connector.
z
Turn the ignition switch to the ON
position [(Engine off).
z
Measure the voltage between:
{
CKP sensor terminal A on
the wiring harness side and
battery negative
{
CKP sensor terminal B on
the wiring harness side and
battery negative
z
Are the voltages between 1-3 V?
No
Go to Step 8.
7
INSPECT CKP SENSOR
RESISTANCE
z
Turn the ignition switch off.
z
Measure the resistance between
CKP sensor terminal A and B on
the component side.
z
Is the resistance between 0.25-1
kilohms?
Yes
Go to the next step.
No
Replace the CKP sensor. Then go to Step
13.
8
INSPECT CKP WIRING HARNESS
SHIELD CIRCUIT FOR SHORT TO
GROUND
z
Measure the resistance between:
{
CKP_SHLD assembly
connector wiring harness
side and ground
z
Is the resistance less than 5 ohms?
NOTE:
z
The wiring harness shield
protects the CKP signal from
electrical noise and is grounded
at one end, typically near the
PCM.
NOTE:
z
Perform the following resistance
measurement between the CKP
shield and the ground.
Yes
Go to the next step.
No
Repair the short circuit. Check for a poor
ground. Then go to Step 13.
9
INSPECT FOR SHORT BETWEEN
CKP (+) AND CKP (-) IN WIRING
HARNESS
Yes
Go to the next step.
2007 Mazda CX-9 Grand Touring
2007 ENGINE PERFORMANCE On-Board Diagnostic (MZI-3.5) - CX-9
Microsoft
Sunday, November 15, 2009 9:26:31 AM
Page 176
© 2005 Mitchell Repair Information Company, LLC.