F2–178
TROUBLESHOOTING
End Of Sie
NO.5 ENGINE STALLS-AFTER START/AT IDLE
A6E408018881207
Diagnostic Procedure
18 Verify test results.
• If okay, return to diagnostic index to service any additional symptoms.
• If malfunction remains, replace PCM. (See F2–64 PCM REMOVAL/INSTALLATION)
STEP INSPECTION RESULTS ACTION
5 ENGINE STALLS-AFTER START/AT IDLE
DESCRIPTION • Engine stops unexpectedly.
POSSIBLE
CAUSE
• Poor fuel quality
• Intake-air system restriction or clogging
• Engine overheating
• A/C system improper operation
• Immobilizer system (PATS) and/or circuit malfunction (if equipped)
• PCM control relay malfunction
• Glow system malfunction
• Inadequate fuel pressure
• Fuel pressure sensor related circuit malfunction
• Suction control valve malfunction (built-in supply pump)
• Fuel pressure limiter malfunction (built-in common rail)
• Fuel leakage
• Fuel line clogging or restriction
• Fuel filter clogging or restriction
• Incorrect fuel injection timing
• Erratic signal from CKP sensor
• Erratic signal from CMP sensor
• Supply pump malfunction
• Fuel injector malfunction
• Low engine compression
• Improper valve timing
• Exhaust system and/or catalyst converter restriction or clogging
• EGR system malfunction
• ECT sensor or related circuit malfunction
• Accelerator positions sensor or related circuit malfunction
• Accelerator positions sensor misadjustment
• MAF/IAT sensor or related circuit malfunction
• V-reference voltage supply circuit malfunction
• IDM or related circuit 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 injury 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.
STEP INSPECTION RESULTS ACTION
1 Note
• The following test should be perform for
vehicles with immobilizer system. Go to
Step 10 for vehicles without immobilizer
system.
Connect WDS or equivalent to DLC-2.
Do following conditions appear?
• Engine is not completely started.
• DTC B1681 is displayed.
Yes Both conditions appear:
Go to Step 4.
No Either or other condition appears:
Go to next step.
2 Is coil connector securely connected to coil? Yes Go to next step.
No Connect coil connector securely.
Return to Step 1.
3 Does security light illuminate? Yes Go to next step.
No Inspect instrument cluster and wiring harness.
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