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.
2008 Scion xD AutomaticFACTORY OEM SERVICE PROCEDURE
Integration Relay: Inspection
- INSPECT INTEGRATION RELAY
- Inspect the EFI fuse.
- Inspect the EFI relay.
- Measure the resistance according to the value(s) in the table below.
Standard resistance
RESISTANCE SPECIFICATIONTester Connection Condition Specified Condition A1 - C1 When battery voltage absent Below 1 Ω A1 - A4 When battery voltage absent 10 kΩ or higher A4 - C1 When battery voltage absent 10 kΩ or higher A1 - A4 Apply battery voltage between terminals A2 and A3 Below 1 Ω A4 - C1 Apply battery voltage between terminals A2 and A3 Below 1 Ω
- Measure the resistance according to the value(s) in the table below.
Factory Service Tools
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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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