Mazda 6 2002, Руководство по ремонту

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TROUBLESHOOTING
F–195
F
NO.6 CRANKS NORMALLY BUT WILL NOT START
A6E398018881W08
Diagnostic procedure
6 CRANKS NORMALLY BUT WILL NOT START
DESCRIPTION
•
Starter cranks engine at normal speed but engine will not run.
•
Refer to symptom troubleshooting "No.5 Engine stalls" if this symptom appears after engine stall.
•
Fuel is in tank.
•
Battery is in normal condition.
POSSIBLE CAUSE
•
No battery power supply to PCM
•
Air leakage from intake-air system
•
Open PCM GND or vehicle body GND
•
Improper operation of IAC valve
•
EGR valve malfunction
•
No signal from CKP sensor due to sensor, related wire or incorrect installation
•
No signal from CMP sensor due to sensor, related wire or incorrect installation
•
Low engine compression
•
Engine overheating
•
Vacuum leakage
•
Spark leakage from high-tension leads
•
Improper air/fuel mixture ratio control
•
Poor fuel quality
•
PCV valve malfunction
•
Air cleaner restriction
•
Restriction in exhaust system
•
Disconnected electrical connector
•
Open or short circuit in fuel pump body and related harness
•
Inadequate fuel pressure
•
Fuel pump mechanical malfunction
•
Fuel leakage from injector
•
Fuel injector is clogged.
•
Purge solenoid valve malfunction
•
Spark plug malfunction
•
Ignition coil malfunction
•
Improper variable valve timing control system operation (L3)
•
Improper valve timing
•
Immobilizer system (PATS) and/or circuit malfunction (if equipped)
•
Pressure regulator malfunction
Warning
The following troubleshooting flow chart contains the fuel system diagnosis and repair
procedures. Read the following warnings before performing the fuel system services:
•
Fuel vapor is hazardous. It can easily ignite, causing serious injury and damage. Always
keep sparks and flames away from fuel.
•
Fuel line spills and leakage are dangerous. Fuel can ignite and cause serious injuries or
death and damage. Fuel can also irritate skin and eyes. To prevent this, always complete
"BEFORE REPAIR PROCEDURE" and "AFTER REPAIR PROCEDURE" described in this
manual.
(See
F–17 BEFORE REPAIR PROCEDURE .)
(See F–17 AFTER REPAIR PROCEDURE .)
Caution
•
Disconnecting/connecting quick release connector without cleaning it may possibly cause
damage to fuel pipe and quick release connector. Always clean quick release connector
joint area before disconnecting/connecting, and make sure that it is free of foreign material.
STEP INSPECTION RESULTS ACTION
1 Note
•
Following test should be performed for
vehicles with immobilizer system. Go to
Step 10 for vehicles without immobilizer
system.
Connect WDS or equivalent to DLC-2.
Do any of following conditions appear?
•
Engine is not completely started.
•
DTC B1681 is displayed.
Yes Both conditions appear:
Go to Step 3.
No Either or other condition appears:
Go to next step.
2 Does engine stall after approx. 2 seconds since
engine is started?
Yes Go to next step.
No Immobilizer system is okay.
Go to Step 10.