Mazda 6 2002, Workshop Manual

Page: 261 / 1248

CONTROL SYSTEM
F–132
End Of Sie
DTC P0340
A6E397001085W06
End Of Sie
11 VERIFY TROUBLESHOOTING OF DTC P0335
COMPLETED
•
Make sure to reconnect all disconnected
connectors.
•
Turn ignition key to ON (Engine OFF).
•
Clear DTC from PCM memory using WDS or
equivalent.
•
Start engine.
•
Access MAF PID using WDS or equivalent.
Note
•
MAF PID should indicate 2.0 g/s {0.26
lb/min.} or above during this test
•
Is same DTC present?
Yes Replace PCM, then go to next step.
(See
F–43 PCM REMOVAL/INSTALLATION .)
No Go to next step.
12 VERIFY AFTER REPAIR PROCEDURE
•
Perform “After Repair Procedure”.
(See
F–66 AFTER REPAIR PROCEDURE .)
•
Is there any DTC present?
Yes Go to applicable DTC troubleshooting.
(See
F–67 DTC TABLE .)
No Troubleshooting completed.
STEP INSPECTION ACTION
DTC P0340 Camshaft position (CMP) sensor circuit malfunction
DETECTION
CONDITION
•
PCM monitors input voltage from CMP sensor when engine is running. If PCM does not receive input
voltage from CMP sensor while PCM receives input signal from CKP sensor, PCM determines that CMP
circuit has malfunction.
Diagnostic support note
•
This is a continuous monitor (CCM).
•
MIL illuminates if PCM detects the above malfunction condition during first drive cycle.
•
PENDING CODE is available if PCM detects the above malfunction condition.
•
FREEZE FRAME DATA is available.
•
DTC is stored in the PCM memory.
POSSIBLE
CAUSE
•
CMP sensor malfunction
•
Connector or terminal malfunction
•
CMP sensor is dirty
•
Short to power circuit between CMP sensor terminal A and PCM terminal 2M
•
Short to power circuit between CMP sensor terminal B and PCM terminal 2J
•
Short to ground circuit between CMP sensor terminal A and PCM terminal 2M
•
Short to ground circuit between CMP sensor terminal B and PCM terminal 2J
•
Open circuit between CMP sensor terminal A and PCM terminal 2M
•
Open circuit between CMP sensor terminal B and PCM terminal 2J
•
CKP sensor pulse wheel malfunction
•
Both CMP sensor wires are shorted each other
•
CKP sensor misinstallation
•
Timing chain misinstallation
•
Loose timing chain or improper valve timing due to chain jumping
•
Loose camshaft sprocket lock bolt
•
Loose crankshaft pulley lock bolt