DTC U0327: Software Incompatibility With Vehicle Security Control Module

WARNING: This page is about a different variant/trim than selected.

DTC detecting condition:

No data is received from keyless access control module.

Trouble symptom:

Cooperation control of keyless access does not operate properly.

CAUTION: Before performing diagnosis, refer to "CAUTION" in "General Description". Ref. to LAN SYSTEM (DIAGNOSTICS) (HEV)>GENERAL DESCRIPTION>CAUTION .

CHECK CAN COMMUNICATION HARNESS .
Perform the basic diagnostic procedure to check for fault in CAN communication harness. Ref. to LAN SYSTEM (DIAGNOSTICS) (HEV)>BASIC DIAGNOSTIC PROCEDURE .

Was the basic diagnostic procedure performed up to step 7?

Yes: Go to 2.

No: Perform the basic diagnostic procedure. Ref. to LAN SYSTEM (DIAGNOSTICS) (HEV)>BASIC DIAGNOSTIC PROCEDURE .
CHECK DTC (OTHER THAN U-CODE) .
Check the displayed DTC.

Is DTC other than U*** displayed? (Current malfunction)

Yes: Perform the diagnosis for DTCs other than the displayed U-code.

No: Go to 3.
CHECK DTC .
Check the displayed DTC.

Is DTC U0327 displayed? (Current malfunction)

Yes: Go to 4.

No: Go to 6.
CHECK DTC .
1. Check CAN communication circuit. Ref. to LAN SYSTEM (DIAGNOSTICS) (HEV)>CAN COMMUNICATION CIRCUIT CHECK .
2. Using the Subaru Select Monitor, read all DTCs. Ref. to LAN SYSTEM (DIAGNOSTICS) (HEV)>DIAGNOSTIC TROUBLE CODE (DTC) .
Is DTC U0327 displayed? (Current malfunction)

Yes: Go to 5.

No: Go to 6.
CHECK DTC .
Using the Subaru Select Monitor, read all DTCs. Ref. to LAN SYSTEM (DIAGNOSTICS) (HEV)>DIAGNOSTIC TROUBLE CODE (DTC) .

Is DTC U0327 detected in several modules? (Current malfunction)

Yes: Replace the keyless access control module. Ref. to SECURITY AND LOCKS>KEYLESS ACCESS CONTROL MODULE .

No: Replace the module that the DTC has been detected.
CHECK HARNESS .
1. Shake the harness, and check for poor contact.
2. Using the Subaru Select Monitor, read all DTCs. Ref. to LAN SYSTEM (DIAGNOSTICS) (HEV)>DIAGNOSTIC TROUBLE CODE (DTC) .
Is DTC U0327 displayed? (Current malfunction)

Yes: Repair the poor contact of harness, or replace the harness.

No: Go to 7.
CHECK CONNECTOR .
Check the connector used for high speed CAN for poor contact.

Is there poor contact of connector?

Yes: Repair the connector that has poor contact, or replace harness.

No: It is possible that temporary poor communication occurs. Delete the DTC.