Mazda MX-6 1998, Руководство по ремонту

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TROUBLESHOOTING [ENGINE CONTROL FS]
4 ENGINE STALLS -A FTE R START, AT IDLE
DESCRIPTION Engine stops unexpectedly
POSSIBLE
CAUSE
• Operation of immobilizer system
• Air leak from intake air system parts
• Improper operation of I AC valve
• No signal from crankshaft position sensor due to sensor, related wire or wrong installation
• Spark leak from high-tension leads
• PCV valve malfunction
• Restriction in exhaust system
• Open or short circuit in fuel pump and related harness
• Inadequate fuel pressure
• Fuel leak from fuel injector
• A/C system improperly operation
• Purge solenoid valve malfunction
• EGR valve malfunction
• Low engine compression
• Vacuum leak
• Poor fuel quality
• Air cleaner restriction
• Electrical connector disconnection
• No battery power supply to PCM or poor ground
• Fuel pump mechanical malfunction
• Fuel injector clogged
Warning
Following troubleshooting flow chart contains fuel system diagnosis and repair procedures. Read
following warnings before performing fuel system service:
• 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 leaks 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.
d - 0 1 -1 4 BEFORE REPAIR PROCEDURE
cr
0 1 -1 4 AFTER REPAIR PROCEDURE
STEP
INSPECTION
ACTION
1
N ote
• Following test should be performed on
vehicles equipped with immobilizer system.
Skip this test and go to step 12 for
non-immobilizer system.
Attempt to start engine at least four times.
Then, retrieve and record any continuous
memory DTC.
Is following condition appeared?
• Engine is not completely started and DTC
P1624 is restrieved.
Yes Go to step 3.
No Go to next step.
2
Is engine stalled after approx. 2 seconds
since engine is started?
Yes Go to next step.
No immobilizer system is okay.
3 Is immobilizer unit connector securely
connected to immobilizer unit?
Yes Go to next step.
No Connect immobilizer unit connector securely.
Return step 2.
4
Does security light flash and indicate following
immobilizer DTCs?
DTC: 01, 02, 03, 11,21 Yes Go to “ON BOARD DIAGNOSTIC FUNCTION” of
immobilizer system.
No Go to next step.
5 Does security light illuminate?
Yes Go to step
8
.
No
Go to next step.
6
Does security flush and indicate following
immobilizer system DTC after more than 135
seconds after ignition switch turned ON?
DTC: 24, 30
Yes
Go to “ON BOARD DIAGNOSTIC FUNCTION" of
immobilizer system.
No Go to next step.
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