• | Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. |
• | Review Strategy Based Diagnosis for an overview of the diagnostic approach. |
• | Diagnostic Procedure Instructions provides an overview of each diagnostic category. |
Circuit | Short to Ground | High Resistance | Open | Short to Voltage | Signal Performance |
---|---|---|---|---|---|
5V Reference | P0107 | P0106, P0107 | P0107 | P0108 | P0106, P0107 |
MAP Sensor Signal | P0107 | P0106, P0107 | P0107 | P0106, P0108 | P0106, P0107 |
Low Reference | -- | P0106, P0107 | P0106, P0108 | -- | P0106, P0108 |
Circuit | Short to Ground | Open | Short to Voltage |
---|---|---|---|
Operating Conditions: Engine running, transmission in Park or Neutral Parameter Normal Range: 20-48 kPa (varies with altitude) | |||
5V Reference | 0 kPa | 6 kPa | 127 kPa |
MAP Sensor Signal | 0 kPa | 0 kPa | 127 kPa |
Low Reference | -- | 127 kPa | -- |
The MAP sensor has a 5V reference circuit, a low reference circuit, and a signal circuit. The engine control module (ECM) supplies 5V to the MAP sensor on a 5V reference circuit, and provides a ground on a low reference circuit. The MAP sensor provides a voltage signal to the ECM on a signal circuit relative to the intake manifold pressure changes.
• | DTCs P0120, P0121, P0122, P0123, P0220, P0222, P0223, P0641, P0651 or P2135 are not set. |
• | The engine is running greater than or equal to 400 RPM. |
• | The throttle position is greater than or equal to 0 percent when the engine speed is less than or equal to 1,000 RPM. |
OR |
• | The throttle position is greater than or equal to 12.5 percent when the engine speed is greater than 1,000 RPM. |
• | The DTC runs continuously when the above conditions are met. |
• | The engine has been running for a length of time that is determined by the start-up coolant temperature. The length of time ranges from 5.5 minutes at colder than -30°C (-22°F) to 10 seconds at greater than +30°C (+86°F). |
• | DTCs P0120, P0121, P0122, P0123, P0220, P0222, P0223, or P2135 are not set. |
• | The throttle position is less than or equal to one percent when the engine speed is less than or equal to 1,200 RPM. |
OR |
• | The throttle position is less than or equal to 20 percent when the engine speed is greater than 1,200 RPM. |
• | The DTC runs continuously when the above conditions are met. |
The ECM detects that the MAP sensor voltage is less than 0.05V for greater than 5 seconds.
The ECM detects that the MAP sensor voltage is more than 4.9V for greater than 5 seconds.
DTCs P0107 and P0108 are Type B DTCs.
DTCs P0107 and P0108 are Type B DTCs.
Powertrain Diagnostic Trouble Code (DTC) Type Definitions
Control Module References for scan tool information
• | J 23738-A Mityvac |
• | J 35555 Metal Mityvac |
⇒ | If any of the DTCs are set, refer to DTC P0641 or P0651. |
⇒ | If greater than the specified range, test the low reference circuit for an open/high resistance. If the circuit tests normal, replace the ECM. |
⇒ | If less than the specified range, test the 5V reference circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the ECM. |
⇒ | If greater than the specified range, test the 5V reference circuit for a short to voltage. If the circuit tests normal, replace the ECM. |
⇒ | If greater than the specified range, test the signal circuit terminal 3 for a short to voltage. If the circuit tests normal, replace the ECM. |
⇒ | If less than the specified range, test the signal circuit for short to ground or an open/high resistance. If the circuit tests normal, replace the ECM. |
Note: You must perform the Circuit/System Testing before proceeding with the Component Testing.
⇒ | If the voltage reading is erratic, replace the MAP sensor. |
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
• | Control Module References for ECM replacement, setup, and programming |