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.
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HOMESERVICE MANUALSFORD2010RANGER 2WD L4-2.3LREPAIR AND DIAGNOSISLIGHTING AND HORNSBACKUP LAMPTESTING AND INSPECTIONPINPOINT TESTSPINPOINT TEST T: THE REVERSING LAMPS ARE ON CONTINUOUSLY
2010 Ford Ranger 2WD L4-2.3L
Pinpoint Test T: The Reversing Lamps Are On Continuously
2010 Ford Ranger 2WD L4-2.3LSECTION Pinpoint Test T: The Reversing Lamps Are On Continuously
Reversing Lamps
Pinpoint Test
Pinpoint Test T: The Reversing Lamps Are On Continuously
Refer to Wiring Diagram Set 93, Reversing Lamps for schematic and connector information. Diagrams By Number
Normal Operation
When the transmission is placed in REVERSE (R), the digital Transmission Range (TR) sensor, or the reversing lamp switch, routes the voltage to the reversing lamps.
This pinpoint test is intended to diagnose the following:
- Wiring, terminals or connectors
- Reversing lamp switch (manual transmission)
- Digital TR sensor (automatic transmission)
PINPOINT TEST T: THE REVERSING LAMPS ARE ON CONTINUOUSLY
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T1 CHECK THE REVERSING LAMPS VOLTAGE SUPPLY CIRCUIT FOR A SHORT TO VOLTAGE
- Ignition OFF.
- Disconnect: Digital TR Sensor C167.
- Disconnect: Reversing Lamp Switch C169.
- Ignition ON.
- Do the reversing lamps continue to illuminate?
Yes
REPAIR circuit CET41 (BN/YE) for a short to voltage. TEST the system for normal operation.
No
For an automatic transmission, INSTALL a new digital TR sensor. REFER to Automatic Transmission/Transaxle &/or Transmission Control Systems. TEST the system for normal operation.
For a manual transmission, INSTALL a new reversing lamp switch. TEST the system for normal operation.
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RENDER: 1.0x
NO RELATED
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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.