DTC Troubleshooting: P0107 (3)
DTC P0107:
 MAP Sensor Circuit Low Voltage
NOTE: Before you troubleshoot, record all freeze data and review the general troubleshooting information.
  1. Turn the ignition switch ON (II).
  1. Check the MAP SENSOR in the DATA LIST with the HDS.
Is about 0.2 V or less indicated?
YES -
Go to Step 3 .
NO -
Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at the MAP sensor/IAT sensor 2 and the ECM.■
  1. Turn the ignition switch OFF.
  1. Disconnect the MAP sensor/IAT sensor 2 4P connector.
  1. Turn the ignition switch ON (II).
  1. Check the MAP SENSOR in the DATA LIST with the HDS.
Is about 0.2 V or less indicated?
YES -
Go to Step 12 .
NO -
Go to Step 7 .
  1. Measure voltage between MAP sensor/IAT sensor 2 4P connector terminals No. 2 and No. 4.
Is there about 5 V?
YES -
Go to Step 15 .
NO -
Go to Step 8 .
  1. Turn the ignition switch OFF, and wait 2 minutes.
  1. Disconnect ECM connector No. 1 (96P).
  1. Connect MAP sensor/IAT sensor 2 4P connector terminal No. 2 to body ground with a jumper wire.
  1. Check for continuity between ECM connector No. 1 terminal No. 6 and body ground.
Is there continuity?
YES -
Go to Step 21 .
NO -
Repair open in the wire between the MAP sensor/IAT sensor 2 and ECM connector No. 1 terminal No. 6, then go to Step 17 .
  1. Turn the ignition switch OFF, and wait 2 minutes.
  1. Disconnect ECM connector No. 1 (96P).
  1. Check for continuity between MAP sensor/IAT sensor 2 4P connector terminal No. 1 and body ground.
Is there continuity?
YES -
Repair short in the wire between the MAP sensor/IAT sensor 2 and ECM connector No. 1 terminal No. 89, then go to Step 17 .
NO -
Go to Step 21 .
  1. Turn the ignition switch OFF.
  1. Reconnect all connectors.
  1. Turn the ignition switch ON (II).
  1. Reset the ECM with the HDS.
  1. Check for Temporary DTCs or DTCs with the HDS.
Is DTC P0107 indicated?
YES -
Check for poor connections or loose terminals at the MAP sensor/IAT sensor 2 and the ECM, then go to Step 1 .
NO -
Troubleshooting is complete. If any other Temporary DTCs or DTCs are indicated, go to the indicated DTC's troubleshooting.■
  1. Reconnect all connectors.
  1. Check for Temporary DTCs or DTCs with the HDS.
Is DTC P0107 indicated?
YES -
Check for poor connections or loose terminals at the MAP sensor/IAT sensor 2 and the ECM. If the ECM was updated, substitute a known-good ECM, then recheck. If the ECM was substituted, go to Step 1 .
NO -
If the ECM was updated, troubleshooting is complete. If the ECM was substituted, replace the original ECM. If any other Temporary DTCs or DTCs are indicated, go to the indicated DTC's troubleshooting.■