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

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. >

Fig 1: IGN Signal Correlation - Wiring Diagram (Steering Lock Control Module)

Courtesy of SUBARU OF AMERICA, INC.

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). 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 (i47) 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 (i47) No. 6 (+) - (i47) 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 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. >