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Home >> Subaru >> 2013 >> Outback Base, Standard Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 39 (LAN Communication System (Diagnostics)) >> Diagnostic Procedure with Diagnostic Trouble Code (DTC) >> DTC U1321 Can-LS Meter No-Receive Data >> Diagnostic Procedure
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Diagnostic Procedure

WARNING: This page is about a different car, the 2013 Subaru Forester. However, it is still accessible from the selected car via links, so may be relevant.
DIAGNOSTIC PROCEDURE

Step Check Yes No
1 CHECK ALL DTCS. 
Read all DTCs using the Subaru Select Monitor.< Refer to OPERATION , Subaru Select Monitor. >		 Is U1300 or U1302 displayed? Perform the diagnosis according to DTC. Go to step 2  .
2 CHECK DTC. 
Read the DTC of body integrated unit using Subaru Select Monitor.		 Is U1321 a current malfunction? Go to step 3  . Go to step 7  .
3 CHECK DTC. 
  1. Turn the ignition switch to OFF.
  2. Disconnect all connectors (i84, i10, i88, i85 or i50) that are connected to low speed CAN communication line.
  3. Connect the disconnected connectors.
  4. Turn the ignition switch to ON.
  5. Read the DTC of body integrated unit using Subaru Select Monitor.
 Is U1321 a current malfunction? Go to step 4  . Go to step 7  .
4 CHECK HARNESS. 
  1. Turn the ignition switch to OFF.
  2. Disconnect all connectors (i84, i10, i88, i85 or i50) that are connected to low speed CAN communication line.
  3. Using the tester, check for open, short (power supply-output short, GND-output short) in the harness.

    Connector & terminal 

    (i84) No. 1 - (i10) No. 27 (combination meter): 

    (i84) No. 9 - (i10) No. 26 (combination meter): 

    (i84) No. 1 - (i88) No. 20 (A/C): 

    (i84) No. 9 - (i88) No. 19 (A/C): 

    (i84) No. 1 - (i85) No. 12 (audio): 

    (i84) No. 9 - (i85) No. 11 (audio): 

    (i84) No. 1 - (i50) No. 18 (navigation): 

    (i84) No. 9 - (i50) No. 6 (navigation): 

 Is harness normal? Go to step 5  . Repair or replace the harness.
5 CHECK COMBINATION METER. 
  1. Connect the disconnected connectors.
  2. Perform the self-diagnosis of combination meter.< Refer to SELF-DIAGNOSIS , INSPECTION, Combination Meter System. >
 Is the self diagnosis normal? Go to step 6  . Replace the combination meter.< Refer to REMOVAL , Combination Meter. >
6 CHECK DTC. 
  1. Turn the ignition switch to OFF.
  2. Disconnect all connectors (i84, i10, i88, i85 or i50) that are connected to low speed CAN communication line.
  3. Connect the disconnected connectors.
  4. Turn the ignition switch to ON.
  5. Read the DTC of body integrated unit using Subaru Select Monitor.
 Is U1321 a current malfunction? Replace the body integrated unit.< Refer to REMOVAL , Body Integrated Unit. > Go to step 7  .
7 CHECK DTC. 
  1. Turn the ignition switch to OFF.
  2. Shake the harness used for low speed CAN communication circuit.
  3. Turn the ignition switch to ON.
  4. Read the DTC of body integrated unit using Subaru Select Monitor.
 Is U1321 a current malfunction? Repair the poor contact, open circuit of harness or replace harness. Go to step 8  .
8 CHECK CONNECTOR. 
  1. Turn the ignition switch to OFF.
  2. Disconnect all connectors (i84, i10, i88, i85 or i50) that are connected to low speed CAN communication line.
 Is there poor contact of connector terminal? Repair the connector terminal, or replace harness. It is possible that temporary poor communication occurs.
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