Pinpoint Test Ai: DTC B111D

WARNING: This page is about a different car, the 2010 Lincoln MKX and 2010 Ford Edge. However, it is still accessible from the selected car via links, so may be relevant.

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.

NOTE: The air bag warning indicator illuminates when the correct Restraints Control Module (RCM) fuse is removed and the ignition is ON.

NOTE: The Supplemental Restraint System (SRS) must be fully operational and free of faults before releasing the vehicle to the customer.

AI1 CHECK THE BLOWER CIRCUIT FOR AN OPEN
- Ignition OFF.
- Depower the SRS . Refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING .
- Disconnect: Passenger Seat Side Air Bag C327.
- Disconnect: DCSM C3036c.
- Disconnect: Cushion TED C3328.
- Disconnect: Backrest TED C3326.
- Connect the battery ground cable. Refer to BATTERY, MOUNTING AND CABLES .
- Measure the resistance between DCSM C3036c-8, circuit CHS08 (BN/YE), harness side and ground.
  
  Fig 1: Measuring Resistance Between DCSM C3036c-8, Circuit CHS08 (BN/YE), Harness Side And Ground
  Courtesy of FORD MOTOR CO.
- Is the resistance greater than 10,000 ohms?
- Yes: GO to AI2 .
- No: REPAIR the affected circuit. REPEAT the self-test. CLEAR the DTCs.
  DISCONNECT the battery ground cable.
  
  CONNECT passenger seat side air bag module C327.
  
  REPOWER the SRS . REFER to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING .
AI2 CHECK BLOWER CIRCUIT RHS08 (VT/WH) FOR A SHORT TO BLOWER CIRCUIT CHS08 (BN/YE)
- Measure the resistance between DCSM C3036c-7, circuit RHS08 (VT/WH), harness side and C3036c-8, circuit CHS08 (BN/YE), harness side.
  
  Fig 2: Measuring Resistance Between DCSM C3036c-7, Circuit RHS08 (VT/WH) And C3036c-8, Circuit CHS08 (BN/YE)
  Courtesy of FORD MOTOR CO.
- Is the resistance greater than 10,000 ohms?
- Yes: GO to AI3 .
- No: REPAIR the circuits. REPEAT the self-test. CLEAR the DTCs.
  DISCONNECT the battery ground cable.
  
  CONNECT passenger seat side air bag module C327.
  
  REPOWER the SRS . REFER to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING .
AI3 CHECK THE BLOWER RESISTANCE
- Measure the resistance between cushion TED C3328 pin 2 and pin 4, component side and between backrest TED C3326 pin 2 and pin 4, component side.
  
  Fig 3: Measuring Resistance Between Cushion TED C3327 Pin 2 And Pin 4, Component Side
  Courtesy of FORD MOTOR CO.
- Are the resistances between 4,000 ohms and 10,000 ohms?
- Yes: INSTALL a new DCSM . REFER to DUAL CLIMATE CONTROLLED SEAT MODULE (DCSM) . REPEAT the self-test. CLEAR the DTCs.
  DISCONNECT the battery ground cable.
  
  CONNECT passenger seat side air bag module C327.
  
  REPOWER the SRS . REFER to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING .
- No: If the resistance of the cushion TED was not between 4,000 ohms and 10,000 ohms, INSTALL a new cushion TED . REFER to SEAT CUSHION THERMO-ELECTRIC DEVICE . REPEAT the self-test. CLEAR the DTCs.
  If the resistance of the backrest TED was not between 4,000 ohms and 10,000 ohms, INSTALL a new backrest TED . REFER to SEAT BACKREST THERMO-ELECTRIC DEVICE . REPEAT the self-test. CLEAR the DTCs.
  
  DISCONNECT the battery ground cable. CONNECT passenger seat side air bag module C327.
  
  REPOWER the SRS . REFER to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING .