Automotive Electrical Diagnostics in Angola, IN
No-Start Testing • Battery Drain Diagnosis • Charging System • Wiring & Sensors • Warning Lights
If you’re dealing with a no-start, repeated dead batteries, flickering lights, or confusing warning lights, it’s time for electrical diagnosis—not parts swapping. At Lonsbury Garage in Angola, IN, we specialize in automotive electrical diagnostics to pinpoint the root cause of power, ground, wiring, sensor circuit, and module concerns. Our goal is simple: fix it correctly, verify the repair, and prevent repeat failures.
Common Electrical Problems We Diagnose
If you notice any of the following, schedule an electrical diagnostic:
- No-start / intermittent start (clicking, slow crank, crank-no-start)
- Battery dying overnight (parasitic draw / battery drain)
- Battery light on or charging system warnings
- Dim/flickering lights or electrical accessories cutting out
- Random warning lights (ABS, airbag, traction, check engine) tied to power/ground faults
- Blown fuses or repeated relay failures
- Intermittent issues that change with bumps, moisture, or temperature
- Communication codes (module network/CAN related) and U-codes
No-Start & Starting System Diagnosis
Starting problems can be caused by the battery, starter, wiring, grounds, security systems, or control modules. We confirm the failure with testing and a plan that may include:
- Battery testing (state of health, load test, reserve capacity as applicable)
- Starter circuit testing (control signal, current draw, voltage drop)
- Power/ground verification at key components
- Scan data to verify crank signals, immobilizer status, and commanded outputs
- Connection inspection for corrosion, loose terminals, and damaged cables
Battery Drain (Parasitic Draw) Diagnosis
If your battery keeps dying, replacing the battery is rarely the real fix. We measure key-off draw, verify modules go to sleep, and isolate the circuit causing the drain. Common causes include:
- Stuck relays or modules that won’t power down
- Aftermarket accessories (remote starts, audio, lighting) wired incorrectly
- Door/liftgate switch issues keeping systems awake
- Wiring damage from corrosion, rodents, or previous repairs
- Shorted components drawing power when the vehicle is off
Charging System Diagnostics
A battery light or low-voltage symptoms can indicate alternator output issues, control problems, poor connections, or belt concerns. We test charging performance under real loads and verify the system strategy. Services may include:
- Alternator output testing (voltage/current under load)
- Voltage drop testing on power and ground paths
- Battery sensor testing (as equipped) and connection checks
- Wiring/connector inspection for heat, corrosion, and loose pins
- Post-repair verification to confirm stable voltage and no recurring faults
Wiring, Sensor Circuit & Module Communication Diagnosis
Modern vehicles rely on clean power, solid grounds, and reliable network communication. If a sensor code or module code is present, the root cause may be wiring, connectors, power/ground integrity, or the component itself. We can test and verify:
- Power and ground integrity using voltage drop testing
- Sensor reference/return circuits and signal plausibility
- Connector pin fit, corrosion, and terminal tension issues
- Network communication (CAN/LIN as equipped) and module wake/sleep behavior
- Scan tool data to confirm commands, inputs, and system status
Electrical Diagnostics Near You
If you’re searching for automotive electrical diagnostics near me, battery drain diagnosis in Angola, IN, or no-start troubleshooting, call (260)665-5165. We’ll schedule testing, confirm the failure, and recommend the most reliable repair path.
Electrical Diagnostic FAQs
Why does my battery keep dying?
It can be a weak battery, a charging system problem, or a parasitic draw. The right fix depends on testing battery health, charging output, and key-off current draw—then isolating the root cause.
Is it safe to drive with a battery light on?
Not for long. A charging system fault can lead to a stall and no restart once voltage drops. If the battery light is on, accessories are acting up, or the vehicle is hard to start, schedule service soon.
Why do my electrical problems come and go?
Intermittent faults are often caused by loose/corroded connections, failing grounds, damaged wiring, or moisture intrusion. We use targeted testing to catch the fault and verify the fix.
