Multifunction Electronic Modules: Overview Lincoln MKZ I рестайлинг

Principles of Operation

Note. The Smart Junction Box (SJB) is also known as the Generic Electronic Module (GEM).

The Driver Door Module (DDM) is on the Medium Speed Controller Area Network (MS-CAN) communication network. In order to support several vehicle subsystems, the module supports communications between various modules and also supports scan tool communications.

The DDM controls the driver memory power exterior mirror. This feature allows the driver to program personalized mirror positions. Once the driver stores a mirror position, the driver can recall the setting by pressing the corresponding memory switch or by using a programmed Remote Keyless Entry (RKE) transmitter. Refer to REAR VIEW MIRRORS . The DDM also controls the lock/unlock functions of the driver door lock actuator and receives lock/unlock input information from the door lock key cylinder switch and reset information from the driver door lock actuator on vehicles with memory.

Normal Operation

When a repetitive fault causing a circuit overload is detected on certain output circuits, the Driver Door Module (DDM) disables the circuit by removing voltage, or ground, to the affected circuit. The circuit remains disabled until the fault is corrected and an on-demand self-test is run. When the on-demand self-test has been run after all faults have been corrected, any DTCs related to the fault are cleared.

1. DTC B106E (Solid State Driver Disabled Due to Short Circuit) - a continuous DTC that sets when the DDM has disabled a circuit due to a repetitive fault causing a circuit overload. For a complete list of corresponding DTCs, refer to «PRINCIPLES OF OPERATION»(ref-355947-S26473334262010013000000) .
2. DTC B106F (Module Disabled Due to External Fault) - a continuous DTC that sets when one or more output functions are permanently disabled due to a repetitive circuit overload fault. DTC B106F is set with DTC B106E. When DTC B106F is present, the DDM must be replaced after the fault condition has been corrected.

This pinpoint test is intended to diagnose the following

1. Output circuit short to ground or voltage
2. DDM

The Driver Door Module (DDM) monitors the voltage from the battery to determine if it goes above or below specific thresholds and sets DTC B1317 in continuous memory and on-demand if the DDM detects high battery voltage above 15.5 volts on circuit SBP12.

1. DTC B1317 (Battery Voltage High) - a continuous memory or on-demand DTC that sets when the DDM detects battery voltage above 15.5 volts on circuit SBP12.

This pinpoint test is intended to diagnose the following

1. Charging system concern
2. DDM

The Driver Door Module (DDM) monitors the voltage from the battery to determine if it goes above or below specific thresholds.

1. DTC B1318 (Battery Voltage Low) - a continuous memory or on-demand DTC that sets when the DDM detects battery voltage below 10 volts on circuit SBP12.

This pinpoint test is intended to diagnose the following

1. Wiring, terminals or connectors
2. High circuit resistance
3. DDM

The Driver Door Module (DDM) and the Smart Junction Box (SJB) communicate using the Medium Speed Controller Area Network (MS-CAN). Messages are exchanged between the modules on the MS-CAN for the purposes of determining what functions are being carried out.

1. DTC U0140 (Lost Communication With Body Control Module ( GEM )) - set by the DDM whenever it has lost communication to the SJB for 15 seconds or longer as long as the module voltage is between 10 and 15 volts.

This pinpoint test is intended to diagnose the following

1. Module communication
2. DDM
3. SJB

The Driver Seat Module (DSM) is on the Medium Speed Controller Area Network (MS-CAN) communication network. To support several vehicle subsystems, the module permits intermodule and scan tool communications.

The DSM controls the memory driver seat and the passenger memory power exterior mirror. This passenger memory power exterior mirror feature allows the driver to program personalized mirror positions. Once the driver stores a memory position, the driver can recall the setting by pressing the corresponding memory switch or by using a programmed Remote Keyless Entry (RKE) transmitter. Refer to SEATS .

The Driver Seat Module (DSM) controls the output of several vehicle systems by means of solid state drivers. When an overload occurs on any of these drivers, a DTC is set. The module also tracks the number of repetitive faults on each of these circuits. The module compares this number of overloads to 3 progressive thresholds established for each circuit. If the 3 thresholds have not been exceeded, then the DTC of the affected circuit can be cleared by eliminating the fault, then clearing the DTCs and running the self-test. At the point that each of the first 2 thresholds are exceeded, B106E is set along with the DTC relating to the affected circuit. Once the final threshold has been exceeded, the affected output is permanently disabled, and B106F is set along with B1342, at which time the DSM must be replaced.

1. DTC B106E (Solid State Driver Disabled Due To Short Circuit) - sets when the DSM has disabled a circuit due to a repetitive fault causing a circuit overload. A corresponding DTC for the circuit in question is also set.
2. DTC B106F (Module Disabled Due to External Fault) - sets when one or more output functions are permanently disabled due to a repetitive circuit overload fault. DTC B106F is set with DTC B1342. When DTC B106F is present, a new DSM must be installed after the fault condition has been corrected.

This pinpoint test is intended to diagnose the following

1. Output circuit short to ground or voltage
2. DSM

The Driver Seat Module (DSM) monitors the voltage from the battery to determine if it goes above or below specific thresholds.

1. DTC B1317 (Battery Voltage High) - a continuous memory or on-demand DTC that sets when the DSM detects battery voltage above 15.5 volts on circuit SBB32.

This pinpoint test is intended to diagnose the following

1. Charging system concern
2. DSM

The Driver Seat Module (DSM) monitors the voltage from the battery to determine if it goes above or below specific thresholds.

1. DTC B1318 (Battery Voltage Low) - a continuous memory or on-demand DTC that sets when the DSM detects battery voltage below 10 volts on circuit SBB32.

This pinpoint test is intended to diagnose the following

1. Wiring, terminals or connectors
2. High circuit resistance
3. DSM

The Driver Seat Module (DSM) and the Smart Junction Box (SJB) communicate using the Medium Speed Controller Area Network (MS-CAN). Messages are exchanged between the modules on the MS-CAN for the purposes of determining what functions are being carried out.

1. DTC U0140 (Lost Communication With Body Control Module ( GEM )) - set by the DSM whenever it has lost communication to the SJB for 15 seconds or longer as long as the module voltage is between 10 and 15 volts.

This pinpoint test is intended to diagnose the following

1. Module communication
2. DSM
3. SJB

The Driver Seat Module (DSM) and the Instrument Panel Cluster (IPC) communicate using the Medium Speed Controller Area Network (MS-CAN). Messages are exchanged between the modules on the MS-CAN for the purposes of determining what functions are being carried out.

1. DTC U0155 (Lost Communication with Instrument Panel Cluster ( IC ) Control Module) - set by the DSM if ignition status message is present, the DSM supply voltage is greater than 10.5 volts, the ignition must be in the on position for a minimum of 5 seconds and if messages are missing for 15 seconds or longer from the IPC over the MS-CAN .

This pinpoint test is intended to diagnose the following

1. Module communication
2. DSM
3. IPC

The Smart Junction Box (SJB) controls the output of several vehicle systems by means of solid state drivers. When an overload occurs on any of these drivers, a DTC is set. The module tracks the number of repetitive faults on each of these circuits and compares this number of overloads to 3 progressive thresholds established for each circuit. If the 3 thresholds have not been exceeded, then the DTC for the affected circuit can be cleared by eliminating the fault, then clearing the DTCs and running a self-test.

At the point that each of the first 2 thresholds are exceeded, DTC B106E is set along with the DTC relating to the affected circuit. Once the final (third) threshold is exceeded, the affected output is permanently disabled, and DTC B106F is set along with DTC B1342, at which time the SJB must be replaced.

1. DTC B106E (Solid State Driver Disabled Due to Short Circuit) - sets when the SJB has disabled a circuit due to a repetitive fault causing a circuit overload. A corresponding DTC for the circuit in question is also set.
2. DTC B106F (Module Disabled Due to External Fault) - sets when one or more output functions are permanently disabled due to a repetitive circuit overload fault. DTC B106F is set with DTC B106E. When DTC B106F is present, a new SJB must be installed after the fault condition has been corrected.

This pinpoint test is intended to diagnose the following

1. Output circuit short to ground or voltage
2. SJB

The Smart Junction Box (SJB) monitors the voltage from the battery to determine if it goes above or below specific thresholds.

1. DTC B1317 (Battery Voltage High) - a continuous memory or on-demand DTC that sets when the SJB detects battery voltage above 15.5 volts on circuit SDC02.

This pinpoint test is intended to diagnose the following

1. Charging system concern
2. SJB

The Smart Junction Box (SJB) monitors the voltage from the battery to determine if it goes above or below specific thresholds.

1. DTC B1318 (Battery Voltage Low) - a continuous memory or on-demand DTC that sets when the SJB detects battery voltage below 10 volts on circuit SDC02.

This pinpoint test is intended to diagnose the following

1. Wiring, terminals or connectors
2. High circuit resistance
3. SJB

1. DTC U0155 (Lost Communication With Instrument Panel Cluster ( IC ) Control Module) - set by the Smart Junction Box (SJB) whenever it receives invalid data from the Instrument Panel Cluster (IPC).

This pinpoint test is intended to diagnose the following

1. Module communication
2. SJB
3. IPC