Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2005 Scion xA AutomaticFACTORY OEM SERVICE PROCEDURE
Problem Symptoms Table
HINT:
When a malfunction is not confirmed by a DTC (Diagnostic Trouble Code) check and the cause of problem cannot be identified through a basic inspection, troubleshoot according to the priority order indicated in the table below.
PROBLEM SYMPTOMS TABLE
| Symptoms | Suspect Areas | Reference | ||
|---|---|---|---|---|
| Engine does not crank (does not start) |
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| No initial combustion (does not start) |
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| Incomplete combustion (does not start) |
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| Engine cranks normally but difficult to start |
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| Difficult to start with cold engine |
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| Difficult to start with warm engine |
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| Incorrect fast idle (poor idling) |
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| High engine idling speed (poor idling) |
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| Low engine idling speed (poor idling) |
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DTC P0505 IDLE AIR CONTROL SYSTEM, DTC P0511 IDLE AIR CONTROL CIRCUIT PARK/NEUTRAL POSITION SWITCH ASSY (ATM) FUEL PUMP CONTROL CIRCUIT INSPECTION |
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| Rough idling |
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| Hunting (poor idling) |
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| Hesitation/Poor acceleration (poor driveability) |
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| Muffler explosion, after fire (poor driveability) |
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| Surging (poor driveability) |
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| Engine stalls soon after starting |
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| Engine stalls warm accelerator pedal released |
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| Engine stalls when shifting from N to D (1) |
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Factory Service Tools
Use the Manual With the Right Hardware
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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