P0AF0

DTC POAF0 (111): MCM Internal Temperature Sensor Circuit High Voltage

NOTE: Before you troubleshoot, record all freeze data, and review the general troubleshooting Information.

1. Turn the ignition switch ON (II).
2. Check the MPI VOLTAGE (MPI TEMPERATURE) in the DATA LIST with the HDS.

Is there more than 4.64 V (338 °F (170 °C))?

YES - Go to step 3.

NO - Intermittent failure, the system is OK at this time.

3. Update the MCM if it does not have the latest software, or substitute a known-good MCM module.
4. Turn the ignition switch ON (II).
5. Check for Temporary DTCs or DTCs with the HDS.

Is DTC P0AF0 (111) indicated?

YES - Check for poor connections or loose terminals at the MCM. If the MCM was updated, substitute a known-good MCM, then go to step 4. If the MCM was substituted, go to step 1.

NO - Go to step 6.

6. Monitor the OBD STATUS for P0AF0 (111) in the DTCs MENU with the HDS.

Does the screen indicate PASSED?

YES - If the MCM was updated, troubleshooting is complete. If the MCM was substituted, replace the original MCM. If any other Temporary DTCs or DTCs were indicated in step 5, go to the indicated DTCs troubleshooting.

NO - If the screen indicates FAILED, check for poor connections or loose terminals at the MCM. If the MCM was updated, substitute a known-good MCM, then go to step 4. If the MCM was substituted, go to step 1. If the screen indicates NOT COMPLETED, keep the ignition switch ON (II) until a result comes on.