Refrigerator Diagnostic Mode

WARNING: This page is about a different car, the 2015 Lincoln MKT. However, it is still accessible from the selected car via links, so may be relevant.

The refrigerator can be switched into a diagnostic mode to read potential on-demand error codes generated by the Compressor Driver Module. When the refrigerator is in diagnostic mode, the FREEZE LED on the refrigerator switch will flash 1-5 times, depending on the error. Perform the following steps in order to access the refrigerator diagnostic mode:

1.

Ignition ON.

2.

Press the refrigerator switch to the COOL position for approximately 1 second, until the COOL LED illuminates.

3.

Press the refrigerator switch again to the COOL position for approximately 5 seconds, until the COOL LED flashes quickly and repeatedly.

4.

NOTE: Use the Diagnostic Mode Error Code Chart to determine the error.

When the COOL LED is quickly flashing, the FREEZE LED will display the error code by flashing 1-5 times, depending on the error.

5.

NOTE: If the refrigerator is in diagnostic mode and the ignition is turned OFF, the refrigerator will restart in COOL mode when the ignition is turned back ON.

To exit diagnostic mode, press the refrigerator switch to the COOL position for approximately 1 second. The COOL LED will stop flashing, but will remain illuminated, and the refrigerator will be in COOL mode.

Diagnostic Mode Error Code Chart

Number of Flashes	Diagnostic Error Code	Diagnostic Error Code Description	Action
1	Battery protection cut-out	The voltage supply is below the parameter settings. This code may set when the refrigerator has been active with the engine off.	START the engine and retest. If a concern is still present, GO to Pinpoint Test A .
2	Fan over-current cut-out	The condenser cooling fan loads the compressor driver module with more than 1 peak amp.	CHECK the console vents, compressor compartment, and condenser for dust collection and/or debris. CHECK the condenser cooling fan for binding and make sure it is free of debris. CLEAN as necessary. INSPECT the condenser cooling fan wiring. TEST for normal operation with the engine running. If a concern is found with the fan or wiring, INSTALL a new refrigerator assembly. REFER to Refrigerator . If a concern was not found with the fan or wiring and error code 2 is still present after cleaning, INSTALL a new compressor driver module. REFER to Compressor Driver Module .
3	Motor start error	The rotor is blocked or the differential pressure in the refrigeration system is too high (greater than 75.2 psi / 5 bar). This may occur in high ambient temperature situations. This may also result from the refrigerator being turned off and on within a short period of time while a high load/ambient temperature is present.	TURN the refrigerator off. WAIT 15 minutes for the system to release the differential pressure. TEST for normal operation with the engine running. If the concern is still present, INSTALL a new refrigerator assembly. REFER to Refrigerator .
4	Minimum motor speed error	The compressor motor cannot maintain a minimum speed of 1, 850 rpm due to high cooling load or high ambient temperatures. Continuous compressor operation during high ambient temperatures may also cause this concern.	TURN the refrigerator off. WAIT 15 minutes for the refrigerator to cool down. TEST for normal operation with the engine running. If the concern is still present, INSTALL a new refrigerator assembly. REFER to Refrigerator .
5	Thermal cut-out of electronic unit (compressor driver module)	The compressor driver module has exceeded the maximum temperature limit due to high cooling load or high ambient temperatures.	TURN the refrigerator off. WAIT 15 minutes for the compressor driver module to cool down. CHECK the console vents, compressor compartment, and condenser for dust collection and/or debris. CHECK the condenser cooling fan for binding and make sure it is free of debris. CLEAN as necessary. INSPECT the condenser cooling fan wiring. TEST for normal operation with the engine running. If a concern is found with the fan or wiring, INSTALL a new refrigerator assembly. REFER to Refrigerator . If a concern was not found with the fan or wiring and error code 5 is still present after cleaning, INSTALL a new compressor driver module. REFER to Compressor Driver Module .