1995 SUBARU LEGACY Service Repair Manual

Page 1393 of 2248

SUBARU LEGACY 1995  Service Repair Manual WIRING DIAGRAM:
RHD model
B2M0451
187
2-7ON-BOARD DIAGNOSTICS II SYSTEM
11. Diagnostics Chart with Trouble Code

Page 1394 of 2248

SUBARU LEGACY 1995  Service Repair Manual 1
CHECK DTC P0130 ON DISPLAY.
: Check that Subaru Select Monitor or the
OBD-II general scan tool shows P0130.
: Go to step 2.
: Go to step 3.
2
CHECK FAILURE CAUSE OF P0130.
Perform the step 1 of DTC

Page 1395 of 2248

SUBARU LEGACY 1995  Service Repair Manual 4
CHECK HARNESS.
1) Turn ignition switch to OFF.
2) Disconnect connector from rear oxygen sensor.
3) Turn ignition switch to ON.
OBD0707A
4) Measure voltage between rear oxygen sensor harness
connecto

Page 1396 of 2248

SUBARU LEGACY 1995  Service Repair Manual OBD0229
N: DTC P0139
—REAR OXYGEN SENSOR CIRCUIT SLOW
RESPONSE (RO2
—R)—
DESCRIPTION:
Refer to“M: DTC P0136—REAR OXYGEN SENSOR
CIRCUIT MALFUNCTION—[T11M0]”.
DTC DETECTING CONDITION:
Two

Page 1397 of 2248

SUBARU LEGACY 1995  Service Repair Manual 1.Check DTC P0136 on display.
No
Ye s
Inspect DTC P0136 using“11. Diagnostics Chart
with Trouble Code [T1100]”.
In this case, it is unnecessary to inspect DTC
P0139.
2.Replace rear oxygen senso

Page 1398 of 2248

SUBARU LEGACY 1995  Service Repair Manual WIRING DIAGRAM:
RHD model
B2M0451
192
2-7ON-BOARD DIAGNOSTICS II SYSTEM
11. Diagnostics Chart with Trouble Code

Page 1399 of 2248

SUBARU LEGACY 1995  Service Repair Manual OBD0232
O: DTC P0141
—REAR OXYGEN SENSOR HEATER
CIRCUIT MALFUNCTION (RO2H)—
DESCRIPTION:
Refer to“M: DTC P0136—REAR OXYGEN SENSOR
CIRCUIT MALFUNCTION—[T11M0]”.
DTC DETECTING CONDITION:
Tw

Page 1400 of 2248

SUBARU LEGACY 1995  Service Repair Manual 1.Connect Subaru Select Monitor or the OBD-II
general scan tool, and read data.
2.Check output signal from ECM. (Using voltage
meter.)
3.Check power supply to rear oxygen sensor.
4.Check rear oxygen s