Mazda 3 Workshop Manual page 132

Mazda 3 Workshop Manual – Engine + Wiring Diagrams + Diagnostic Trouble Codes
INSPECT CKP SENSOR CONNECTOR
FOR POOR CONNECTION
• Turn the ignition switch off.
• Disconnect the CKP sensor connector.
3
• Inspect for poor connection (such as
damaged/pulled-out pins, corrosion).
• Is there any malfunction?
INSPECT CKP SENSOR CIRCUIT FOR
SHORT TO GND
• Turn the ignition switch off.
• Inspect for continuity between the following
terminals:
4
- CKP sensor terminal A (wiring
harness-side) and body GND
- CKP sensor terminal B (wiring
harness-side) and body GND
• Is there continuity?
INSPECT CKP SENSOR CIRCUIT FOR
SHORT TO POWER SUPPLY
• Turn the ignition switch to the ON position
(Engine off).
• Measure the voltage between the following
terminals:
5
- CKP sensor terminal B (wiring
harness-side) and body GND
- CKP sensor terminal C (wiring
harness-side) and body GND
• Is the voltage B+?
INSPECT CKP SENSOR
• Inspect the CKP sensor.
6
(See CRANKSHAFT POSITION (CKP)
SENSOR INSPECTION
• Is there any malfunction?
INSPECT PCM CONNECTOR FOR POOR
CONNECTION
• Turn the ignition switch off.
• Disconnect the PCM connector.
7
• Inspect for poor connection (such as
damaged/pulled-out pins, corrosion).
• Is there any malfunction?
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Repair or replace the terminal, then go to
Yes
Step 9.
No Go to the next step.
Repair or replace the wiring harness for a
Yes
possible short to GND, then go to Step 9.
No Go to the next step.
Repair or replace the wiring harness for a
Yes possible short to power supply, then go to
Step 9.
No Go to the next step.
Replace the CKP sensor, then go to Step 9.
Yes
(See CRANKSHAFT POSITION (CKP)
SENSOR REMOVAL/INSTALLATION
No Go to the next step.
Repair or replace the terminal, then go to
Yes
Step 9.
No Go to the next step.
- automotive repair manuals website
[Z6].)