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 MANUALSCHEVROLET2006COBALT SS, 4D SEDAN, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 380 (ENGINE CONTROL SYSTEM - 3.5L - DTC P0010 TO DTC P0420)DTC P0106, P0107, OR P0108CIRCUIT/SYSTEM TESTING
2006 Chevrolet Cobalt SS, 4D Sedan, Standard
Circuit/System Testing
2006 Chevrolet Cobalt SS, 4D Sedan, StandardSECTION Circuit/System Testing
WARNING: This page is about a different car, the 2006 Chevrolet Monte Carlo and 2006 Chevrolet Impala. However, it is still accessible from the selected car via links, so may be relevant.
Always perform the Diagnostic System Check - Vehicle .
- Start the engine.
- Monitor the DTC information with the scan tool.
- If DTC P0641 or P0651 is also set, correct DTC P0641 or P0651 first.
- Turn the ignition ON, with the engine OFF.
- Disconnect the MAP sensor.
- Measure for 4.8-5.2 volts from the 5-volt reference circuit of the MAP sensor to a good ground with a DMM.
- If more than the specified value, test the circuit for a short to voltage or a faulty control module.
- If less than the specified value, test the circuit for high resistance, an open, or an intermittent and poor connection at the control module, or a faulty control module.
- Disconnect the MAP sensor
- Use a scan tool to observe the MAP sensor for less than 12 kPa.
- If the MAP sensor is more than 12 kPa then test the MAP sensor signal circuit for a short to voltage or a faulty control module.
- Use a 3-amp fused jumper wire and connect it between the MAP sensor 5-volt reference circuit and the MAP sensor signal circuit.
- Use a scan tool to observe the MAP sensor for more than 103 kPa.
- If the MAP sensor is less than 103 kPa, test the MAP sensor signal circuit for high resistance or a faulty control module.
- With the 3-amp fused jumper wire still connected between the 5-volt reference circuit of the MAP sensor and the signal circuit of the MAP sensor, observe the MAP sensor parameter with the scan tool for 4.9 volts.
- If more than 4.9 volts, replace the MAP sensor.
- If less than 4.9 volts, test the MAP sensor signal circuit between the control module and the MAP sensor for a short to ground, an open, or high resistance. Test for an intermittent and for a poor connection at the control module. If tests OK, replace the control module.
- Turn OFF the ignition and allow the control module to power down.
- With a DMM, measure for less than 5 ohms of resistance between the low reference circuit of the MAP sensor and a good ground.
- If the resistance is more than 5 ohms, test the circuit for a high resistance or a faulty control module.
- If the MAP sensor circuits test normal, replace the MAP sensor.
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.