1995 SUBARU LEGACY air condition

OBD0371
AJ: DTC P0507
—IDLE CONTROL SYSTEM RPM HIGHER
THAN EXPECTED (ISC
—H)—
DESCRIPTION:
Refer to“AH: DTC P0505—IDLE CONTROL SYSTEM
MALFUNCTION—[T11AH0]”.
DTC DETECTING CONDITION:

Two consecutive trips with fault
TROUBLE SYMPTOM:

Engine keeps running at higher revolution than specified
idling revolution.
1.Check DTC P0505 on display.
No
Ye s

Inspect DTC P0505 using“11. Diagnostics Chart
with Trouble Code [T1100]”.

In this case, it is unnecessary to inspect DTC
P0507.
2.Check air intake system.
CAUTION:
After repair or replacement of faulty parts, conduct
CLEAR MEMORY and INSPECTION MODES. [T3D0] and [T3E0].>

264
2-7ON-BOARD DIAGNOSTICS II SYSTEM
11. Diagnostics Chart with Trouble Code

AK: DTC P0600
—SERIAL COMMUNICATION LINK
MALFUNCTION—
DESCRIPTION:
The serial communication link circuit monitors data com-
munication between scan tool and ECM.
DTC DETECTING CONDITION:

Two consecutive trips with fault
1.Check harness.
CAUTION:
After repair or replacement of faulty parts, conduct
CLEAR MEMORY and INSPECTION MODES. [T3D0] and [T3E0].>
WIRING DIAGRAM:

LHD model
B2M0627
266
2-7ON-BOARD DIAGNOSTICS II SYSTEM
11. Diagnostics Chart with Trouble Code

OBD0723A
4) Measure resistance between ECM harness connector
and body.
: Connector & terminal
(B84) No. 41—Body / 10Ω, or less
: Repair short circuit of harness between ECM con-
nector and data link connector.
: Repair poor contact in ECM connector and data
link connector.
OBD0376
AL: DTC P0601
—INTERNAL CONTROL MODULE MEMORY
CHECK SUM ERROR (RAM)—
DESCRIPTION:
The RAM monitors the ECM microcomputer operation.
DTC DETECTING CONDITION:

Two consecutive trips with fault
TROUBLE SYMPTOM:

Engine does not start.

Engine stalls.
1.Check DTC P0601 on display.
Ye s
Replace ECM.
CAUTION:
After repair or replacement of faulty parts, conduct
CLEAR MEMORY and INSPECTION MODES. [T3D0] and [T3E0].>

268
2-7ON-BOARD DIAGNOSTICS II SYSTEM
11. Diagnostics Chart with Trouble Code

OBD0586
AM: DTC P0703
—BRAKE SWITCH INPUT MALFUNCTION
(BRK)—
DTC DETECTING CONDITION:

Two consecutive trips with fault
1.Check operation of brake light.
2.Check harness connector between TCM and
brake light switch.
3.Check input signal for TCM.
CAUTION:
After repair or replacement of faulty parts, conduct
CLEAR MEMORY and INSPECTION MODES. [T3D0] and [T3E0].>
WIRING DIAGRAM:
OBD0587


271
2-7ON-BOARD DIAGNOSTICS II SYSTEM
11. Diagnostics Chart with Trouble Code

DTC DETECTING CONDITION:

Two consecutive trips with fault
TROUBLE SYMPTOM:

Shift point too high or too low; engine brake not effected
in“3”range; excessive shift shock; excessive tight corner
“braking”
1.Check any other DTC (besides DTC P0731,
P0732, P0733, P0734) on display.
2.Check throttle position sensor circuit. “3-2 [T7L0]”.>
3.Check vehicle speed sensor 1 circuit. “3-2 [T7M0]”.>
4.Check vehicle speed sensor 2 circuit. “3-2 [T7N0]”.>
5.Check engine speed input circuit. [T7I0]”.>
CAUTION:
After repair or replacement of faulty parts, conduct
CLEAR MEMORY and INSPECTION MODES. [T3D0] and [T3E0].>




286
2-7ON-BOARD DIAGNOSTICS II SYSTEM
11. Diagnostics Chart with Trouble Code

OBD0458
BC: DTC P1100
—STARTER SWITCH CIRCUIT
MALFUNCTION (ST
—SW)—
DTC DETECTING CONDITION:

Two consecutive trips with fault
TROUBLE SYMPTOM:

Failure of engine to start
1.Check operation of starter motor.
CAUTION:
After repair or replacement of faulty parts, conduct
CLEAR MEMORY and INSPECTION MODES. [T3D0] and [T3E0].>
WIRING DIAGRAM:
OBD0098
309
2-7ON-BOARD DIAGNOSTICS II SYSTEM
11. Diagnostics Chart with Trouble Code

OBD0466
BD: DTC P1101
—NEUTRAL POSITION SWITCH CIRCUIT
MALFUNCTION [MT VEHICLES] (N
—SW)—
DTC DETECTING CONDITION:

Two consecutive trips with fault
TROUBLE SYMPTOM:

Erroneous idling
1.Check input signal for ECM.
2.Check neutral position switch.
3.Check harness connector between ECM and
neutral position switch.
CAUTION:
After repair or replacement of faulty parts, conduct
CLEAR MEMORY and INSPECTION MODES. [T3D0] and [T3E0].>


311
2-7ON-BOARD DIAGNOSTICS II SYSTEM
11. Diagnostics Chart with Trouble Code

OBD0473
BE: DTC P1101
—NEUTRAL POSITION SWITCH CIRCUIT
MALFUNCTION [AT VEHICLES] (N
—SW)—
DESCRIPTION:
Refer to“AN: DTC P0705—TRANSMISSION RANGE
SENSOR CIRCUIT MALFUNCTION—[T11AN0]”.
DTC DETECTING CONDITION:

Two consecutive trips with fault
TROUBLE SYMPTOM:

Erroneous idling
1.Check input signal for ECM.
2.Check harness connector between ECM and
inhibitor switch.
3.Check inhibitor switch.
CAUTION:
After repair or replacement of faulty parts, conduct
CLEAR MEMORY and INSPECTION MODES. [T3D0] and [T3E0].>


315
2-7ON-BOARD DIAGNOSTICS II SYSTEM
11. Diagnostics Chart with Trouble Code