1 CHECK DTC.
Read the DTC of body integrated unit using Subaru Select Monitor.< Refer to
OPERATION , Subaru Select Monitor. > |
Are there DTC U1300 or U1302? |
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 U1301 a current malfunction? |
Go to step 3
. |
Go to step 9
. |
3 CHECK DTC.
- Turn the ignition switch to OFF.
- Disconnect all connectors (i84, i10, i88, i85 or i50) that are connected to low speed CAN communication line.
- Connect the disconnected connectors.
- Turn the ignition switch to ON.
- Read the DTC of body integrated unit using Subaru Select Monitor.
|
Is U1301 a current malfunction? |
Go to step 4
. |
Go to step 9
. |
4 CHECK HARNESS.
- Turn the ignition switch to OFF.
- Disconnect all connectors (i84, i10, i88, i85 or i50) that are connected to low speed CAN communication line.
- 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 AUDIO OR NAVIGATION.
- Connect the disconnected connectors.
- Disconnect the connector of navigation (i50) or audio (i85).
- Turn the ignition switch to ON.
- Read the DTC of body integrated unit using Subaru Select Monitor.
|
Is U1301 a current malfunction? |
Go to step 6
. |
Replace the audio or navigation.< Refer to
REMOVAL
, Audio. > |
6 CHECK AUTO A/C CONTROL MODULE.
- Turn the ignition switch to OFF.
- Connect the audio or navigation module.
- Disconnect the auto A/C control module connector (i88).
- Turn the ignition switch to ON.
- Read the DTC of body integrated unit using Subaru Select Monitor.
|
Is U1301 a current malfunction? |
Go to step 7
. |
Replace the auto A/C control module.< Refer to
REMOVAL
, Control Unit (Auto A/C Model). > |
7 CHECK COMBINATION METER.
- Turn the ignition switch to OFF.
- Connect the disconnected connectors.
- Perform the self-diagnosis of combination meter.< Refer to
SELF-DIAGNOSIS
, INSPECTION, Combination Meter System. >
|
Is the self-diagnosis of combination meter OK? |
Go to step 8
. |
Replace the combination meter.< Refer to
REMOVAL
, Combination Meter. > |
8 CHECK BODY INTEGRATED UNIT.
- Turn the ignition switch to OFF.
- Disconnect all connectors (i84, i10, i88, i85 or i50) that are connected to low speed CAN communication line.
- Connect the disconnected connectors.
- Turn the ignition switch to ON.
- Read the DTC of body integrated unit using Subaru Select Monitor.
|
Is U1301 a current malfunction? |
Replace the body integrated unit.< Refer to
REMOVAL
, Body Integrated Unit. > |
Go to step 9
. |
9 CHECK HARNESS.
- Turn the ignition switch to OFF.
- Shake the harness used for low speed CAN communication circuit.
- Turn the ignition switch to ON.
- Read the DTC of body integrated unit using Subaru Select Monitor.
|
Is U1301 a current malfunction? |
Repair or replace the harness. |
Go to step 10
. |
10 CHECK CONNECTOR.
- Turn the ignition switch to OFF.
- 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. |
Temporary communication failure occurs. |