DTC Troubleshooting: P0107 (3)

DTC P0107:  MAP Sensor Circuit Low Voltage

1.Turn the ignition switch ON (II).

2.Check the MAP SENSOR in the DATA LIST with the HDS.

Is about 3 kPa (26 mmHg, 1.0 in.Hg), or 0.23 V or less indicated?


YES - Go to 3.


NO - Intermittent failure, system is OK at this time. Check for poor connections or loose terminals at the MAP sensor and the ECM/PCM.n


3.Turn the ignition switch OFF.

4.Disconnect the MAP sensor 3P connector.

5.Turn the ignition switch ON (II).

6.Check the MAP SENSOR in the DATA LIST with the HDS.

Is about 3 kPa (26 mmHg, 1.0 in.Hg), or 0.23 V or less indicated?


YES - Go to 9.


NO - Go to 7.

7.Measure voltage between MAP sensor 3P connector terminal No. 1 and No. 3.

 

Is there about 5 V?


YES - Go to 13.


NO - Go to 8.


8.Measure voltage between ECM/PCM connector terminals A21 and A24.

 

Is there about 5 V?


YES - Repair open in the wire between the ECM/PCM (A21) and the MAP sensor, then go to 15.


NO - Go to 20.

9.Turn the ignition switch OFF.

10.Jump the SCS line with the HDS.

11.Disconnect ECM/PCM connector A (31P).

12.Check for continuity between MAP sensor 3P connector terminal No. 2 and body ground.

 

Is there continuity?


YES - Repair short in the wire between the ECM/PCM (A30) and the MAP sensor, then go to 15.


NO - Go to 20.


13.Turn the ignition switch OFF.

14.Replace the MAP sensor.

15.Reconnect all connectors.

16.Turn the ignition switch ON (II).

17.Reset the ECM/PCM with the HDS.

18.Do the ECM/PCM idle learn procedure.

19.Check for Temporary DTCs or DTCs with the HDS.

Are any Temporary DTCs or DTCs indicated?


YES - If DTC P0107 is indicated, check for poor connections or loose terminals at the MAP sensor and the ECM/PCM, then go to 1. If any other Temporary DTCs or DTCs are indicated, go to the indicated DTC's troubleshooting.


NO - Troubleshooting is complete.n


20.Update the ECM/PCM if it does not have the latest software, or substitute a known-good ECM/PCM.

21.Check for Temporary DTCs or DTCs with the HDS.

Are any Temporary DTCs or DTCs indicated?


YES - If DTC P0107 is indicated, check for poor connections or loose terminals at the MAP sensor and the ECM/PCM, then go to 1. If any other Temporary DTCs or DTCs are indicated, go to the indicated DTCs troubleshooting.


NO - If the ECM/PCM was updated, troubleshooting is complete. If the ECM/PCM was substituted, replace the original ECM/PCM.n