Subaru IMPREZA 2004 Service Manual page 44

Diagnostic Procedure with Diagnostic Trouble Code (DTC)
R: DTC P0125 INSUFFICIENT COOLANT TEMPERATURE FOR CLOSED LOOP
FUEL CONTROL
• DTC DETECTING CONDITION:
• Two consecutive driving cycles with fault
• TROUBLE SYMPTOM:
• Engine would not return to idling.
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:
ENGINE
COOLANT
TEMPERATURE
SENSOR
E8
E2
B21
B83
*
B135 ECM
EN(H4SO)(diag)-121
*
1
LHD : 3
RHD : 2
ENGINE (DIAGNOSTICS)
E8
1 2
3
B21
1 2 3 4
5 6 7 8
9 10 11 12
13 14 15 16
19 20
17 18
B83
: LHD
1 2 3
4 5 6
B83
: RHD
1 2 3 4
B135
1 2 3 4 5 6 7
8 9 10 11 12 13 14 15 16 17 18 19
26 27 28
20 21 22 23 24 25
EN-01426