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DTC B2788 IGN Signal Correlation (Steering Lock Control Module): Wiring Diagram

Push button start system < Ref. to the appropriate SYSTEM WIRING diagram article, Push Button Start System. >

Fig 1: IGN Signal Correlation (Steering Lock CONTROL MODULE) - Wiring Diagram

G10219822

Courtesy of SUBARU OF AMERICA, INC.

DIAGNOSTIC PROCEDURE

Step	Check	Yes	No
1 CHECK FUSE. Check the fuse. < Ref. to 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 . > «IGN SW»	Is the display normal according to the ignition switch operation?	Go to step 3.	Go to step 5.
3 CHECK HARNESS (OPEN CIRCUIT). Disconnect the steering lock CONTROL MODULE connector. Using a tester, measure the resistance between the steering lock CONTROL MODULE connector and chassis ground. Connector & terminal (B424) No. 1 - Chassis ground:	Is the resistance less than 1 Ω?	Go to step 4.	Repair or replace the open circuit of harness.
4 CHECK HARNESS. Connect the steering lock CONTROL MODULE connector. Using the tester, measure the voltage between terminals. Connector & terminal (B424) No. 6 (+) - (B424) No. 1 (-):	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 the DTC using 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. >