DTC B2788 IGN Signal Correlation (Steering Lock Control Module): Wiring Diagram
WARNING: This page is about a different car, the 2016 Subaru Outback and 2016 Subaru Legacy. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
For the coupling connector, refer to "WIRING SYSTEM".
Keyless access with push button start system < Ref. to appropriate wiring diagram in SYSTEM WIRING DIAGRAM article. >
Keyless access with push button start system < Ref. to appropriate wiring diagram in SYSTEM WIRING DIAGRAM article. >
DIAGNOSTICS PROCEDURE
| Step | Check | Yes | No |
|---|---|---|---|
| 1 CHECK FUSE. Check the fuse. < Ref. to INSPECTION , Relay and Fuse. > |
Is the fuse OK? | Go to step 2 . | Replace the fuse. When the replaced fuse is blown immediately, check the power supply circuit for short-circuited. |
| 2 CHECK CURRENT DATA. Check the current data display of «Keyless access with push button start» using Subaru Select Monitor. < Ref. to READ CURRENT DATA . > «IGN1/2 relay monitor (drive output)» |
Is the display normal according to the ignition switch operation? | Go to step 3 . | Go to step 5 . |
3 CHECK HARNESS (OPEN CIRCUIT).
|
Is the resistance less than 1 Ω? | Go to step 4 . | Repair or replace the open circuit of harness. |
4 CHECK HARNESS.
|
Is the voltage 11 - 14 V with IG ON? Is the voltage less than 1 V with IG OFF? |
Replace the steering lock control module. < Ref. to REMOVAL , Steering Lock control module. > | Check the DC power supply circuit. |
| 5 CHECK DTC. Read DTC using the Subaru Select Monitor. < Ref. to READ DIAGNOSTIC TROUBLE CODE (DTC) . > |
Is DTC B2271 displayed? | Perform the diagnosis according to DTC B2271. < Ref. to DTC B2271 IGN RELAY CONTROL CIRCUIT , Diagnostic Procedure with Diagnostic Trouble Code (DTC). > | Replace the keyless access control module. < Ref. to REMOVAL , Keyless Access control module. > |