Subaru Legacy 2004 Service Manual page 1444

Diagnostic Procedure with Diagnostic Trouble Code (DTC)
BB:DTC P1110 ATMOSPHERIC PRESSURE SENSOR CIRCUIT MALFUNCTION
(LOW INPUT)
DTC DETECTING CONDITION:
Detect as soon as the malfunction occurs.
CAUTION:
After repair or replacement of faulty parts, conduct Clear Memory Mode <Ref. to EN(H4DOTC)(diag)-
30, OPERATION, Clear Memory Mode.> and Inspection Mode <Ref. to EN(H4DOTC)(diag)-28, PROCE-
DURE, Inspection Mode.>.
Step
1 CHECK ANY OTHER DTC ON DISPLAY.
BC:DTC P1111 ATMOSPHERIC PRESSURE SENSOR CIRCUIT MALFUNCTION
(HIGH INPUT)
DTC DETECTING CONDITION:
Detect as soon as the malfunction occurs.
CAUTION:
After repair or replacement of faulty parts, conduct Clear Memory Mode <Ref. to EN(H4DOTC)(diag)-
30, OPERATION, Clear Memory Mode.> and Inspection Mode <Ref. to EN(H4DOTC)(diag)-28, PROCE-
DURE, Inspection Mode.>.
Step
1 CHECK ANY OTHER DTC ON DISPLAY.
BD:DTC P1160 RETURN SPRING FAILURE
NOTE:
For diagnostic procedure, refer to DTC P2101. <Ref. to EN(H4DOTC)(diag)-176, DTC P2101 THROTTLE
ACTUATOR CONTROL MOTOR CIRCUIT RANGE/PERFORMANCE, Diagnostic Procedure with Diagnos-
tic Trouble Code (DTC).>
Check
Is DTC P1110 displayed on the
Subaru Select Monitor?
Check
Is DTC P1111 displayed on the
Subaru Select Monitor?
EN(H4DOTC)(diag)-155
ENGINE (DIAGNOSTICS)
Yes
Replace the ECM. Temporary poor
<Ref. to contact occurs.
FU(H4DOTC)-35,
Engine Control
Module (ECM).>
NOTE:
Atmospheric pres-
sure sensor is built
in ECM.
Yes
Replace the ECM. Temporary poor
<Ref. to contact occurs.
FU(H4DOTC)-35,
Engine Control
Module (ECM).>
NOTE:
Atmospheric pres-
sure sensor is built
in ECM.
No
No