DTC was detected.