Removal; Installation - Mazda CX-7 2007 Workshop Manual

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CRANKSHAFT POSITION (CKP) SENSOR REMOVAL/INSTALLATION[L3 WITH TC]
WM: CRANKSHAFT POSITION PLATE

Removal

1. Disconnect the negative battery cable.
2. Remove the charge air cooler duct. (See01-13-5 INTAKE AIR SYSTEM REMOVAL/INSTALLATION[L3 WITH
TC].)
3. Remove the under cover.
4. Remove the splash shield (RH).
5. Disconnect the CKP sensor connector.
6. Remove the installation bolts to remove the CKP sensor.

Installation

Caution
• When foreign material, such as an iron chips, gets on the CKP sensor, it can cause abnormal
output from the sensor because of flux turbulence and adversely affect engine control. Be sure
there is no foreign material on the CKP sensor when replacing.
1. Perform the following procedure so that piston No.1 is at the top dead center.
(1) Rotate the crankshaft in the direction of the
engine rotation and remove the cylinder block
lower blind plug when the No. 1 cylinder is at
the point prior to top dead center (TDC) of
compression, then install the SST.
(2) Rotate the crankshaft in the direction of the
engine rotation so that the No.1 piston is at
TDC of the compression stroke. (Until the
crank weight contacts SST and stops.)
2. Using a straight edge, draw a straight line directly
in the center of the twentieth tooth of the
crankshaft pulley pulse wheel (counting
counterclockwise from the empty space).
Caution
• If the line is not accurately drawn,
ignition timing, fuel injection and other
engine control systems will be adversely
effected. Draw the straight line carefully
using a straight edge.
3. Align the center line of the crankshaft position
sensor and the line drawn in Step 2, then install
the sensor.
4. Install the CKP sensor fitting bolts.
Tightening torque
5.5— 7.5 N·m {57— 76 kgf·cm, 49— 66 in·lbf}
5. Remove the SST then install the cylinder block lower blind plug.
Tightening torque
18— 22 N·m {1.9— 2.2 kgf·m, 14— 16 ft·lbf}
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01-40–42
CONTROL SYSTEM [L3 WITH TC]
303-507
EMPTY SPACE
MARK LINE AT CENTER
OF 20TH TOOTH
CENTER LINE
OF SENSOR
CKP SENSOR
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