Pinpoint Test Aa: DTC B19A8

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.

NOTE: Use the correct probe adapter(s) from the Flex Probe Kit when taking measurements. Failure to use the correct probe adapter(s) may damage the connector.

NOTE: When taking measurements at Dual Climate Controlled Seat Module (DCSM) harness connectors, do not insert the electrical probes into the female connector pins. Inserting the probes into connector pins can cause intermittent or open electrical connections after reassembly resulting in Diagnostic Trouble Codes (DTCs) and system failure. Touching the tip of these connector pins is recommended instead.

AA1 CHECK THE DRIVER BACKREST TED BLOWER SPEED CONTROL CIRCUIT FOR A SHORT TO GROUND
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 driver seat side air bag module C3051.
  - Disconnect the passenger seat side air bag module C339.
  - Connect the battery ground cable. Refer to BATTERY, MOUNTING AND CABLES .
- Disconnect: DCSM C3265C.
- Disconnect: Driver Backrest TED C3034.
- Measure the resistance between DCSM C3265C-12, circuit CHS09 (GY), harness side and ground.
  
  Fig 1: Measuring Resistance Between DCSM C3265C-12, Circuit CHS09 (GY) And Ground
  Courtesy of FORD MOTOR CO.
- Is the resistance greater than 10, 000 ohms?
- Yes : GO to AA2.
- No : REPAIR the circuit. CLEAR the DTCs. REPEAT the self-test.
  For vehicles equipped with seat side air bags, DISCONNECT the battery ground cable. CONNECT driver seat side air bag module C3051 and passenger seat side air bag module C339. REPOWER the SRS. REFER to SUPPLEMENTAL RESTRAINT SYSTEM .
AA2 CHECK THE DRIVER BACKREST TED BLOWER SPEED CONTROL CIRCUIT AND BLOWER GROUND CIRCUIT FOR A SHORT TOGETHER
- Measure the resistance between DCSM C3265C-12, circuit CHS09 (GY), harness side and C3265C-15, circuit RHS03 (GY/OG), harness side.
  
  Fig 2: Measuring Resistance Between DCSM C3265C-12, Circuit CHS09 (GY) And C3265C-15, Circuit RHS03 (GY/OG)
  Courtesy of FORD MOTOR CO.
- Is the resistance greater than 10, 000 ohms?
- Yes : INSTALL a new driver backrest TED. REFER to SEAT BACKREST - FRONT, BUCKET SEAT . CLEAR the DTCs. REPEAT the self-test.
  If the DTC is retrieved again, GO to AA3.
- No : REPAIR the circuits. CLEAR the DTCs. REPEAT the self-test.
  For vehicles equipped with seat side air bags, DISCONNECT the battery ground cable. CONNECT driver seat side air bag module C3051 and passenger seat side air bag module C339. REPOWER the SRS. REFER to SUPPLEMENTAL RESTRAINT SYSTEM .
AA3 CHECK FOR CORRECT DCSM OPERATION
- 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 system operation.
- CLEAR all CMDTCs.
- Enter the following diagnostic mode on the scan tool: Self Test - DCSM.
- Is DTC B19A8 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 driver seat side air bag module C3051 and 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 driver seat side air bag module C3051 and passenger seat side air bag module C339. REPOWER the SRS. REFER to SUPPLEMENTAL RESTRAINT SYSTEM .