Subaru 2002 IMPREZA Service Manual page 916

DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)
ENGINE (DIAGNOSTICS)
G: DTC 26 INTAKE AIR TEMPERATURE SENSOR
• DIAGNOSIS:
• The intake air temperature sensor signal is abnormal.
• The harness connector between ECM and intake air temperature sensor is open or shorted.
• TROUBLE SYMPTOM:
• Hard to start
• Erroneous idling
• Poor driving performance
CAUTION:
After repair or replacement of faulty parts, conduct CLEAR MEMORY and INSPECTION MODES. <Ref.
to EN(w/oOBD)-30, OPERATION, Clear Memory Mode.> and <Ref. to EN(w/oOBD)-28, OPERATION,
Inspection Mode.>
• WIRING DIAGRAM:
LHD
4
1
LHD
B122
4
7
B83
INTAKE AIR
TEMPERATURE
AND
PRESSURE
SENSOR
E20
E2
B21
E20
RHD
RHD
LHD RHD
LHD RHD
B136 ECM
EN(w/oOBD)-82
5
4
1
3
B83
E20
1 2 3 4
B122
1 2 3
4 5 6
LHD: B83
1 2 3
4 5 6
RHD: B83
1 2 3 4 5 6 7 8 9 10 11 12
B21
1 2 3 4
5 6 7 8
9 10 11 12
13 14 15 16
17 18 19 20
B136
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
EN1458