A00406
KNK signal waveform
0.5V/
Division
0V
0V
5 m sec./Division
100 sec./Division
0.5V/
Division
DI
−
174
−
DIAGNOSTICS
ENGINE (1ZZ
−
FE)
2005 CELICA (RM1131U)
DTC
P0325
Knock Sensor 1 Circuit (Bank 1 or Single
Sensor)
CIRCUIT DESCRIPTION
The knock sensor is fitted to the cylinder block to detect engine knocking. This sensor contains a piezoelec-
tric element which generates a voltage when it becomes deformed, which occurs when the cylinder block
vibrates due to knocking. If engine knocking occurs, ignition timing is retarded to suppress it.
DTC No.
DTC Detecting Condition
Trouble Area
P0325
No knock sensor 1 signal to ECM with engine speed, 2,000
rpm or more
S
Open or short in knock sensor 1 circuit
S
Knock sensor 1 (looseness)
S
ECM
HINT:
If the ECM detects above diagnosis conditions, it operates the fail safe function in which the corrective retard
angle value is set to the maximum value.
Reference: INSPECTION USING OSCILLOSCOPE
S
With the engine racing (4,000 rpm), measure between
terminal KNK of the ECM connector and body ground.
HINT:
The correct waveforms are as shown.
S
Spread the time on the horizontal axis, and confirm that
period of the wave is 80
μ
sec.
(Normal mode vibration frequency of knock sensor:
12.5 kHz
HINT:
If normal mode vibration frequency is not 7.6 kHz the sensor is
malfunctioning.
DI38A
−
15
372
Содержание Celica 2005
Страница 72: ...PP0K9 10 PREPARATION IGNITION PP 21 2005 CELICA RM1131U EQUIPMENT Spark plug cleaner 71 ...
Страница 115: ...PP3Y3 02 PP 64 PREPARATION BRAKE 2005 CELICA RM1131U RECOMMENDED TOOLS 09082 00040 TOYOTA Electrical Tester 114 ...
Страница 134: ...PP0MW 04 PREPARATION BODY PP 83 2005 CELICA RM1131U LUBRICANT Item Capacity Classification MP grease 133 ...
Страница 219: ...A21571 DI 20 DIAGNOSTICS ENGINE 1ZZ FE 2005 CELICA RM1131U 218 ...
Страница 260: ... DIAGNOSTICS ENGINE 1ZZ FE DI 61 2005 CELICA RM1131U MEMO 259 ...
Страница 261: ...DI 62 DIAGNOSTICS ENGINE 1ZZ FE 2005 CELICA RM1131U MEMO 260 ...
Страница 400: ... DIAGNOSTICS ENGINE 1ZZ FE DI 201 2005 CELICA RM1131U MEMO 399 ...
Страница 512: ...A21571 DIAGNOSTICS ENGINE 2ZZ GE DI 313 2005 CELICA RM1131U 511 ...
Страница 699: ...DI 500 DIAGNOSTICS ENGINE 2ZZ GE 2005 CELICA RM1131U MEMO 698 ...
Страница 879: ...A21571 DI 680 DIAGNOSTICS AUTOMATIC TRANSAXLE U240E 2005 CELICA RM1131U 878 ...
Страница 880: ...A21572 A22718 A22768 DIAGNOSTICS AUTOMATIC TRANSAXLE U240E DI 681 2005 CELICA RM1131U 879 ...
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Страница 882: ...A21575 DIAGNOSTICS AUTOMATIC TRANSAXLE U240E DI 683 2005 CELICA RM1131U 881 ...
Страница 970: ...A21571 DIAGNOSTICS AUTOMATIC TRANSAXLE U341E DI 769 2005 CELICA RM1131U 969 ...
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Страница 973: ...A21575 DI 772 DIAGNOSTICS AUTOMATIC TRANSAXLE U341E 2005 CELICA RM1131U 972 ...
Страница 1599: ...SF0OF 13 B07709 ECM Cover ECM SF 78 SFI ENGINE CONTROL MODULE ECM 2005 CELICA RM1131U ENGINE CONTROL MODULE ECM COMPONENTS 1598 ...
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Страница 2220: ...I11735 Connector A Connector B BODY ELECTRICAL COMBINATION METER BE 45 2005 CELICA RM1131U 2219 ...
Страница 2299: ...BE1DE 09 I25302 Antenna Assembly Audio Assembly BE 124 BODY ELECTRICAL ANTENNA 2005 CELICA RM1131U ANTENNA LOCATION 2298 ...
Страница 2308: ...V00012 Shape Example Removal Installation Removal Installation Removal Installation BO 2 BODY CLIP 2005 CELICA RM1131U 2307 ...
Страница 2314: ...BO2ND 07 BO 8 BODY HEADLIGHT 2005 CELICA RM1131U INSTALLATION Installation is in the reverse order of removal See page BO 6 2313 ...
Страница 2348: ...BO2NO 02 H12580 Roof Side Moulding BO 42 BODY ROOF SIDE MOULDING 2005 CELICA RM1131U ROOF SIDE MOULDING COMPONENTS 2347 ...
Страница 2352: ...BO1E6 06 H12582 Side Mud Guard 9 Clips BO 46 BODY SIDE MUD GUARD 2005 CELICA RM1131U SIDE MUD GUARD COMPONENTS 2351 ...
Страница 2483: ...I14013 Fan Motor Fan Shroud Fan Nut AIR CONDITIONING CONDENSER FAN AC 59 2005 CELICA RM1131U 2482 ...