Page 2513 of 4770

A00434
± DIAGNOSTICSENGINE (5S±FE)
DI±93
328 Author: Date:
2 Check spark plug and spark of misfiring cylinder.
PREPARATION:
(a) Disconnect the high±tension cord from the spark plug.
(b) Remove the spark plug.
CHECK:
(a) Check the plug type.
(b) Check the electrode for carbon deposits.
(c) Check the electrode gap.
OK:
(a) Platinum±tipped spark plugs with twin ground
electrodes.
Recommended spark plug:
ND made: PK20TR11
NGK made: BKR6EKPB±11
(b) No large carbon deposit present.
Not wet with gasoline or oil.
(c) Electrode gap: 1.1 mm (0.043 in.)
PREPARATION:
(a) Install the spark plug to the high±tension code.
(b) Disconnect the injector connector.
(c) Ground the spark plug.
CHECK:
Check if spark occurs while the engine is being cracked.
NOTICE: To prevent excess fuel being injected from the in-
jectors during this test, don't crank the engine for more
than 5 ~ 10 seconds at a time.
OK:
Spark jumps across electrode gap.
NG Replace or check ignition system
(See page IG±1).
OK
Page 2514 of 4770
A03015A03416
#10 (+) #20 (+) ON
#30 (+)
#40 (+) w/o Immobiliser
w/ Immobiliser
#10 (+)
#20 (+)#30 (+)
#40 (+)
FI6588
FI6538
A00064
Injector Signal Waveform
10 V/
Division
GND
100 msec./Division (Idling)GND
Injection duration1 msec./Division (Idling) 10 V/
Division(Magnification)
DI±94
± DIAGNOSTICSENGINE (5S±FE)
329 Author: Date:
3 Check voltage of ECM terminal for injector of failed cylinder.
PREPARATION:
(a) Remove the glove compartment (See page SF±64).
(b) Turn the ignition switch ON.
CHECK:
Measure voltage between applicable terminal of the ECM con-
nector and body ground.
OK:
Voltage: 9 ~ 14 V
Reference: INSPECTION USING OSCILLOSCOPE
INJECTOR SIGNAL WAVEFORM
With the engine idling, measure between terminals #10 ~ #40 and E01 of the ECM connector.
HINT:
The correct waveforms are shown.
OK Go to step 4.
NG
Page 2515 of 4770
± DIAGNOSTICSENGINE (5S±FE)
DI±95
330 Author: Date:
4 Check resistance of injector of misfiring cylinder (See page SF±20).
NG Replace injector.
OK
Check for open and short in harness and
connector between injector and ECM
(See page IN±31).
5 Check fuel pressure (See page SF±6).
NG Check and repair fuel pump, pressure regula-
tor, fuel pipe line and filter.
OK
6 Check injector injection (See page SF±23).
NG Replace injector.
OK
7 Check EGR system (See page EC±12).
NG Repair EGR system.
OK
Page 2516 of 4770
DI±96
± DIAGNOSTICSENGINE (5S±FE)
331 Author: Date:
8 Check manifold absolute pressure sensor and engine coolant temp. sensor
(See pages SF±53 AND SF±49).
NG Repair or replace.
OK
Check compression pressure, valve
clearance and valve timing
(See pages EM±3, EM±4 AND EM±23).
Page 2517 of 4770

A03598
Knock Sensor 1ECM
KNK
E1 E8 13
W 1
*1: w/o Immobiliser
*2: w/ Immobiliser
(*1) (*2)
E812
± DIAGNOSTICSENGINE (5S±FE)
DI±97
332 Author: Date:
DTC P0325 Knock Sensor 1 Circuit Malfunction
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 ConditionTrouble Area
P0325
No knock sensor 1 signal to ECM with engine speed, 1,200
rpm or more
(2 trip detection logic)Open or short in knock sensor 1 circuit
Knock sensor 1 (looseness)
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.
WIRING DIAGRAM
INSPECTION PROCEDURE
HINT:
Read freeze frame data using TOYOTA hand±held tester or OBD II scan tool. Because freeze frame records
the engine conditions when the malfunction is detected, when troubleshooting it is useful for determining
whether the vehicle was running or stopped, the engine warmed up or not, the air±fuel ratio lean or rich, etc.
at the time of the malfunction.
DI012±10
Page 2518 of 4770
A03016A03417
LOCK
KNK E8 Connector
w/o Immobiliser
w/ Immobiliser
KNK
E8 Connector
DI±98
± DIAGNOSTICSENGINE (5S±FE)
333 Author: Date:
1 Check continuity between terminal KNK of ECM connector and body ground.
PREPARATION:
(a) Remove the glove compartment (See page SF±64).
(b) Disconnect the E8 connector from the ECM.
CHECK:
Measure resistance between terminal KNK of the ECM connec-
tor and body ground.
OK:
Resistance: 1 MW or higher
OK Go to step 3.
NG
2 Check knock sensor 1 (See page SF±57).
NG Replace knock sensor 1.
OK
3 Check for open and short in harness and connector between ECM and knock
sensor 1 (See page IN±31).
NG Repair or replace harness or connector.
OK
Page 2519 of 4770
A00406
KNK Signal Waveform
0.5 V/
Division
0V
0V5 msec./Division
100
sec./Division 0.5 V/
Division
± DIAGNOSTICSENGINE (5S±FE)
DI±99
334 Author: Date:
4 Does malfunction disappear when good knock sensor 1 is installed?
YES Replace knock sensor 1.
NO
Check and replace ECM (See page IN±31).
Reference: INSPECTION USING OSCILLOSCOPE
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.
Spread the time on the horizontal axis, and confirm that period
of the wave is 132 msec.
(Normal mode vibration frequency of knock sensor:
7.6 kHz)
HINT:
If normal mode vibration frequency is not 7.6 kHz the sensor is
malfunctioning.
Page 2520 of 4770

A03599
ECM
G+
NE+
NE±
E1 E9
E9
E95
4
17 B±W
L
B±R
L BR Camshaft Position Sensor
Crankshaft Position Sensor1
2
1
2
*1: w/o Immobiliser
*2: w/ Immobiliser(*1) (*2)
E10
E10
E1012 11
6
(*1) (*2)(*1) (*2)
B±R DI±100
± DIAGNOSTICSENGINE (5S±FE)
335 Author: Date:
DTC P0335 Crankshaft Position Sensor ºAº Circuit
Malfunction
CIRCUIT DESCRIPTION
Crankshaft position sensor (NE signal) consist of a signal plate and pickup coil.
The NE signal plate has 34 teeth and is mounted on the crankshaft. The NE signal sensor generates 34
signals of every engine revolution. The ECM detects the standard crankshaft angle based on the G signals,
and the actual crankshaft angle the engine speed by the NE signals.
DTC No.DTC Detecting ConditionTrouble Area
No crankshaft position sensor signal to ECM during cranking
(2 trip detection logic)Open or short in crankshaft position sensor circuit.
C k h ft itiP0335No crankshaft position sensor signal to ECM with engine
speed 600 rpm or more
(2 trip detection logic)Crankshaft position sensor
Starter
ECM
WIRING DIAGRAM
DI013±10