Pinpoint Test M: A Single Climate Controlled Seat Is Inoperative

WARNING: This page is about a different car, the 2013 Ford F-550 Super Duty, 2013 Ford F-450 Super Duty, 2013 Ford F-350 Super Duty, and 2013 Ford F-250 Super Duty. However, it is still accessible from the selected car via links, so may be relevant.

M1 CHECK FOR DCSM DTCs
- Enter the following diagnostic mode on the scan tool: Self Test - DCSM.
- Were any DTCs retrieved during the self-tests?
- Yes : GO to the Dual Climate Controlled Seat Module (DCSM) DTC Chart .
- No : If the diagnostic scan tool did not communicate to the DCSM, REFER to MODULE COMMUNICATIONS NETWORK . Otherwise, GO to M2.
M2 CHECK OPERATION OF THE DCSM USING PIDs
NOTE: The purpose of this step is to verify the DCSM is able to receive and process inbound command messages from the communication bus and demonstrate if the DCSM is operational.
- Enter the following diagnostic mode on the scan tool: DataLogger - DCSM.
  Driver Seat
  - Seat cushion Thermo-Electric Device (TED) temperature (CSHTEMP)
  - Seat back TED temperature (BK_TEMP)
  - Climate-controlled seat heat command (TED_HEAT_D)
  Front Passenger Seat
  - Passenger Cushion Thermo-Electric Device (TED) Temperature (PCSHTMP)
  - Passenger Back TED Temperature (PBKTMP)
  - Passenger TED Heat Mode (TED_HEAT_P)
- NOTE: The DCSM active commands TED_HEAT_D (driver seat) and TED_HEAT_P (passenger seat) are limited to 15 seconds in the ON state, then turn OFF.
  
  Operate the affected climate controlled seat using the active command while monitoring the appropriate PIDs for that seat.
  - When the command is in process the TED temperature PIDs on the affected seat should momentarily increase. If no temperature increase is noted, remove the cushion blower filter and repeat the active command while physically monitoring the cushion blower for movement.
- Do the PID states or cushion blower movement indicate climate controlled seat operation when using the active command?
- Yes : GO to M3.
- No : GO to M4.
M3 USE THE TOUCHSCREEN BUTTONS AND MONITOR THE DCSM PID FOR A RESPONSE
- Enter the following diagnostic mode on the scan tool: DataLogger - DCSM.
  - Driver State Seat Mode (DCCSMOD) (driver seat)
  - Passenger State Seat Mode (PCCSMOD) (passenger seat)
- Start the engine.
- NOTE: Operation of the climate controlled seats repeatedly ON and OFF or repeatedly switching between heat and cool modes may cause DCSM DTCs to set, disabling one or both seat system and may require DTCs to be cleared before seat operation may continue. It is recommended to allow time between modes for seat temperatures to return toward ambient temperatures before continuing.
  
  Attempt to operate the affected climate controlled seat in all modes using the appropriate switch while monitoring the DCSM PID DCCSMOD (driver seat) or PCCSMOD (passenger seat).
- Do all the PID states match the climate controlled seat settings selected?
- Yes : If the fault is intermittent, CHECK for causes of the intermittent fault. INSPECT the connectors, terminals and wiring. ATTEMPT to recreate the fault by flexing the wire harness and operating the system. CHECK the electrical connectors for corrosion, poor pin contact or pushed-out pins. REPAIR any intermittent concerns found and TIGHTEN any loose DCSM connector pins. CLEAR the DTCs. REPEAT the self-test.
- No : REFER to INFORMATION AND ENTERTAINMENT SYSTEMS - 8 INCH (203MM) TOUCHSCREEN or INFORMATION AND ENTERTAINMENT SYSTEMS - SONY 8 INCH (203MM) TOUCHSCREEN to diagnose the inoperative touchscreen button(s). CLEAR the DTCs. TEST the system for normal operation.
M4 CHECK FOR CORRECT DCSM OPERATION
NOTE: If a seat equipped with a seat mounted side air bag is being serviced, the Supplemental Restraint System (SRS) must be depowered. Refer to SUPPLEMENTAL RESTRAINT SYSTEM .

NOTE: The air bag warning lamp illuminates when the Restraints Control Module (RCM) fuse is removed and the ignition switch is ON. This is normal operation and does not indicate an SRS fault.

NOTE: The SRS must be fully operational and free of faults before releasing the vehicle to the customer.
- Ignition OFF.
- WARNING: Make sure no one is in the vehicle and there is nothing blocking or placed in front of any airbag when the battery is connected. Failure to follow these instructions may result in serious personal injury in the event of an accidental deployment.
  
  For vehicles equipped with seat side air bags, carry out the following:
  - Depower the SRS. Refer to Supplemental Restraint System (SRS) Depowering and Repowering in the General Procedures portion of SUPPLEMENTAL RESTRAINT SYSTEM .
  - Disconnect the passenger seat side air bag module C339.
  - Connect the battery ground cable. Refer to BATTERY, MOUNTING AND CABLES .
- Disconnect all the DCSM electrical connectors.
- Check the harness and component side connectors for the following:
  - corrosion.
  - damaged pins.
  - pushed-out pins.
- Connect all the DCSM electrical connectors and make sure they seat correctly.
- Start the engine.
- Operate the climate controlled seats and verify the concern is still present.
- Is the concern still present?
- Yes : INSTALL a new DCSM. REFER to DUAL CLIMATE CONTROLLED SEAT MODULE (DCSM) . CLEAR all CMDTCs. REPEAT the self-test.
  For vehicles equipped with seat side air bags, DISCONNECT the battery ground cable. CONNECT passenger seat side air bag module C339. REPOWER the SRS. REFER to SUPPLEMENTAL RESTRAINT SYSTEM .
- No : The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. CLEAR all CMDTCs. REPEAT the self-test.
  For vehicles equipped with seat side air bags, DISCONNECT the battery ground cable. CONNECT passenger seat side air bag module C339. REPOWER the SRS. REFER to SUPPLEMENTAL RESTRAINT SYSTEM .