Pinpoint Test Ai: DTC B19A7

WARNING: This page is about a different car, the 2010 Mercury Milan, 2010 Lincoln MKZ, and 2010 Ford Fusion. 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 switch 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 CUSHION TED BLOWER MOTOR SPEED CONTROL CIRCUIT FOR A SHORT TO GROUND
- Ignition OFF.
- Depower the SRS . Refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING .
- Disconnect: Driver Seat Side Air Bag C327.
- Disconnect: Passenger Seat Side Air Bag C313.
- Disconnect: DCSM C3305c.
- Disconnect: Cushion TED C3300.
- Measure the resistance between DCSM C3305c-11, circuit VHS18 (BN/GN), harness side and ground.
  
  Fig 1: Measuring Resistance Between DCSM C3305C-11, Circuit VHS18 (BN/GN), Harness Side And Ground
  Courtesy of FORD MOTOR CO.
- Is the resistance greater than 10,000 ohms?

Yes : GO to AI2.
No : REPAIR the circuit. REPEAT the self-test. CLEAR the DTCs.
CONNECT driver seat side air bag module C327.

CONNECT passenger seat side air bag module C313.

REPOWER the SRS . REFER to GENERAL PROCEDURES

AI2 CHECK THE CUSHION TED BLOWER MOTOR SPEED CONTROL AND BLOWER MOTOR GROUND CIRCUITS FOR A SHORT TOGETHER
- Measure the resistance between DCSM C3305c-11, circuit VHS18 (BN/GN), harness side and C3305c-15, circuit RHS03 (GY/OG), harness side.
  
  Fig 2: Checking Cushion TED Blower Motor Speed Control And Blower Motor Ground Circuits For Short Together
  Courtesy of FORD MOTOR CO.
- Is the resistance 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 driver seat side air bag module C327.

CONNECT passenger seat side air bag module C313.

REPOWER the SRS . REFER to GENERAL PROCEDURES
No : REPAIR the circuits. REPEAT the self-test. CLEAR the DTCs.
CONNECT driver seat side air bag module C327.

CONNECT passenger seat side air bag module C313.

REPOWER the SRS . REFER to GENERAL PROCEDURES