Subaru 2009 IMPREZA Service Manual page 3414

Diagnostic Procedure with Diagnostic Trouble Code (DTC)
T: DTC U1321 CAN-LS METER NO-RECEIVE DATA
DTC DETECTING CONDITION:
Not received data from meter.
TROUBLE SYMPTOM:
Engine may not be started.
WIRING DIAGRAM:
BODY INTEGRATED
1 2
9 10 11 12
24 25
Step
1 CHECK ALL DTCS.
Read all DTCs using the Subaru Select Monitor.
<Ref. to LAN(diag)-15, READ DIAGNOSTIC
TROUBLE CODE (DTC), OPERATION, Subaru
Select Monitor.>
2 CHECK DTC.
Read the DTC of body integrated unit using
Subaru Select Monitor.
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.
TWISTED PAIR LINE
A9
UNIT
A1
A:
i84
A: i84
3 4 5 6 7 8
13 14 15 16 17 18 19 20 21 22 23
26 27 28 29 30 31 32 33 34 35
LAN(diag)-81
26
27
i10
i10
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40
Check
Is DTC U1300 or U1302 dis-
played?
Is U1321 a current malfunc-
tion?
Is U1321 a current malfunc-
tion?
LAN SYSTEM (DIAGNOSTICS)
COMBINATION
METER
Yes No
Perform the diag- Go to step 2.
nosis according to
DTC.
Go to step 3. Go to step 7.
Go to step 4. Replace the com-
bination meter.
<Ref. to IDI-16,
REMOVAL, Com-
bination Meter.>
LAN00292