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.
When Monitored And Set Conditions
This diagnostic runs continuously when the following conditions are met:
- With the ignition on.
- System voltage above 10.38 volts.
- Engine Starter engagement (crank) commanded.
Set Conditions:
- During an engine cranking event, the PCM expects to see voltage at the Ignition Crank Sense circuit. If no voltage is detected a fault is set.
Default Actions:
- The MIL will illuminate.
| Possible Causes |
|---|
| OPEN BATTERY SUPPLY TO THE STARTER RELAYS |
| IGNITION CRANK SENSE CIRCUIT OR FUSE OPEN/HIGH RESISTANCE |
| IGNITION CRANK SENSE CIRCUIT SHORTED TO GROUND |
| STOP/START RELAY |
| STARTER SOLENOID RELAY |
| STARTER MOTOR |
| POWER DISTRIBUTION CENTER (PDC) |
| POWERTRAIN CONTROL MODULE (PCM) |
Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding. Refer to PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE [EFH] or PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE [EFC] .
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.