SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSMERCURY2009MILAN PREMIER, 3.0 1, AWDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 1006 (SEATING)DIAGNOSTIC TESTSSEATSSYMPTOM CHART
2009 Mercury Milan Premier, 3.0 1, AWD

Symptom Chart

2009 Mercury Milan Premier, 3.0 1, AWDSECTION Symptom Chart
WARNING: This page is about a different car, the 2008 Mercury Milan, 2008 Lincoln MKZ, and 2008 Ford Fusion. However, it is still accessible from the selected car via links, so may be relevant.
Symptom Chart

Condition Possible Sources Action
  • No communication with the driver seat module (DSM)
  • Fuse
  • Circuitry
  • DSM
  • DEPOWER the supplemental restraint system (SRS). REFER to SUPPLEMENTAL RESTRAINT SYSTEM article. DISCONNECT driver seat side air bag C327. CONNECT the battery ground cable. REFER to BATTERY, MOUNTING AND CABLES article.
  • CHECK DSM C3299a pin 2, circuit SBB32 (VT/RD) and C3299c pin 1, circuit SBB15 (WH/RD) for greater than 10 volts; REPAIR as needed. CHECK DSM C3299a pin 1, circuit GD126 (BK/WH) and C3299c pin 13, circuit GD126 (BK/WH) for less than 5 ohms to ground; REPAIR as needed. If OK, REFER to MODULE COMMUNICATIONS NETWORK article.
  • DISCONNECT the battery ground cable. CONNECT driver seat side air bag module C327. REPOWER the SRS. REFER to SUPPLEMENTAL RESTRAINT SYSTEM article.
  • No communication with the module - unable to carry out self-test with the DSM
  • Circuitry
  • DSM
  • No communication with the dual climate controlled seat module (DCSM)
  • Fuse
  • Circuitry
  • DCSM
  • DEPOWER the SRS. REFER to SUPPLEMENTAL RESTRAINT SYSTEM article. DISCONNECT passenger seat side air bag module C313. CONNECT the battery ground cable. REFER to BATTERY, MOUNTING AND CABLES article. DISCONNECT and CHECK DCSM C3305a-E, circuit SBB11 (BU/RD), harness side and DCSM C3305a-F, circuit SBB12 (GN/RD), harness side for greater than 10 volts and DCSM C3305a-M, circuit GD139 (BK/YE), harness side for less than 5 ohms to ground and REPAIR as needed. If OK, REFER to MODULE COMMUNICATIONS NETWORK article to diagnose the medium-speed controller area network (MS-CAN) communication bus concern. Once the repair is complete, DISCONNECT the battery ground cable. CONNECT the passenger seat side air bag module C313. REPOWER the SRS. REFER to SUPPLEMENTAL RESTRAINT SYSTEM article.
  • The power seat is inoperative - driver, with power recliner
  • Fuse
  • Circuitry
  • Front seat control switch
  • The power seat is inoperative - driver, without power recliner
  • Fuse
  • Circuitry
  • Front seat control switch
  • The power seat is inoperative - passenger
  • Fuse
  • Circuitry
  • Front seat control switch
  • The power seat moves but is loose
  • Fastening hardware
  • Seat track
  • The power seat moves but is noisy
  • Seat track
  • The power seat does not make full travel
  • Seat track obstructed
  • Seat track
  • The power seat does not move horizontally/vertically/recline - driver
  • Circuitry
  • Front seat motors
  • Front seat control switch
  • The power seat does not move horizontally/vertically - driver
  • Circuitry
  • Front seat motors
  • Front seat control switch
  • The power seat does not move horizontally/vertically/recline - passenger
  • Circuitry
  • Front seat motors
  • Front seat control switch
  • The memory seat is inoperative/does not operate correctly - does not operate horizontally/vertically/recline
  • Circuitry
  • Seat control switch
  • DSM
  • The memory seat does not operate correctly - does not operate using the memory SET switch
  • Circuitry
  • Memory SET switch
  • DSM
  • The memory seat does not operate correctly - the seat moves in one second intervals
  • Circuitry
  • DSM
  • REFER to the Driver Seat Module (DSM) DTC Chart.
  • The memory seat does not operate correctly - the seat does not move to the correct memory position
  • Circuitry
  • Memory SET switch
  • DSM
  • Seat track
  • REFER to the Driver Seat Module (DSM) DTC Chart.
  • The memory seat does not operate correctly - does not operate using the remote transmitter
  • Circuitry
  • DSM
  • Keyless entry transmitter
  • VERIFY the RKE transmitter is operating correctly and is associated to a memory position. REFER to Owner's Literature or HANDLES, LOCKS, LATCHES AND ENTRY SYSTEMS article for information on associating a RKE transmitter. RUN the DSM Self-Test and REFER to the Driver Seat Module (DSM) DTC Chart to diagnose any DTCs retrieved.
  • Easy exit/easy entry is inoperative/does not operate correctly
  • Circuitry
  • Key in ignition switch
  • Instrument cluster (IC) module
  • DSM
  • The power lumbar is inoperative - driver
  • Circuitry
  • Seat control switch
  • Power lumbar motor assembly
  • The power lumbar is inoperative - passenger
  • Circuitry
  • Seat control switch
  • Power lumbar motor assembly
  • The heated seat is inoperative - driver
  • Fuse
  • Circuitry
  • Heated seat switch
  • Seat cushion heater mat
  • Seat backrest heater mat
  • Heated seat module
  • The heated seat is inoperative - passenger
  • Fuse
  • Circuitry
  • Heated seat switch
  • Seat cushion heater mat
  • Seat backrest heater mat
  • Heated seat module
  • The heated seat is inoperative - driver seat does heat but the heated seat indicator does not illuminate when pressed
  • Wiring, terminals or connectors
  • HVAC module
  • Heated seat module
  • The heated seat is inoperative - passenger seat does heat but the heated seat indicator does not illuminate when pressed
  • Wiring, terminals or connectors
  • HVAC module
  • Heated seat module
  • All climate controlled seats are inoperative
  • Fuse
  • Circuitry
  • MS-CAN communication fault
  • DCSM
  • HVAC module
  • VERIFY battery junction box (BJB) fuse 11 (30A) and 12 (30A) are OK. If OK, CARRY OUT the Data Links Diagnostics test using a scan tool and verify network communication of the HVAC and DCSM. REFER to MODULE COMMUNICATIONS NETWORK article to diagnose a module communication or network concern. If OK, CARRY OUT the DCSM self-test and retrieve any DTCs. If any DTC is present, REFER to the Dual Climate Controlled Seat Module (DCSM) DTC Chart. CHECK the climate control system for correct operation. REFER to CLIMATE CONTROL SYSTEM - GENERAL INFORMATION AND DIAGNOSTICS article for diagnosis of the HVAC or climate control system. If OK, INSTALL a new dual climate controlled seat module (DCSM) and CARRY OUT programmable module installation (PMI). REFER to Dual Climate Controlled Seat Module (DCSM) .
  • A single climate controlled seat is inoperative - switch indicators may or may not illuminate
  • Circuitry
  • HVAC module
  • DCSM
    NOTE: If a fault occurs setting a DTC specific to only one climate controlled seat, the DCSM will disable only the affected seat outputs and allow the other seat to remain operational. CHECK for DTCs specific to the affected climate controlled seat and, if a DTC is present, REFER to the Dual Climate Controlled Seat Module (DCSM) DTC Chart.
    RENDER: 1.0x

    NO RELATED

    Recommended Tools & Savings

    Use the Manual With the Right Hardware

    Pair factory procedures with proven DIY tools so the instructions are easier to execute.

    Affiliate disclosure: We may earn a commission at no extra cost to you.

    Shop Manual-Ready ToolsFree Quote CheckQuote Shield Pro

    When to See a Mechanic

    Stop DIY work and contact a certified mechanic immediately if any of the following apply:

    • • You smell fuel, burning insulation, or see smoke.
    • • Brakes feel soft, pull hard to one side, or make grinding noises.
    • • The engine overheats, stalls repeatedly, or misfires under load.
    • • You are missing required tools, torque specs, or safe lifting equipment.
    • • You are not confident in the next step or safety outcome.