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Home >> Cadillac >> 2010 >> Escalade EXT >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System & Fuel System - 5.3L, 6.0L, 6.2L - DTC P0010 To DTC P0231/P025A >> DTC P0107 or P0108 >> Component Testing
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Component Testing

IMPORTANT: You must perform the Circuit/System Testing in order to verify the integrity of the MAP sensor circuits before proceeding with the Component Testing.
  1. Turn ON the ignition, with the engine OFF, and remove the MAP sensor.
  2. Install a 3A fused jumper wire between the 5-volt reference circuit and the corresponding terminal of the MAP sensor.
  3. Install a jumper wire between the low reference circuit of the MAP sensor and ground.
  4. Install a jumper wire at the MAP sensor signal circuit.
  5. Connect a DMM between the jumper wire from the MAP sensor signal circuit and ground.
  6. Install the J-35555  to the MAP sensor vacuum port. Slowly apply vacuum to the sensor while observing the voltage on the DMM. The voltage should vary between 0-5.2 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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