1997 SUBARU LEGACY sensor

B2M1137
CS: DTC P1442
—FUEL LEVEL SENSOR CIRCUIT RANGE/
PERFORMANCE PROBLEM 2—
DTC DETECTING CONDITION:

Two consecutive driving cycles with fault
WIRING DIAGRAM:
B2M0933
CAUTION:
After repair or replacement of faulty parts, conduct
CLEAR MEMORY and INSPECTION MODES.

393
2-7ON-BOARD DIAGNOSTICS II SYSTEM
10. Diagnostic Chart with Trouble Code for LHD Vehicles

B2M1142
CX: DTC P1540
—VEHICLE SPEED SENSOR MALFUNCTION
2—
DTC DETECTING CONDITION:

Immediately at fault recognition
WIRING DIAGRAM:
B2M1285
CAUTION:
After repair or replacement of faulty parts, conduct
CLEAR MEMORY and INSPECTION MODES.

407
2-7ON-BOARD DIAGNOSTICS II SYSTEM
10. Diagnostic Chart with Trouble Code for LHD Vehicles

10CX1CHECK SPEEDOMETER OPERATION IN
COMBINATION METER.
: Does speedometer operate normally?
: Go to step10CX2.
: Check speedometer and vehicle speed sensor
.
B2M0573A
10CX2CHECK HARNESS BETWEEN ECM AND
COMBINATION METER CONNECTOR.
1) Turn ignition switch to OFF.
2) Disconnect connector from TCM.
3) Turn ignition switch to ON.
4) Measure voltage between ECM and chassis ground.
: Connector & terminal
(B84) No. 83 (+)—Chassis ground ():
Is the voltage more than 2 V?
: Repair harness and connector.
NOTE:
In this case, repair the following:

Open circuit in harness between ECM and combination
meter connector

Poor contact in ECM connector

Poor contact in combination meter connector

Poor contact in coupling connector (B37)
: Go to step10CX3.
B2M0574A
10CX3CHECK HARNESS BETWEEN ECM AND
COMBINATION METER CONNECTOR.
1) Turn ignition switch to OFF.
2) Disconnect connector from ECM.
3) Measure resistance of harness between ECM connec-
tor and chassis ground.
: Connector & terminal
(B84) No. 83—Chassis ground:
Is the resistance less than 10Ω?
: Repair ground short circuit in harness between
ECM and combination meter connector.
: Repair poor contact in ECM connector.
408
2-7ON-BOARD DIAGNOSTICS II SYSTEM
10. Diagnostic Chart with Trouble Code for LHD Vehicles

OBD0501
CY: DTC P1700
—THROTTLE POSITION SENSOR CIRCUIT
MALFUNCTION FOR AUTOMATIC
TRANSMISSION—
DTC DETECTING CONDITION:

Two consecutive driving cycles 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”
WIRING DIAGRAM:
B2M0613
CAUTION:
After repair or replacement of faulty parts, conduct
CLEAR MEMORY and INSPECTION MODES.

409
2-7ON-BOARD DIAGNOSTICS II SYSTEM
10. Diagnostic Chart with Trouble Code for LHD Vehicles

10CY1
CHECK DTC P1700 ON DISPLAY.
: Does the Subaru select monitor or OBD-II
general scan tool indicate DTC P1700?
: Check throttle position sensor circuit. [T7K0].>
: It is not necessary to inspect DTC P1700.
410
2-7ON-BOARD DIAGNOSTICS II SYSTEM
10. Diagnostic Chart with Trouble Code for LHD Vehicles

11. Diagnostic Chart with Trouble Code
for RHD Vehicles
A: DIAGNOSTIC TROUBLE CODE (DTC) LIST
DTC
No.Abbreviation
(Subaru Select Monitor)Item Page
P0101 QA
—RLOW Mass air flow sensor circuit range/performance problem (low input) 426
P0102 QA
—LOW Mass air flow sensor circuit low input 427
P0103 QA
—HI Mass air flow sensor circuit high input 428
P0106 PS
—R2 Pressure sensor circuit range/performance problem 429
P0107 P
—SLOW Pressure sensor circuit low input 430
P0108 P
—SHI Pressure sensor circuit high input 431
P0116 TW
—LOW Engine coolant temperature sensor circuit low input 432
P0117 TW
—HI Engine coolant temperature sensor circuit high input 433
P0121 TH
—RHI Throttle position sensor circuit range/performance problem (high input) 434
P0122 THV
—LOW Throttle position sensor circuit low input 435
P0123 THV
—HI Throttle position sensor circuit high input 436
P0125 TW
—CL Insufficient coolant temperature for closed loop fuel control 437
P0130 FO2
—V Front oxygen sensor circuit malfunction 438
P0133 FO2
—R Front oxygen sensor circuit slow response 439
P0135 FO2H Front oxygen sensor heater circuit malfunction 440
P0136 RO2
—V Rear oxygen sensor circuit malfunction 441
P0139 RO2
—R Rear oxygen sensor circuit slow response 442
P0141 RO2H Rear oxygen sensor heater circuit malfunction 443
P0170 FUEL Fuel trim malfunction 444
P0181 TNKT
—F Fuel temperature sensor A circuit range/performance problem 445
P0182 TNKT
—LOW Fuel temperature sensor A circuit low input 447
P0183 TNKT
—HI Fuel temperature sensor A circuit high input 450
P0261 INJ1 Fuel injector circuit low input - #1 453
P0262 INJ1
—HI Fuel injector circuit high input - #1 455
P0264 INJ2 Fuel injector circuit low input - #2 453
P0265 INJ2
—HI Fuel injector circuit high input - #2 455
P0267 INJ3 Fuel injector circuit low input - #3 453
P0268 INJ3
—HI Fuel injector circuit high input - #3 455
P0270 INJ4 Fuel injector circuit low input - #4 453
P0271 INJ4
—HI Fuel injector circuit high input - #4 455
P0301 MIS
—1 Cylinder 1 misfire detected 457
P0302 MIS
—2 Cylinder 2 misfire detected 457
P0303 MIS
—3 Cylinder 3 misfire detected 457
P0304 MIS
—4 Cylinder 4 misfire detected 457
P0325 KNOCK Knock sensor circuit malfunction 459
P0335 CRANK Crankshaft position sensor circuit malfunction 460
P0336 CRANK
—R Crankshaft position sensor circuit range/performance problem 461
P0340 CAM Camshaft position sensor circuit malfunction 462
423
2-7ON-BOARD DIAGNOSTICS II SYSTEM
11. Diagnostic Chart with Trouble Code for RHD Vehicles

DTC
No.Abbreviation
(Subaru Select Monitor)Item Page
P0341 CAM
—R Camshaft position sensor circuit range/performance problem 463
P0400 EGR Exhaust gas recirculation flow malfunction 464
P0403 EGRSOL Exhaust gas recirculation circuit low input 465
P0420 CAT Catalyst system efficiency below threshold 466
P0440 EVAP Evaporative emission control system malfunction 467
P0441 CPC
—F Evaporative emission control system incorrect purge flow 468
P0443 CPC Evaporative emission control system purge control valve circuit low input 469
P0446 VCMSOL
—LO Evaporative emission control system vent control low input 470
P0451 TNKP
—F Evaporative emission control system pressure sensor range/performance problem 473
P0452 TNKP
—LOW Evaporative emission control system pressure sensor low input 474
P0453 TNKP
—HI Evaporative emission control system pressure sensor high input 479
P0461 FLVL
—R Fuel level sensor circuit range/performance problem 484
P0462 FLVL
—LOW Fuel level sensor circuit low input 486
P0463 FLVL
—HI Fuel level sensor circuit high input 492
P0500 VSP Vehicle speed sensor malfunction 497
P0505 ISC Idle control system malfunction 498
P0506 ISC
—RLOW Idle control system RPM lower than expected 499
P0507 ISC
—RHI Idle control system RPM higher than expected 500
P0600—Serial communication link malfunction 501
P0601 RAM Internal control module memory check sum error 502
P0703 ATBRK Brake switch input malfunction 503
P0705 ATRNG Transmission range sensor circuit malfunction 504
P0710 ATF Transmission fluid temperature sensor circuit malfunction 505
P0720 ATVSP Output speed sensor (vehicle speed sensor 1) circuit malfunction 506
P0725 ATNE Engine speed input circuit malfunction 507
P0731 ATGR1 Gear 1 incorrect ratio 508
P0732 ATGR2 Gear 2 incorrect ratio 508
P0733 ATGR3 Gear 3 incorrect ratio 508
P0734 ATGR4 Gear 4 incorrect ratio 508
P0740 ATLU
—F Torque converter clutch system malfunction 510
P0743 ATLU Torque converter clutch system electrical 511
P0748 ATPL Pressure control solenoid electrical 512
P0753 ATSFT1 Shift solenoid A electrical 513
P0758 ATSFT2 Shift solenoid B electrical 514
P0760 ATOVR
—F Shift solenoid C malfunction 515
P0763 ATOVR Shift solenoid C electrical 516
P1100 ST
—SWOFF Starter switch circuit low input 517
P1101 N
—SWOFF Neutral position switch circuit high input [AT vehicles] 518
P1102 BR Pressure sources switching solenoid valve circuit low input 519
P1103 TRQ Engine torque control signal circuit malfunction 520
P1120 ST
—SWON Starter switch circuit high input 521
P1121 N
—SWON Neutral position switch circuit low input [AT vehicles] 522
424
2-7ON-BOARD DIAGNOSTICS II SYSTEM
11. Diagnostic Chart with Trouble Code for RHD Vehicles

DTC
No.Abbreviation
(Subaru Select Monitor)Item Page
P1122 BR
—HI Pressure sources switching solenoid valve circuit high input 523
P1141 QA
—RHI Mass air flow sensor circuit range/performance problem (high input) 524
P1142 TH
—RLOW Throttle position sensor circuit range/performance problem (low input) 525
P1143 PS
—RLOW Pressure sensor circuit range/performance problem (low input) 526
P1144 PS
—RHI Pressure sensor circuit range/performance problem (high input) 527
P1400 PCVSOL
—LO Fuel tank pressure control solenoid valve circuit low input 528
P1420 PCVSOL
—HI Fuel tank pressure control solenoid valve circuit high input 532
P1421 EGRSOL
—HI Exhaust gas recirculation circuit high input 535
P1422 CPC
—HI Evaporative emission control system purge control valve circuit high input 536
P1423 VCMSOL
—HI Evaporative emission control system vent control high input 537
P1440 PCV
—FLOW Fuel tank pressure control system function problem (low input) 540
P1441 PCV
—FHI Fuel tank pressure control system function problem (high input) 541
P1442 FLVL
—R2 Fuel level sensor circuit range/performance problem 2 542
P1500 FAN
—1 Radiator fan relay 1 circuit low input 544
P1502 FAN
—F Radiator fan function problem 545
P1507 ISC
—SHI Idle control system malfunction (fail-safe) 546
P1520 FAN
—1HI Radiator fan relay 1 circuit high input 547
P1540 VSP
—S Vehicle speed sensor malfunction 2 548
P1700 ATTH Throttle position sensor circuit malfunction for automatic transmission 549
P1701 ATCRS Cruise control set signal circuit malfunction for automatic transmission 550
P1702 ATDIAG
—LO Automatic transmission diagnosis input signal circuit low input 551
P1722 ATDIAG
—HI Automatic transmission diagnosis input signal circuit high input 552
P1742 ATDIAG
—2 Automatic transmission diagnosis input signal circuit malfunction 553
425
2-7ON-BOARD DIAGNOSTICS II SYSTEM
11. Diagnostic Chart with Trouble Code for RHD Vehicles