• | 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 |
---|---|---|---|---|---|
5-Volt Reference | P0107, P0452, P0532, P0641 | P0106, P0107 | P0107 | P0106, P0108, P0533, P0641, P2229 | P0106, P1101 |
MAP Sensor Signal | P0107 | P0106, P0107 | P0107 | P0106, P0108, P0641 | P0106, P1101 |
Low Reference | -- | P0106, P0108 | P0106, P0108 | -- | P0106, P0108, P1101 |
Circuit | Short to Ground | Open | Short to Voltage |
---|---|---|---|
Operating Conditions: The ignition is ON, or the engine running. Normal MAP Parameter: 20-48 kPa | |||
5-Volt Reference | 10 kPa | 10 kPa | 104 kPa |
MAP Sensor Signal | 10 kPa | 10 kPa | 104 kPa² |
Low Reference | -- | 90-104¹, ² kPa | -- |
¹Varies, depending on ECM software version ²Internal ECM or sensor damage may occur if the circuit is shorted to B+ |
The manifold absolute pressure (MAP) sensor has a 5-volt reference circuit, a low reference circuit, and a signal circuit. The engine control module (ECM) supplies 5 volts to the MAP sensor on a 5-volt 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, P0221, P0222, P0223, P0641, or P0651 are not set. |
• | The throttle angle is greater than 0 percent when the engine speed is less than 800 RPM. |
OR |
• | The throttle angle is greater than 12 percent when the engine speed is greater than 800 RPM. |
• | This DTC runs continuously when the above conditions are met. |
• | DTCs P0120, P0121, P0122, P0123, P0220, P0221, P0222, P0223, P0641, or P0651 are not set. |
• | The engine has been running for a period of time that is determined by the start-up engine coolant temperature (ECT). The time ranges from 4 minutes at less than -30°C (-22°F) to 2 seconds at more than 30°C (86°F). |
• | The throttle angle is less than one percent when the engine speed is less than 1,200 RPM. |
OR |
• | The throttle angle is less than 20 percent when the engine speed is greater than 1,200 RPM. |
• | This DTC runs continuously when the above conditions are met. |
The ECM detects that the MAP sensor voltage is less than 0.10 volt for greater than 5 seconds.
The ECM detects that the MAP sensor voltage is more than 4.80 volts 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 5-volt reference circuit for an open/high resistance or a short to ground. If the circuit tests normal, replace the ECM. |
⇒ | If greater than the specified range, test the 5-volt 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 B for a short to voltage. If the circuit tests normal, replace the ECM. |
⇒ | If less than the specified range, test the sensor signal circuit for a short to ground, open, high resistance. |
Important: 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 |