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Home >> Subaru >> 2013 >> Legacy Premium, Automatic CVT Trans >> Repair and Diagnosis >> Body & Frame >> Door Locks >> Security And Locks - Keyless Access (W/Push Button Start) (Diagnostics) >> Diagnostic Procedure with Diagnostic Trouble Code (DTC) >> DTC B2782 Steering Lock Power Supply Circuit Abnormal (Smart Ecu-Side Abnormal) >> Diagnostic Procedure

Diagnostic Procedure

DIAGNOSTIC PROCEDURE

Step Check Yes No
1 CHECK STEERING LOCK CM. 
  1. Disconnect the steering lock CM connector.
  2. Using a tester, measure the resistance between the steering lock CM connector and chassis ground.

    Connector & terminal 

    (B424) No. 1 - Chassis ground: 

 Is the resistance less than 1 Ω? Go to step 2  . Repair or replace the open circuit of harness.
2 CHECK CURRENT DATA. 
  1. Connect the steering lock CM connector.
  2. ACC OFF, IGN OFF, shift position in P
  3. Using a tester, open the door, and measure the voltage between terminals of steering CM connector when the steering lock motor is driven.

    Connector & terminal 

    (B424) No. 3 (+) - (B424) No. 1 (-): 

 Does the voltage change as follows? Steering lock motor in operation: 1 V or less → Steering lock motor is stopped: 11 - 14 V Go to step 3  . Go to step 4  .
3 CHECK DTC. 
  1. Turn the ignition switch to ON.
  2. Using the Subaru Select Monitor, clear the memory.
  3. Turn the ignition switch to OFF.
  4. Disconnect the battery ground cable and reconnect it, and then clear the abnormal information displayed on the data monitor.
  5. Turn the ignition switch to ON.
  6. Use the Subaru Select Monitor and read DTCs.
 Is B2782 displayed? Replace the steering lock CM. < Refer to STEERING LOCK CM . > System is normal. It is possible that temporary poor contact occurs.
4 CHECK CONNECTOR. 
  1. Disconnect the steering lock CM connector.
  2. Disconnect the keyless access CM connector.
 Are connectors normal? Go to step 5  . Repair or replace the connector.
5 CHECK HARNESS. 
Using a tester, measure the resistance between steering lock CM connector and keyless access CM connector.
Connector & terminal 
(i242) No. 29 - (B424) No. 3: 		 Is the resistance less than 1 Ω? Go to step 6  . Repair or replace the open circuit of harness.
6 CHECK HARNESS. 
Using a tester, measure the resistance between steering lock CM connector and chassis ground, and between keyless access CM connector and chassis ground.
Connector & terminal 
(B424) No. 3 - Chassis ground: 
(i242) No. 29 - Chassis ground: 		 Is the resistance 10 kΩ or more? Replace the keyless access CM. < Refer to KEYLESS ACCESS CM . > Repair or replace the short circuit of the harness.
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