EN(H4SO)(diag)-197
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
ENGINE (DIAGNOSTICS)
Step
Check
Yes
No
1
CHECK HARNESS BETWEEN ECM AND
CAMSHAFT POSITION SENSOR.
1) Turn the ignition switch to OFF.
2) Disconnect the connectors from ECM and
camshaft position sensor.
3) Measure the resistance of harness between
ECM and camshaft position sensor connector.
Connector & terminal
(B134) No. 12 — (E15) No. 1:
(B134) No. 22 — (E15) No. 2:
Is the resistance less than 1
:
? Go to step
2
.
Repair the harness
and connector.
NOTE:
In this case, repair
the following item:
• Open circuit in
harness between
ECM and camshaft
position sensor
connector
• Poor contact of
ECM connector
• Poor contact of
coupling connector
2
CHECK HARNESS BETWEEN ECM AND
CAMSHAFT POSITION SENSOR.
Measure the resistance between camshaft
position sensor connector and engine ground.
Connector & terminal
(E15) No. 1 — Engine ground:
Is the resistance 1 M
:
or
more?
Go to step
3
.
Repair the short
circuit to ground in
harness between
ECM and camshaft
position sensor.
NOTE:
The harness be-
tween both con-
nectors are
shielded. Remove
the shield and re-
pair the ground
short circuit of the
harness circuit.
3
CHECK INSTALLATION CONDITION OF
CAMSHAFT POSITION SENSOR.
Is the camshaft position sensor
installation bolt tightened
securely?
Go to step
4
.
Tighten the cam-
shaft position sen-
sor installation bolt
securely.
4
CHECK CAMSHAFT POSITION SENSOR.
1) Remove the camshaft position sensor.
2) Measure the resistance between terminals
of camshaft position sensor.
Terminals
No. 1 — No. 2:
Is the resistance between 1 and
4 k
:
?
Go to step
5
.
Replace the cam-
shaft position sen-
sor. <Ref. to
FU(H4SO)-28,
Camshaft Position
Sensor.>
5
CHECK CAM SPROCKET.
Remove the timing belt cover. <Ref. to
ME(H4SO)-48, Timing Belt Cover.>
Are cam sprocket teeth cracked
or damaged?
Replace the cam
sprocket. <Ref. to
ME(H4SO)-54,
Cam Sprocket.>
Go to step
6
.
6
CHECK INSTALLATION CONDITION OF
TIMING BELT.
Turn the crankshaft using the ST, and align the
alignment mark on the cam sprocket with the
alignment mark on the timing belt cover LH.
ST 499987500
CRANKSHAFT
SOCKET
Is the timing belt dislocated
from its proper position?
Repair the installa-
tion condition of
timing belt. <Ref. to
ME(H4SO)-49,
Timing Belt.>
Replace the cam-
shaft position sen-
sor. <Ref. to
FU(H4SO)-28,
Camshaft Position
Sensor.>
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