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Home >> Lincoln >> 2012 >> MKZ Hybrid >> Repair and Diagnosis (Single Page) >> Body & Frame >> Seat System - Seats >> Diagnosis And Testing >> Seats >> Pinpoint Tests >> Pinpoint Test Z: DTCs B1113 and B111B >> PINPOINT TEST Z: DTCs B1113 AND B111B

PINPOINT TEST Z: DTCs B1113 AND B111B

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: 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.
  1. Z1 CHECK THE TED CIRCUITS FOR A SHORT TO GROUND 
    • Ignition OFF.
    • Depower the SRS. Refer to Supplemental Restraint System (SRS) Depowering and Repowering in the General Procedures portion of SUPPLEMENTAL RESTRAINT SYSTEM .
    • Disconnect: Passenger Seat Side Air Bag Module C313.
    • Disconnect: DCSM C3305A.
    • Measure the resistance between DCSM C3305A, harness side and ground using the following chart:
      Connector Circuit
      C3305A-A CHS07 (GY/BU)
      C3305A-B RHS07 (BU)
      C3305A-C CHS06 (BU/BN)
      C3305A-D RHS06 (WH)
      Fig 1: Measuring Resistance Between DCSM C3305A, Harness Side And Ground
      G06134395Courtesy of FORD MOTOR CO.
    • Are the resistances greater than 10, 000 ohms? 
      • Yes:  GO to  Z2.
      • No:  If the resistance between C3305A-A and/or C3305A-B to ground is not  greater than 10, 000 ohms, GO to  Z6.

        If the resistance between C3305A-C and/or C3305A-D to ground is not  greater than 10, 000 ohms, GO to  Z7.

  2. Z2 CHECK THE TED CIRCUITS FOR A SHORT TO VOLTAGE 
      WARNING: Make sure no one is in the vehicle and there is nothing blocking or placed in front of any air bag module when the battery is connected. Failure to follow these instructions may result in serious personal injury in the event of an accidental deployment.
    • Connect the battery ground cable. Refer to BATTERY, MOUNTING AND CABLES .
    • Ignition ON.
    • Measure the voltage between DCSM C3305A, harness side and ground using the following chart:
      Connector Circuit
      C3305A-A CHS07 (GY/BU)
      C3305A-B RHS07 (BU)
      C3305A-C CHS06 (BU/BN)
      C3305A-D RHS06 (WH)
      Fig 2: Measuring Voltage Between DCSM C3305A, Harness Side And Ground
      G06134396Courtesy of FORD MOTOR CO.
    • Is voltage present on either circuit? 
      • Yes:  If voltage is present at C3305A-A and/or C3305A-B, GO to  Z8.

        If voltage is present at C3305A-C and/or C3305A-D, GO to  Z9.

      • No:  GO to  Z3.
  3. Z3 CHECK THE RESISTANCE OF THE TED AND WIRING 
    • Ignition OFF.
    • Measure the resistance between:
      • DCSM C3305A-A, circuit CHS07 (GY/BU), harness side and DCSM C3305A-B, circuit RHS07 (BU), harness side.
      • DCSM C3305A-C, circuit CHS06 (BU/BN), harness side and C3305A-D, circuit RHS06 (WH), harness side.
      Fig 3: Checking TED And Wiring Resistance
      G06173432Courtesy of FORD MOTOR CO.
    • Are the resistances between 0.9 and 10 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 C313. REPOWER the SRS. REFER to SUPPLEMENTAL RESTRAINT SYSTEM .

      • No:  If the resistance between DCSM C3305A-A and C3305A-B is not  between 0.9 and 10 ohms, GO to  Z5.

        If the resistance between DCSM C3305A-C and C3305A-D is not  between 0.9 and 10 ohms, GO to  Z4.

  4. Z4 CHECK THE BACKREST TED RESISTANCE 
    • Disconnect: Backrest TED C3311.
    • Measure the resistance between backrest TED C3311 pin 1 and pin 3, component side.
      Fig 4: Measuring Resistance Between Backrest TED C3311 Pin 1 And Pin 3, Component Side
      G06134384Courtesy of FORD MOTOR CO.
    • Is the resistance between 0.9 and 10 ohms? 
      • Yes:  REPAIR circuit CHS06 (BU/BN) or RHS06 (WH) for an open. REPEAT the self-test. CLEAR the DTCs.

        DISCONNECT the battery ground cable. CONNECT passenger seat side air bag module C313. REPOWER the SRS. REFER to SUPPLEMENTAL RESTRAINT SYSTEM .

      • No:  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 C313. REPOWER the SRS. REFER to SUPPLEMENTAL RESTRAINT SYSTEM .

  5. Z5 CHECK THE CUSHION TED RESISTANCE 
    • Disconnect: Cushion TED C3303.
    • Measure the resistance between cushion TED C3303 pin 1 and pin 3, component side.
      Fig 5: Measuring Resistance Between Cushion TED C3303 Pin 1 And Pin 3, Component Side
      G06134384Courtesy of FORD MOTOR CO.
    • Is the resistance between 0.9 and 10 ohms? 
      • Yes:  REPAIR circuit CHS07 (GY/BU) or RHS07 (BU) for an open. REPEAT the self-test. CLEAR the DTCs.

        DISCONNECT the battery ground cable. CONNECT passenger seat side air bag module C313. REPOWER the SRS. REFER to SUPPLEMENTAL RESTRAINT SYSTEM .

      • No:  INSTALL a new cushion TED. REFER to Seat Cushion Thermo-Electric Device  . REPEAT the self-test. CLEAR the DTCs.

        DISCONNECT the battery ground cable. CONNECT passenger seat side air bag module C313. REPOWER the SRS. REFER to SUPPLEMENTAL RESTRAINT SYSTEM .

  6. Z6 CHECK THE CUSHION TED CIRCUITS FOR A SHORT TO GROUND 
    • Disconnect: Cushion TED C3303.
    • Measure the resistance between:
      • DCSM C3305A-A, circuit CHS07 (GY/BU), harness side and ground.
      • DCSM C3305A-B, circuit RHS07 (BU), harness side and ground.
      Fig 6: Checking Cushion TED Circuits For Short To Ground
      G06076920Courtesy of FORD MOTOR CO.
    • Are the resistances greater than 10, 000 ohms? 
      • Yes:  INSTALL a new cushion TED. REFER to Seat Cushion Thermo-Electric Device  . REPEAT the self-test. CLEAR the DTCs.

        DISCONNECT the battery ground cable. CONNECT passenger seat side air bag module C313. REPOWER the SRS. REFER to SUPPLEMENTAL RESTRAINT SYSTEM .

      • No:  REPAIR the circuit(s). REPEAT the self-test. CLEAR the DTCs.

        DISCONNECT the battery ground cable. CONNECT passenger seat side air bag module C313. REPOWER the SRS. REFER to SUPPLEMENTAL RESTRAINT SYSTEM .

  7. Z7 CHECK THE BACKREST TED CIRCUITS FOR A SHORT TO GROUND 
    • Disconnect: Backrest TED C3311.
    • Measure the resistance between:
      • DCSM C3305A-C, circuit CHS06 (BU/BN), harness side and ground.
      • DCSM C3305A-D, circuit RHS06 (WH), harness side and ground.
      Fig 7: Checking Backrest TED Circuits For Short To Ground
      G06134401Courtesy of FORD MOTOR CO.
    • Are the resistances greater than 10, 000 ohms? 
      • Yes:  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 C313. REPOWER the SRS. REFER to SUPPLEMENTAL RESTRAINT SYSTEM .

      • No:  REPAIR the circuit(s). REPEAT the self-test. CLEAR the DTCs.

        DISCONNECT the battery ground cable. CONNECT passenger seat side air bag module C313. REPOWER the SRS. REFER to SUPPLEMENTAL RESTRAINT SYSTEM .

  8. Z8 CHECK THE CUSHION TED CIRCUITS FOR A SHORT TO VOLTAGE 
    • Disconnect: Cushion TED C3303.
    • Ignition ON.
    • Measure the voltage between:
      • DCSM C3305A-A, circuit CHS07 (GY/BU), harness side and ground.
      • DCSM C3305A-B, circuit RHS07 (BU), harness side and ground.
      Fig 8: Checking Cushion TED Circuits For Short To Voltage
      G06134402Courtesy of FORD MOTOR CO.
    • Is voltage present on either circuit? 
      • Yes:  REPAIR the circuit(s). REPEAT the self-test. CLEAR the DTCs.

        DISCONNECT the battery ground cable. CONNECT passenger seat side air bag module C313. REPOWER the SRS. REFER to SUPPLEMENTAL RESTRAINT SYSTEM .

      • No:  INSTALL a new cushion TED. REFER to Seat Cushion Thermo-Electric Device  . REPEAT the self-test. CLEAR the DTCs.

        DISCONNECT the battery ground cable. CONNECT passenger seat side air bag module C313. REPOWER the SRS. REFER to SUPPLEMENTAL RESTRAINT SYSTEM .

  9. Z9 CHECK THE BACKREST TED CIRCUITS FOR A SHORT TO VOLTAGE 
    • Disconnect: Backrest TED C3311.
    • Ignition ON.
    • Measure the voltage between:
      • DCSM C3305A-C, circuit CHS06 (BU/BN), harness side and ground.
      • DCSM C3305A-D, circuit RHS06 (WH), harness side and ground.
      Fig 9: Measuring Voltage Between DCSM C3305A-D, Circuit RHS06 (WH), Harness Side And Ground
      G06134403Courtesy of FORD MOTOR CO.
    • Is voltage present on either circuit? 
      • Yes:  REPAIR the circuit(s). REPEAT the self-test. CLEAR the DTCs.

        DISCONNECT the battery ground cable. CONNECT passenger seat side air bag module C313. REPOWER the SRS. REFER to SUPPLEMENTAL RESTRAINT SYSTEM .

      • No:  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 C313. REPOWER the SRS. REFER to SUPPLEMENTAL RESTRAINT SYSTEM .

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