Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Subaru Legacy 1995-1999 Approved Subaru Legacy 1996 1996 Service Manual 1996 LEGACY RHD (RIGHT HAND DRIVE) SERVICE MANUAL SUPPLEMENT Troubleshooting Section MSA5T9603A29719
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2-T [T11A0] ON-BOARD DIAGNOSTICS 11 SYSTEM
11 . Diagnostics Chart with Trouble Code
11 . Diagnostics Chart with Trouble Code
A: DIAGNOSTIC TROUBLE CODE (DTC) LIST
DTC Abbreviation
Item Page
No . (Subaru select monitor)
P0100 QA Mass air flow sensor circuit malfunction 76
P0101 QA - R Mass air flow sensor circuit range/performance problem 77
P0105 P-S Pressure sensor circuit malfunction 78
P0106 PS - R Pressure sensor circuit range/performance problem 79
P0115 TW Engine coolant temperature sensor circuit malfunction 80
P0120 THV Throttle position sensor circuit malfunction 81
P0121 TH - R Throttle position sensor circuit range/performance problem 82
P0125 TW - CL Insufficient coolant temperature for closed loop fuel control 83
P0130 F02 - V Front oxygen sensor circuit malfunction 84
P0133 F02 - R Front oxygen sensor circuit slow response 85
P0135 F02H Front oxygen sensor heater circuit malfunction 86
P0136 R02 - V Rear oxygen sensor circuit malfunction 87
P0139 R02 - R Rear oxygen sensor circuit slow response 88
P0141 R02H Rear oxygen sensor heater circuit malfunction 89
P0170 FUEL Fuel trim malfunction 90
P0201 INJ1 Fuel injector circuit malfunction - #1
P0202 INJ2 Fuel injector circuit malfunction - #2
91
P0203 INJ3 Fuel injector circuit malfunction - #3
P0204 INJ4 Fuel injector circuit malfunction - #4
P0301 MIS - 1 Cylinder 1 misfire detected
P0302 MIS - 2 Cylinder 2 misfire detected
92
P0303 MIS - 3 Cylinder 3 misfire detected
P0304 MIS - 4 Cylinder 4 misfire detected
P0325 KNOCK Knock sensor circuit malfunction 93
P0335 CRANK Crankshaft position sensor circuit malfunction 94
P0340 CAM Camshaft position sensor circuit malfunction 95
P0400 EGR Exhaust gas recirculation flow malfunction 96
P0403 EGRSOL Exhaust gas recirculation circuit malfunction 97
P0420 CAT Catalyst system efficiency below threshold 98
P0441 CPC - F Evaporative emission control system incorrect purge flow 99
P0443 CPC Evaporative emission control system purge control valve circuit malfunction 100
P0500 VSP Vehicle speed sensor malfunction 101
P0505 ISC Idle control system malfunction 102
P0506 ISC - L Idle control system RPM lower than expected 103
P0507 ISC - H Idle control system RPM higher than expected 104
P0600 - Serial communication link malfunction 105
P0601 RAM Internal control module memory check sum error 106
P0703 ATBRK Brake switch input malfunction T 107 I
74
ON-BOARD DIAGNOSTICS 11 SYSTEM [T11aoj 2-7
11 . Diagnostics Chart with Trouble Code
DTC Abbreviation
Item Page
No . (Subaru select monitor)
P0705 ATRNG Transmission range sensor circuit malfunction 108
P0710 ATF Transmission fluid temperature sensor circuit malfunction 109
P0720 ATVSP Output speed sensor (vehicle speed sensor 1) circuit malfunction 110
P0725 ATNE Engine speed input circuit malfunction 111
P0731 ATGR1 Gear 1 incorrect ratio
P0732 ATGR2 Gear 2 incorrect ratio
112
P0733 ATGR3 Gear 3 incorrect ratio
P0734 ATGR4 Gear 4 incorrect ratio
P0740 ATLU - F Torque converter clutch system malfunction 114
P0743 ATLU Torque converter clutch system (duty solenoid B) electrical 115
P0748 ATPL Pressure control solenoid (duty solenoid A) electrical 116
P0753 ATSFTi Shift solenoid A (shift solenoid 1) electrical 117
P0758 ATSFT2 Shift solenoid B (shift solenoid 2) electrical 118
P0760 ATOVR - F Shift solenoid C (shift solenoid 3) malfunction 119
P0763 ATOVR Shift solenoid C (shift solenoid 3) electrical 120
P1100 ST - SW Starter switch circuit malfunction 121
P1101 N/P - SW Neutral position switch circuit malfunction 122
P1102 BR Pressure sources switching solenoid valve circuit malfunction 123
P1103 TRQ Engine torque control signal circuit malfunction 124
P1500 FAN - 1 Radiator fan relay 1 circuit malfunction 125
P1502 FAN - F Radiator fan function problem 126
P1700 ATTH Throttle position sensor circuit malfunction 127
P1701 ATCRS Cruise control set signal circuit malfunction 128
P1702 ATDIAG Automatic transmission diagnosis input signal circuit malfunction I 129
75
2-7 [T11B0] ON-BOARD DIAGNOSTICS II SYSTEM
11 . Diagnostics Chart with Trouble Code
B : DTC P0100
- MASS AIR FLOW SENSOR CIRCUIT
MALFUNCTION (QA) -
WIRING DIAGRAM:
Main relay
0
0
847
------ - - - - - - -- -- -- - - - - - - --
-------- ------------------11
17 SBF-2
ECM
,~a0 0 E (a
4
O Mass air
flow
sensor
12u34 u 56 u 78 u 1 234
171 192021 232 2526211 2 6 8
4 4 50 515 53 55 5 9101112
7172 1 75 76 77 78 80 81 1 1314 1516 M56 1 2345
B2M0785
NOTE :
For the diagnostic procedure on mass air flow sensor cir-
cuit malfunction (DTC P0100), refer to 2-7 [T10B0]*2 .
76
ON-BOARD DIAGNOSTICS II SYSTEM [T1ico] 2-7
11 . Diagnostics Chart with Trouble Code
C: DTC P0101
- MASS AIR FLOW SENSOR CIRCUIT
RANGE/PERFORMANCE PROBLEM
(QA - R) -
WIRING DIAGRAM :
Main relay
0
0
B47
--------------------------11
'7 SBF-2
ECM
00
Ei B12
O Mass air
flow
sensor
0
1 2u 4 u 56 u 78u 1234
171 19 20 Zt 23 15 26 271 34 6 8
46 4 1 51152153M 5 9101112
7112 74 7 76 7718 81 2 83 13141 16 M56 1 2 3 45
82M0785
NOTE :
For the diagnostic procedure on mass air flow sensor cir-
cuit range/performance problem (DTC P0101), refer to 2-7
[T10C0]*2.
77
2-7 [TI 1D0] ON-BOARD DIAGNOSTICS II SYSTEM
11 . Diagnostics Chart with Trouble Code
D: DTC P0105
- PRESSURE SENSOR CIRCUIT
MALFUNCTION (P - S) -
WIRING DIAGRAM :
Main rely
0
0
Pressure sources
Pressure switching solenoid
sensor valve
-it r
O CL~J Bt H 8~7
SBF-2
0 o a,
i2u3a u 56u 78u-- ~o t1 lt
1 1819 011 22 2 16 8 30 u 4 ~7 u u 3
4 4
76 77 1 1 5 123 ~ 5 6
e2nno7as I
NOTE :
For the diagnostic procedure on pressure sensor circuit
malfunction (DTC P0105), refer to 2-7 [T10D0]*2.
78
ON-BOARD DIAGNOSTICS 11 SYSTEM [T11EO] 2-7
11 . Diagnostics Chart with Trouble Code
E: DTC P0106
- PRESSURE SENSOR CIRCUIT
RANGE/PERFORMANCE PROBLEM (PS - R) -
WIRING DIAGRAM:
O Q e, 9
3 0 11 1 1
2 2 1
14 1 ~ 1 3 ~ M
,5 6
r-- u
B2M0786
NOTE:
For the diagnostic procedure on pressure sensor circuit
range/performance problem (DTC P0106), refer to 2-7
[T10E0]*2.
79
2-7 [T11F0] ON-BOARD DIAGNOSTICS II SYSTEM
11 . Diagnostics Chart with Trouble Code
F: DTC P0115
- ENGINE COOLANT TEMPERATURE
SENSOR CIRCUIT MALFUNCTION (TW) -
WIRING DIAGRAM :
Engine coolant
temperature sensor
B84
B21 E2 E8
ECM 2-Q FE
884 B21 E8
1 2u34 u 56 u 78 u
171819 20 2122 23 24 25 26 27 28 29 30 1234
45 46 47 48 49 50 5152 53 54 55 56 57 5678 12
71127314757671787980818283 9 1 101 11112 ~
4_Lr
82M0539
NOTE :
For the diagnostic procedure on engine coolant temper-
ature sensor circuit malfunction (DTC P0115), refer to 2-7
[T10F0]*2.
80
ON-BOARD DIAGNOSTICS II SYSTEM [T11GOj 2-7
11 . Diagnostics Chart with Trouble Code
G: DTC P0120
- THROTTLE POSITION SENSOR CIRCUIT
MALFUNCTION (THV) -
WIRING DIAGRAM :
B84
B21 E2 E13
Throttle
ECM -21 position
sensor
B84 821 E13
12u34 u 56 u 78 u
171819 20 2122 23 24 25 26 27 28 29 30 1234
451461 47148149150 5152 53 54 55 57 5678
7172 73 7415 76 77 78 79 80 8182 83 9 1101 111 12 1 2 3
82M0540
NOTE :
For the diagnostic procedure on throttle position sensor
circuit malfunction (DTC P0120), refer to 2-7 [T10G0]*2.
81
2-7 [T11H0] ON-BOARD DIAGNOSTICS II SYSTEM
11 . Diagnostics Chart with Trouble Code
H : DTC P0121
- THROTTLE POSITION SENSOR CIRCUIT
RANGE/PERFORMANCE PROBLEM
(TN - R) -
WIRING DIAGRAM:
B84
B21 E2
Throttle
ECM 2-1 4 position
6 2 sensor
io
B84 821 E13
12u34 u 56 u 78 u
171819 20 2122 23 24 25 26 27 28 29 30 1234
45 46 47 48 49 50 5152 53 54 55 56 57 5678
7172 7314 7516 77 78 79 80 8182 83 9 1 101 111 12 r 1 2 3
BMW
NOTE :
For the diagnostic procedure on throttle position sensor
circuit range/performance problem (DTC P0121), refer to
2-7 [T10H0]*2.
82
ON-BOARD DIAGNOSTICS II SYSTEM (T11,01 2-7
11 . Diagnostics Chart with Trouble Code
I: DTC P0125
- INSUFFICIENT COOLANT TEMPERATURE
FOR CLOSED LOOP FUEL CONTROL
(TW - CL) -
WIRING DIAGRAM:
Engine coolant
temperature sensor
B84
B21 E2 E8
ECM
B84 B21 ES
1 2u34 U -1 5[6 f U F u 5~5
78
5
17 18 19 20 2122 23 24125 1 26 27 28 2930 1234
45146147148149150 5152 53 54 55 5657 5678 12
7172 73 74 75 76 77 78 79 80 8182 83 9 10 1112
B2M0539
NOTE :
For the diagnostic procedure on insufficient coolant tem-
perature for closed loop fuel control (DTC P0125), refer to
2-7 [T1010]*2 .
83
2-7 [T11J0] ON-BOARD DIAGNOSTICS II SYSTEM
11 . Diagnostics Chart with Trouble Code
J : DTC P0130
- FRONT OXYGEN SENSOR CIRCUIT
MALFUNCTION (F02 - V) -
WIRING DIAGRAM :
Main relay
0
0
847
SBF-2
Front oxygen sensor -_
E93::--i
O O B!1 818
u u u u u 191101 u 1111121 u u
37 431441
~ 1 63 64 66 7 6 0 I
T 7 6 8 2 INM016116=190 1 234 Pffl It
B2M0787
NOTE :
For the diagnostic procedure on front oxygen sensor cir-
cuit malfunction (DTC P0130), refer to 2-7 [T10J0]*2,
84
ON-BOARD DIAGNOSTICS II SYSTEM [T11 KOl 2-7
11 . Diagnostics Chart with Trouble Code
K : DTC P0133
- FRONT OXYGEN SENSOR CIRCUIT SLOW
RESPONSE (F02 - R) -
WIRING DIAGRAM :
0
O O B!7 B18
1 u u u u u o u t1t u 13fuu15i6
35 3 41 IT10121
P60 66 7 68 "143
6 0 173-T-4-1 D
77 5p 2 1 2 34
B2M0787
NOTE :
For the diagnostic procedure on front oxygen sensor cir-
cuit slow response (DTC P0133), refer to 2-7 [T10K0)*2.
85
2-7 [T11L0] ON-BOARD DIAGNOSTICS II SYSTEM
11 . Diagnostics Chart with Trouble Code
L: DTC P0135
- FRONT OXYGEN SENSOR HEATER CIRCUIT
MALFUNCTION (F02H) -
WIRING DIAGRAM :
Main relay
0
0
-i ~ r
847
SBF-2
O 818 Front oxygen sensor E 8
--------- - - - -- - - -- - - - - -
ECM
OOE
O e+~ s,a
u U 15161 u 17181 u u 19 1101 u I u 131pu X 234
1 1819 21 342 2 23 44 g 8
L57 1 jjj%1 66 67 6 16 1011,
7 1213 1 /41751751771181901610210631 1 23 4 M56 D
B2M0788
NOTE :
For the diagnostic procedure on front oxygen sensor
heater circuit malfunction (DTC P0135), refer to 2-7
[T10L0)*2.
86
ON-BOARD DIAGNOSTICS 11 SYSTEM Riinnoll 2-7
11 . Diagnostics Chart with Trouble Code
M: DTC P0136
- REAR OXYGEN SENSOR CIRCUIT
MALFUNCTION (R02 - V) -
WIRING DIAGRAM:
n
SBF-2
O I ( Rear oxygen sensor
(Rear ~E
f 819 T5 T6 t Cal model) =
I ~ ~ _.r,.ra~
ECM
sensor
819 (Cal .model only)
Rear 0
O 847 819
T6
1 u34 u 56 u 78 u u 910 u 111 121- V 1314u1516
IS
1 8119120 121 23 7 7 3 4 1 4243 44
8 0 1 234 P9
B2M0789
NOTE :
For the diagnostic procedure on rear oxygen sensor cir-
cuit malfunction (DTC P0136), refer to 2-7 [T10M0]*2.
87
2-7 [TI 1N0] ON-BOARD DIAGNOSTICS 11 SYSTEM
11 . Diagnostics Chart with Trouble Code
N: DTC P0139
- REAR OXYGEN SENSOR CIRCUIT SLOW
RESPONSE (R02 - R) -
WIRING DIAGRAM:
Main re
0
B47
SBF-2
Rear oxygen sensor
O B~9 O T6 8
(Except Cal model)
-- - -- -- - -- ---- --
ECM ~ ---
Rear oxygen sensor
819 (Ca l .model only)
40 O 8~7 B19
T6
1zu u 111 > > 1
1 2D 212 23 17 2 7 3 41 2 1 2
425141 lablR
7 81 7 ~ 90 ~ 234 3 6 43
u
B2M0789
NOTE :
For the diagnostic procedure on rear oxygen sensor cir-
cuit slow response (DTC P0139), refer to 2-7 [T10N0]*2.
88
ON-BOARD DIAGNOSTICS II SYSTEM [Ti1ooi 2-7
11 . Diagnostics Chart with Trouble Code
O: DTC P0141
- REAR OXYGEN SENSOR HEATER CIRCUIT
MALFUNCTION (R02H) -
WIRING DIAGRAM:
Main rel
0
<-O O
o
B47
SBF-2
Rear oxygen sensor
819 O T6
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