Mazda 3 - Dtc P0340 [Lf]

Mazda 3 Workshop Manual – Engine + Wiring Diagrams + Diagnostic Trouble Codes
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341
- CKP sensor terminal A (wiring
harness-side) and PCM terminal
2Y (wiring harness-side)
- CKP sensor terminal B (wiring
harness-side) and PCM terminal
2Z (wiring harness-side)
• Is there continuity?
10
INSPECT CKP SENSOR
• Turn the ignition switch off.
• Perform CKP sensor inspection.
(See CRANKSHAFT POSITION (CKP)
SENSOR INSPECTION [LF])
• Is CKP sensor normal?
Yes
Go to the next step.
No
Inspect the CKP sensor pulse wheel for damage.
Replace the CKP sensor pulse wheel and go to
the next step.
11
VERIFY TROUBLESHOOTING OF DTC
P0335 COMPLETED
• Make sure to reconnect all disconnected
connectors.
• Turn the ignition switch to the ON
position (Engine off).
• Clear the DTC from the PCM memory
using the WDS or equivalent.
• Start engine.
• Access MAF PID using the WDS or
equivalent.
Note
• MAF PID should indicate 2.0 g/s
{0.26 lb/min} or above during
this test
• Is the same DTC present?
Yes
Replace the PCM, then go to the next step.
(See PCM REMOVAL/INSTALLATION [LF].)
No
Go to the next step.
12
VERIFY AFTER REPAIR PROCEDURE
• Perform the "After Repair Procedure".
(See AFTER REPAIR PROCEDURE
[LF].)
• Are any DTC present?
Yes
Go to the applicable DTC troubleshooting.
(See DTC TABLE [LF].)
No
Troubleshooting completed.
DTC P0340 [LF]
B3E010201085W06
DTC P0340
CMP sensor circuit problem