DTC P1507[AJ (3.0L Duratec)]
id0102a4826200
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DTC P1507 |
IAC underspeed error |
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DETECTION CONDITION
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• This DTC is set when the PCM detects engine idle speed that is less than the desired rpm.
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POSSIBLE CAUSE
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• IAC solenoid valve malfunction
• Accelerator cable misadjusting
• Actuator cable misadjusting
• Throttle valve malfunction
• Vacuum hose misconnection
• PCM malfunction
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Diagnostic procedure
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STEP |
INSPECTION |
ACTION |
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1
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VERIFY FREEZE FRAME DATA HAS BEEN RECORDED
• Has FREEZE FRAME DATA been recorded?
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Yes
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Go to next step.
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No
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Record FREEZE FRAME DATA on repair order, then go to next step.
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2
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VERIFY RELATED SERVICE INFORMATION AVAILABILITY
• Check for related Service Information and/or on-line Service Information availability.
• Is any related Service Information available?
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Yes
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Perform repair or diagnosis according to available Service Information.
• If vehicle is not repaired, then go to next step.
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No
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Go to next step.
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3
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VERIFY RELATED PENDING OR STORED DTCS
• Turn the ignition switch off, then ON (Engine OFF).
• Verify pending code or stored DTCs using M-MDS.
• Is other DTC present?
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Yes
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Repair applicable DTCs.
(See DTC TABLE[AJ (3.0L Duratec)].)
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No
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Go to next step.
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4
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INSPECT IAC SOLENOID VALVE MALFUNCTION
• Perform IAC solenoid valve inspection.
• Is IAC solenoid valve normal?
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Yes
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Go to next step.
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No
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Replace IAC solenoid valve, then go to Step 9.
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5
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INSPECT ACCELERATOR CABLE FREE PLAY
• Turn the ignition switch off.
• Is accelerator cable free play normal?
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Yes
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Go to next step.
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No
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Adjust accelerator cable free play, then go to Step 9.
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6
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INSPECT ACTUATOR CABLE FREE PLAY
• Is actuator cable adjustments normal?
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Yes
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Go to next step.
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No
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Adjust actuator cable free play, then go to Step 9.
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7
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INSPECT VACUUM HOSE CONNECTION
• Are vacuum hoses connecting accurately?
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Yes
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Go to next step.
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No
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Reconnect vacuum hose accurately, then go to step 9.
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8
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VISUAL INSPECT THROTTLE VALVE
• Remove throttle body.
• Is throttle valve fully closed?
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Yes
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Go to next step.
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No
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Clean or replace throttle body, then go to next step.
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9
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VERIFY TROUBLESHOOTING OF DTC P1507 COMPLETED
• Make sure to reconnect all disconnected connectors.
• Start engine.
• Clear DTC from PCM memory using M-MDS.
• Is PENDING CODE for this DTC present?
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Yes
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Replace PCM, then go to next step.
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No
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Go to next step.
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10
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VERIFY AFTER REPAIR PROCEDURE
• Perform "AFTER REPAIR PROCEDURE".
• Is there any DTC present?
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Yes
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Go to applicable DTC inspection.
(See DTC TABLE[AJ (3.0L Duratec)].)
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No
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Troubleshooting completed.
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