• | 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, P2431 | P0107 | P0106, P0108, P0533, P0641 | P0106, P0107 |
MAP Sensor Signal | P0107 | P0106, P0107, P2431 | P0107 | P0106, P0108, P0641 | P0106, P0107, P1101 |
Low Reference | -- | P0106, P0108 | P0106, P0108 | -- | P0106, P0108 |
Circuit | Short to Ground | Open | Short to Voltage |
---|---|---|---|
Operating Conditions: Ignition ON, Engine running Normal MAP Parameter: Varies 12-103 kPa | |||
5-Volt Reference | 10 kPa | 10 kPa | 104 kPa |
MAP Sensor Signal | 10 kPa | 10 kPa | 104 kPa |
Low Reference | -- | 90-103 kPa¹ | -- |
¹Varies depending on ECM version |
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 on the 5-volt reference circuit, and provides a ground on the low reference circuit.
The MAP sensor provides a voltage signal to the control module 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 more than 800 RPM. |
• | This DTC runs continuously when the above enabling 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 length of time that is determined by the start-up engine coolant temperature (ECT). The length of 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 1 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 enabling conditions are met. |
The ECM detects that the MAP sensor voltage is less than 0.1 volt for greater than 5 seconds.
The ECM detects that the MAP sensor voltage is greater than 4.8 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 Diagnostic Trouble Code (DTC) List - Vehicle . |
⇒ | If greater than the specified value, test the low reference circuit for an open/high resistance. If the circuit tests normal, replace the ECM. |
⇒ | If less than 4.8 volts, test the 5-volt reference circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the ECM. |
⇒ | If greater than 5.2 volts, test the 5-volt reference circuit for a short to voltage. If the circuit tests normal, replace the ECM. |
⇒ | If greater than 12 kPa, test the signal circuit terminal B for a short to voltage. If the circuit tests normal, replace the ECM. |
⇒ | If less than 103 kPa, test the signal circuit terminal B for a short to ground or an open/high resistance. If the circuit tests normal, replace the ECM. |
Important: You must perform the Circuit/System Testing before proceeding with the Component Testing.
⇒ | If the voltage is not within the specified range or 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 |