Mazda 626 Station Wagon, Workshop Manual

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ON-BOARD DIAGNOSTIC
STEP
INSPECTION ACTION
6 VERIFY AFTER REPAIR PROCEDURE
• Perform “After Repair Procedure."
(See F1 36 AFTER REPAIR PROCEDURE)
• Are any DTCs present?
Yes Go to applicable DTC inspection.
(See F1-37 DTC TABLE)
No Troubleshooting completed.
DTC P0335
Except for GF4A-EL Models
DTC P0335 CKP sensor circuit malfunction
DETECTION
CONDITION
If PCM does not receive input voltage from CKP sensor for 4.2 seconds while MAF is
1.99 g/sec. {0.257 Ib./min.} or above, PCM determines that CKP circuit has a malfunction.
POSSIBLE
CAUSE
CKP sensor malfunction
Connector or terminal malfunction
CKP sensor is dirty.
Short to ground between CKP sensor terminal A to PCM terminal 21
Short to ground between CKP sensor terminal B to PCM terminal 22
Open circuit between CKP sensor terminal A to PCM terminal 3D
Open circuit between CKP sensor terminal B to PCM terminal 3F
CKP sensor pulse wheel malfunction
CKP S E N S O R
PCM
CKP SE NSO R
n n n
HA R N E S S SIDE C O N N E C TO R
(VIEW FROM T E R M IN A L SIDE)
PCM
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T r r
T T
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HARNESS SIDE C O N N ECTO R
(VIEW FROM TER M IN A L SIDE)
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I I I I I I I r i I I I I J
Diagnostic procedure
STEP INSPECTION
ACTION
1 VERIFY RELATED REPAIR INFORMATION
AVAILABILITY
• Check for related Service Information
availability.
• Is any related Service Information available?
Yes Perform repair or diagnosis according to available
Service Information
• If vehicle is not repaired, then go to next step.
No Go to next step.
2 INSPECT POOR CONNECTION OF CKP
SENSOR CONNECTOR
• Turn ignition key to OFF.
• Disconnect CKP sensor connector.
• Check for poor connection (damaged,
pulled-out terminals, corrosion, etc.).
• Are there any malfunctions?
Yes Repair or replace terminal then go to Step 10.
No Go to next step.
3 CHECK CKP CIRCUIT RESISTANCE
• Check resistance between CKP sensor
terminals A and B (part-side).
• Is resistance within 540—560 £2?
Yes Connect CKP sensor connector, then go to next step.
No
Replace CKP sensor, then go to Step 10.
F1-62