Subaru IMPREZA 2004 Service Manual page 537

Diagnostic Procedure with Diagnostic Trouble Code (DTC)
ENGINE (DIAGNOSTICS)
BS:DTC P0865 TCM COMMUNICATION CIRCUIT LOW
• DTC DETECTING CONDITION:
• Two consecutive driving cycles with fault
CAUTION:
After repair or replacement of faulty parts, conduct Clear Memory Mode <Ref. to EN(H4SO)(diag)-47,
OPERATION, Clear Memory Mode.> and Inspection Mode <Ref. to EN(H4SO)(diag)-40, OPERATION,
Inspection Mode.>.
• WIRING DIAGRAM:
B56
B137 ECM
TCM
EN(H4SO)(diag)-228
B56
1 2 3 4 5 6 7 8 9
10 11 12 13 14 15 16 17 18
19 20 21 22 23 24
B137
3 4
1 2
5 6 7 8 9 10 11 12 13
14 15 16 17 18 19 20
EN-01600