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Home >> Chevrolet >> 2007 >> Chevy Express G2500, Van Cargo, 6.6 6 >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 10 (Engine Control System & Fuel System - 6.6L (LLY) - DTC P0016 To DTC P0341) >> DTC P0107 or P0108 >> Component Testing

Component Testing

WARNING: This page is about a different variant/trim than selected.

Dynamic Test

  1. Ignition OFF, disconnect and remove the MAP sensor.
  2. Install a 3A fused jumper wire between the 5-volt reference circuit terminal C and the terminal C of the MAP sensor.
  3. Install a jumper wire between the low reference terminal A and ground at the MAP sensor.
  4. Install a jumper wire at the signal terminal B of the MAP sensor.
  5. Connect a DMM between the jumper wire from terminal B of the MAP sensor and ground.
  6. Ignition ON, install the J 35555  to the MAP sensor vacuum port. See Special Tools . Slowly apply vacuum to the sensor while monitoring the voltage on the DMM. The voltage should vary between 4.9-0.04 volts, without any spikes or dropouts.
    • If the voltage is not within the specified range or is erratic, replace the MAP sensor.
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