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.

SYS.OK|MANUAL.DB● LIVE

HOMESERVICE MANUALSFORD2009RANGER 2D PICKUP, 2.3 D, AUTOMATICREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 16 (CHARGING SYSTEM - GENERAL INFORMATION)DIAGNOSTIC TESTSCHARGING SYSTEM - DUAL GENERATORSSYMPTOM CHART

2009 Ford Ranger 2D Pickup, 2.3 D, Automatic

Symptom Chart

2009 Ford Ranger 2D Pickup, 2.3 D, AutomaticSECTION Symptom Chart

WARNING: This page is about a different car, the 2008 Ford RV Cutaway, 2008 Ford Econoline, 2008 Ford E450 Super Duty, and 2008 Ford Cutaway. However, it is still accessible from the selected car via links, so may be relevant.

Symptom Chart

Condition	Possible Sources	Action
The charging system warning indicator is on with the engine running (the charging system voltage does not increase)	Wiring and circuitry B+ circuit fusible links Upper generator Lower generator PCM	Go to Pinpoint Test I .
The charging system warning indicator is off with the ignition switch in the RUN position and the engine off	Wiring and circuitry Upper generator Lower generator Instrument cluster (IC) PCM	Go to Pinpoint Test J .
The charging system warning indicator is on with the engine running and the battery increases voltage	IC Wiring and circuitry Upper generator Lower generator PCM	Go to Pinpoint Test K .
The charging system warning indicator operates correctly and the battery voltage does not increase	Wiring and circuitry Upper generator Lower generator Loose or damaged harness connectors	Go to Pinpoint Test L .
The battery is discharged or battery voltage is low	High key-off loads Wiring and circuitry Upper generator Lower generator	Go to Pinpoint Test M .
The charging system warning indicator flickers or is intermittent	Wiring and circuitry Upper generator Lower generator IC PCM	Go to Pinpoint Test N .
The charging system overcharges (battery voltage is greater than 15.5 volts)	Fuse Wiring and circuitry Upper generator Lower generator	Go to Pinpoint Test O .
Battery leakage or damage	Battery Wiring and circuitry Upper generator Lower generator	Go to Pinpoint Test P .
The voltage gauge reads high or low	Upper generator Lower generator IC	Go to Pinpoint Test Q .
The generator(s) is noisy	Loose bolts/brackets Drive belt Upper generator Lower generator	Go to Pinpoint Test R .
Radio interference	Upper generator Lower generator Wiring/routing In-vehicle entertainment system	Go to Pinpoint Test S .
Dual generator upper fault detected (P0620)	Wiring and circuitry Upper generator	Go to Pinpoint Test T .
Dual generator lower fault detected (P1148)	Wiring and circuitry B+ circuit fusible links Lower generator	Go to Pinpoint Test U .
Dual generator lower circuit fault detected (P1149)	Wiring and circuitry Lower generator	Go to Pinpoint Test V .
Dual generator battery lamp circuit fault detected (P0623)	Wiring and circuitry IC	REFER to INSTRUMENT CLUSTER (IC) AND WARNING CHIMES article.

RENDER: 1.0x

NO RELATED

Recommended Tools & Savings

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

Affiliate disclosure: We may earn a commission at no extra cost to you.

Shop Manual-Ready Tools Free Quote Check Quote Shield Pro

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.