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.
2006 Mercury Mariner 4WD V6-3.0L VIN 1FACTORY OEM SERVICE PROCEDURE
Tests KA: Fuel Pump (FP) Relay
PINPOINT TEST KA: FUEL PUMP (FP) RELAY
This pinpoint test is intended to diagnose the following:
^ fuel pump relay (9345)
^ inertia fuel shutoff (IFS) switch (9341)
^ harness circuits: B+ VPWR FP GND FPM and FP PWR
^ powertrain control module ( PCM) (12A650)
FP Relay Connector
Reference:
Reference:
KA1 - KA3:
KA4 - KA6:
KA7 - KA9:
KA10 - KA13:
KA14 - KA16:
KA17 - KA19:
KA20 - KA21:
KA22 - KA24:
KA25 - KA27:
KA28 - KA29:
KA30:
KA31:
KA32 - KA33:
KA34:
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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