LEMON Manuals: Even more car manuals for everyone
Home >> Subaru >> 2024 >> Ascent Limited >> Repair and Diagnosis >> Accessories & Equipment >> Communication Devices >> Body Control System (Diagnostics) >> Diagnostic Procedure with Diagnostic Trouble Code (DTC) >> DTC B1013: Ignition Power

DTC B1013: Ignition Power

DTC detecting condition: 

Voltage failure caused by poor contact of IGN power supply circuits

Trouble symptom: 

Symptoms such as shift lock or wiper not operating may occur.

Wiring diagram: 

Shift lock control system Ref. to WIRING SYSTEM>SHIFT LOCK CONTROL SYSTEM>WIRING DIAGRAM .

G16447353Courtesy of SUBARU OF AMERICA, INC.
CAUTION: Before performing diagnosis, refer to "CAUTION" in "General Description". Ref. to BODY CONTROL (DIAGNOSTICS)>GENERAL DESCRIPTION>CAUTION .
  1. CHECK DTC  .
    1. Turn the ignition switch to ON.
    2. Read the DTC of [Body Control] using the Subaru Select Monitor. Ref. to BODY CONTROL (DIAGNOSTICS)>DIAGNOSTIC TROUBLE CODE (DTC) .

    Is DTC B1013 displayed? (Current code)

    Yes:  Go to  2.

    No:  Go to  6.

  2. CHECK DTC  .
    1. Turn the ignition switch to OFF.
    2. Disconnect and then connect the body integrated unit connector.
    3. Wait approx. 2 minutes.
    4. Turn the ignition switch to ON.
    5. Read the DTC of [Body Control] using the Subaru Select Monitor. Ref. to BODY CONTROL (DIAGNOSTICS)>DIAGNOSTIC TROUBLE CODE (DTC) .

    Is DTC B1013 displayed? (Current code)

    Yes:  Go to  3.

    No:  Go to  6.

  3. CHECK FUSE  .
    1. Turn the ignition switch to OFF.
    2. Check the fuse.

    Is the check result OK?

    Yes:  Go to  4.

    No:  Replace the defective fuse.

  4. CHECK HARNESS  .
    1. Disconnect the F/B connector.
    2. Use a tester to measure the voltage between the battery and F/B connector.

      Connector & terminal 

      (B56) No. 8 (+) - Chassis ground (-):

    Is the voltage 8.5 - 16.5 V?

    Yes:  Replace the body integrated unit. Ref. to SECURITY AND LOCKS>BODY INTEGRATED UNIT .

    No:  Go to  5.

  5. CHECK RELAY  .

    Perform individual inspection of IG2 relay.

    Is the relay OK?

    Yes:  Repair the harness between F/B and M/B.

    No:  Replace the relay.

  6. CHECK CONNECTOR  .
    1. Turn the ignition switch to OFF.
    2. Disconnect the body integrated unit connector.

    Is there poor contact of connector?

    Yes:  Repair or replace the poor contact of connector.

    No:  Even if DTC is displayed, the circuit has returned to a normal condition at this time. Reproduce the failure, and then perform the diagnosis again.

    NOTE: In this case, temporary poor contact of connector, temporary open or short circuit of harness may be the cause.
scientia non olet · About LEMON Manuals