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 MANUALSCHEVROLET2006RV CUTAWAY 6.6 2REPAIR AND DIAGNOSISENGINE PERFORMANCESYSTEMENGINE CONTROL SYSTEM - 6.6L (LLY) - DTC P0016 TO DTC P0342DTC P0106CIRCUIT/SYSTEM TESTING
2006 Chevrolet RV Cutaway 6.6 2
Circuit/System Testing
2006 Chevrolet RV Cutaway 6.6 2SECTION Circuit/System Testing
- With the ignition ON, the engine OFF, and the manifold absolute pressure (MAP) sensor disconnected, connect a test lamp between the MAP sensor 5-volt reference circuit and a good ground.
- With a DMM, measure the voltage from the probe end of the test lamp to a good ground, for a range of 4.8-5.2 volts.
- If the voltage is less than the specified range, then test the circuit for the following:
- An Open
- High resistance
- A faulty control module
- If the voltage is more than the specified range, then test the circuit for the following:
- A short to voltage
- A faulty control module
- If the voltage is less than the specified range, then test the circuit for the following:
- With the MAP sensor disconnected, use the scan tool to observe the MAP Sensor parameter for a value of less than 45 kPa.
- If the MAP Sensor parameter is more than 45 kPa, then test the MAP sensor signal circuit for the following conditions:
- A short to 5-volt reference
- A short battery voltage
- A faulty control module
- If the MAP Sensor parameter is more than 45 kPa, then test the MAP sensor signal circuit for the following conditions:
- With the MAP sensor disconnected, connect a fused jumper wire between the MAP sensor 5-volt reference circuit and the MAP sensor signal circuit. Observe the MAP Sensor parameter for the a value of more than 253 kPa.
- If the MAP Sensor parameter is less than 253 kPa, then test the MAP sensor signal circuit for the following:
- High resistance
- A faulty control module
- If the MAP Sensor parameter is less than 253 kPa, then test the MAP sensor signal circuit for the following:
- With the ignition OFF, and all electrical accessories OFF, allow sufficient time for the control module to power down. Measure the resistance between the low reference circuit of the MAP sensor connector and a good ground, for a value of less than 5 ohms of resistance.
- If the resistance is more than 5 ohms, then test the low reference circuit for the following:
- High resistance
- A faulty control module
- If all circuits test OK, replace the MAP sensor.
- If the resistance is more than 5 ohms, then test the low reference circuit for the following:
IMPORTANT:
Important: Use the J 35616-200
for this test. If the J 35616-200
is not available, use a test lamp that measures more than 20 ohms.
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.