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 MANUALSCHEVROLET2008AVEO LT, AUTOMATICREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCETESTING & DIAGNOSISENGINE CONTROLS AND FUEL - 1.6L - DTC P0630 TO DTC P2282DTC P1396 OR P1397CIRCUIT/SYSTEM TESTING
2008 Chevrolet Aveo LT, Automatic
Circuit/System Testing
2008 Chevrolet Aveo LT, AutomaticSECTION Circuit/System Testing
- Ignition OFF, disconnect the harness connector at the wheel speed sensor or the EBCM, if equipped with ABS.
- Ignition OFF, test for less than 5 ohms between the low reference circuit and ground.
- Wheel Speed Sensor LF low reference circuit terminal 2
- Wheel Speed Sensor RF low reference circuit terminal 2
- Wheel Speed Sensor LR low reference circuit terminal 1
- Wheel Speed Sensor RR low reference circuit terminal 2
- If greater than the specified range, test the low reference circuit for an open/high resistance. If the circuit tests normal, replace the ECM.
- Ignition ON, test for 4.8-5.2 volts on the signal circuit.
- Wheel Speed Sensor LF signal circuit terminal 1
- Wheel Speed Sensor RF signal circuit terminal 1
- Wheel Speed Sensor LR signal circuit terminal 2
- Wheel Speed Sensor RR signal circuit terminal 1
- If greater than the specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the ECM.
- If less than the specified range, test the signal circuit for a short to ground or an open. If the circuit tests normal, replace the ECM.
- If all circuits test normal, test or replace the wheel speed sensor or EBCM, if equipped with ABS.
IMPORTANT:
If the ABS lamp is illuminated, the ABS system must be diagnosed prior to using this diagnostic procedure. Refer to Diagnostic System Check - Vehicle
.
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.
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.