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 MANUALSCHEVROLET2012CHEVY EXPRESS G2500, VAN PASSENGER, 4.8L ENG VIN AREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 1251 (ENGINE CONTROL SYSTEM & FUEL - HYBRID (HP2) 6.0L (LFA) - DTC P0231 TO DTC P0690)DTC P0685 OR P0690TYPICAL SCAN TOOL DATA
2012 Chevrolet Chevy Express G2500, Van Passenger, 4.8L Eng VIN A
Typical Scan Tool Data
2012 Chevrolet Chevy Express G2500, Van Passenger, 4.8L Eng VIN ASECTION Typical Scan Tool Data
WARNING: This page is about a different car, the 2008 GMC Yukon and 2008 Chevrolet Tahoe. However, it is still accessible from the selected car via links, so may be relevant.
EC Ignition Relay
| Display Parameters | Normal Range | Short to Ground | Open/High Resistance | Short to Voltage |
|---|---|---|---|---|
| Operating Conditions: Ignition ON, engine OFF, powertrain relay commanded ON. | ||||
| EC Ignition Powertrain Relay Circuit Status | OK/Incomplete | Short to GRD/Open | Short to GRD/Open | Short to B+ |
| EC Ignition Powertrain Relay Command | ON | ON | ON | ON |
| EC Ignition Powertrain Relay Feedback Signal | 12-12.9 V | 0.0 V | 0.0 V | 12-12.9 V |
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.