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OBD0716A
1
CHECK HARNESS.
1) Turn ignition switch to OFF.
2) Disconnect connector from ECM.
3) Measure resistance between ECM harness connector
and body.
: Connector & terminal
(B84) No. 30—Body/700 kΩ, or more
: Go to step 2.
: Go to next.
OBD0716A
: Connector & terminal
(B84) No. 30—Body/400 kΩ, or less
: Go to step 3.
: Go to step 4.
B2M0244A
2
CHECK KNOCK SENSOR.
1) Disconnect connector from knock sensor.
2) Measure voltage between knock sensor connector and
body.
: Connector & terminal
(E14) No. 1—Body/700 kΩ, or more
: Check and repair the following items.
Open circuit of the harness between knock sen-
sor connector and ECM connector
Poor contact of the knock sensor connector
Poor contact of coupling connector (B21)
: Go to next.
: Check for secure tightening of the knock
sensor installation bolts.
: Tighten knock sensor installation bolts securely.
: Replace knock sensor.
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OBD0717A
3
CHECK KNOCK SENSOR.
1) Disconnect connector from knock sensor.
2) Measure resistance of harness between knock sensor
connector and body.
: Connector & terminal
(E14) No. 1—Body/400 kΩ, or less
: Replace knock sensor.
: Repair short circuit of harness between knock
sensor connector and ECM connector.
NOTE:
The harness between both connectors is shielded. Repair
short circuit of harness together with shield.
B2M0625A
4
CHECK INPUT SIGNAL FOR ECM.
1) Connect connectors to ECM and knock sensor.
2) Turn ignition switch to ON.
3) Measure voltage between ECM and body.
: Connector & terminal
(B84) No. 30—Body/2 V, or more
: Repair poor contact in ECM connector.
: Even if MIL lights up, the circuit has returned to a
normal condition at this time. (However, the pos-
sibility of poor contact still remains.)
Check and repair the following connectors.
Knock sensor connector
ECM connector
Coupling connector (B21)
220
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OBD0292
Z: DTC P0335
—CRANKSHAFT POSITION SENSOR
CIRCUIT MALFUNCTION (CRANK)—
OBD0293A
DESCRIPTION:
The crankshaft position sensor is installed on the oil
pump, located in the front center portion of the cylinder
block, to detect the crankshaft position. It is designed so
that the ECM accurately reads the number of pulses which
occur when protrusions provided at the perimeter of the
crankshaft sprocket (rotating together with the crankshaft)
cross the crankshaft position sensor.
The crankshaft position sensor is a molded type which
consists of a magnet, core, coil, terminals, etc.
1Terminal
2Yoke core
3Magnet
4Coil
5Core
6Cover
OBD0294A
The crankshaft sprocket is provided with six protrusions.
Crankshaft rotation causes these protrusions to cross the
crankshaft position sensor so that magnetic fluxes in the
coil change with the change in air gap between the sensor
pick-up and the sprocket. The change in air gap induces an
electromotive force which is transmitted to the ECM.
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DTC DETECTING CONDITION:
Immediately at fault recognition
TROUBLE SYMPTOM:
Engine stalls.
Failure of engine to start
1.Check harness.
2.Check crankshaft position sensor.
CAUTION:
After repair or replacement of faulty parts, conduct
CLEAR MEMORY and INSPECTION MODES.
WIRING DIAGRAM:
OBD0295
222
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OBD0718A
1
CHECK HARNESS.
1) Turn ignition switch to OFF.
2) Disconnect connector from crankshaft position sensor.
3) Measure resistance of harness between crankshaft
position sensor connector and body.
: Connector & terminal
(E10) No. 1—Body/100 kΩ, or more
: Check and repair the following items.
Open circuit of harness between crankshaft
position sensor connector and ECM connector
Poor contact in ECM connector
Poor contact in the coupling connector (B20)
: Go to next.
OBD0718A
: Connector & terminal
(E10) No. 1—Body/10Ω, or less
: Repair short circuit of harness between crank-
shaft position sensor connector and ECM connec-
tor.
NOTE:
The harness between both connectors is shielded. Repair
short circuit of harness together with shield.
: Go to next.
OBD0719A
: Connector & terminal
(E10) No. 2—Body/10Ω, or less
: Check and repair the following items.
Open circuit of harness between crankshaft
position sensor connector and ECM connector
Poor contact in ECM connector
Poor contact in the coupling connector (B20)
: Go to step 2.
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2
CHECK CRANKSHAFT POSITION SENSOR.
: Check for secure tightening of the installa-
tion bolts of the crankshaft position sensor.
: Tighten securely.
: Go to the next step.
G2M0639
1) Remove crankshaft position sensor.
2) Measure resistance between connector terminals of
crankshaft position sensor.
: Terminals
No. 1—No. 2/1—4kΩ
: Repair poor contact in crankshaft position sensor
connector.
: Replace crankshaft position sensor.
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OBD0304
AA: DTC P0340
—CAMSHAFT POSITION SENSOR CIRCUIT
MALFUNCTION (CAM)—
OBD0305A
DESCRIPTION:
The camshaft position sensor is located on the left-hand
camshaft support to detect the combustion cylinder at any
one moment.
It is designed so that the ECM accurately reads the
number of pulses which occur when protrusions provided
on the back of the LH camshaft-drive sprocket cross the
sensor.
Internal construction and the basic operating principle of
the camshaft position sensor are similar to those of the
crankshaft position sensor. A total of seven protrusions
(one each at two locations, two at one location and three
at one location) are arranged in four equal parts of the
sprocket.
DTC DETECTING CONDITION:
Immediately at fault recognition
TROUBLE SYMPTOM:
Engine stalls.
Failure of engine to start
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1.Check harness.
2.Check camshaft position sensor.
CAUTION:
After repair or replacement of faulty parts, conduct
CLEAR MEMORY and INSPECTION MODES.
WIRING DIAGRAM:
OBD0115
226
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