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HOMESERVICE MANUALSSUBARU2016LEGACY 2.5IREPAIR AND DIAGNOSIS (SINGLE PAGE)ACCESSORIES & EQUIPMENTENTERTAINMENT SYSTEMSINFOTAINMENT SYSTEM (DIAGNOSTICS)DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)DTC B2244 AMPLIFIER COMMUNICATIONWIRING DIAGRAM
2016 Subaru Legacy 2.5i

DTC B2244 Amplifier Communication: Wiring Diagram

2016 Subaru Legacy 2.5iSECTION Wiring Diagram

Audio system < Ref. to appropriate wiring diagram in SYSTEM WIRING DIAGRAMS article. >

Navigation system < Ref. to appropriate wiring diagram in SYSTEM WIRING DIAGRAMS article. >

Fig 1: Amplifier Communication - Wiring Diagram
G10277292Courtesy of SUBARU OF AMERICA, INC.
DIAGNOSTIC PROCEDURE

Step Check Yes No
1 CHECK FUSE. 
Check the fuse. < Ref. to RELAY AND FUSE . >		 Is there any fault? Replace the fuse. If the replaced fuse blows out easily, repair the ground short circuit in the harness between the battery and audio amplifier. Go to step 2  .
2 CHECK HARNESS (OPEN CIRCUIT). 
  1. Disconnect the audio (7-inch display) connector or navigation unit connector.
  2. Disconnect the amplifier connector.
  3. Using the tester, measure the resistance of harness between audio (7-inch display) connector or navigation unit connector and audio amplifier connector.

    Connector & terminal 

    (i87) No. 7 - (i262) No. 8: 

    (i87) No. 8 - (i262) No. 7: 

 Is the resistance less than 1 Ω? Go to step 3  . Repair the open circuit of harness between audio (7-inch display) connector or navigation unit connector and audio amplifier connector.
3 CHECK HARNESS (GROUND SHORT CIRCUIT). 
Using the tester, measure the resistance between audio (7-inch display) connector or navigation unit connector and chassis ground.
Connector & terminal 
(i87) No. 7 - Chassis ground: 
(i87) No. 8 - Chassis ground: 		 Is the resistance 1 MΩ or more? Go to step 4  . Repair the short to ground in harness between audio (7-inch display) connector or navigation unit connector and audio amplifier connector.
4 CHECK HARNESS (SHORT CIRCUIT TO POWER SUPPLY). 
  1. Turn the ignition switch to ON.
  2. Using the tester, measure the voltage between audio (7-inch display) connector or navigation unit connector and chassis ground. (With each connector disconnected)

    Connector & terminal 

    (i87) No. 7 (+) - Chassis ground (-): 

    (i87) No. 8 (+) - Chassis ground (-): 

 Is the voltage less than 1 V? Go to step 5  . Repair the short to power supply in harness between audio (7-inch display) connector or navigation unit connector and audio amplifier connector.
5 CHECK DTC. 
  1. Connect all the disconnected connectors.
  2. Perform the Clear Memory Mode. < Ref. to CLEAR MEMORY MODE . >
  3. Turn the ignition switch to OFF → ON.
  4. Read the DTC again. < Ref. to READ DIAGNOSTIC TROUBLE CODE (DTC) . >
 Is DTC B2244 displayed? (Current malfunction) Replace the audio amplifier. 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.
RENDER: 1.0x

NO RELATED

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