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Pinpoint Test As : DTC B19A6

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.

  1. AS1 CHECK THE BACKREST TED BLOWER SPEED CONTROL CIRCUIT FOR A SHORT TO GROUND

    • Ignition OFF.

    • Disconnect: Passenger Seat Side Air Bag C337.

    • Disconnect: DCSM C3265C.

    • Disconnect: Backrest TED C3039.

    • Measure the resistance between DCSM C3265C-4, circuit VHS21 (BU/WH), harness side and ground.

    Is the resistance greater than 10, 000 ohms? 

    Yes  GO to  AS2.
    No  REPAIR the circuit. CLEAR the DTCs. REPEAT the self-test. DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337. REPOWER the SRS. REFER to Supplemental Restraint System .

  2. AS2 CHECK THE BACKREST TED BLOWER MOTOR SPEED CONTROL AND BLOWER MOTOR GROUND CIRCUITS FOR A SHORT TOGETHER

    • Measure the resistance between DCSM C3265C-4, circuit VHS21 (BU/WH), harness side and C3265C-7, circuit RHS08 (VT/WH), harness side.

    Is the resistance greater than 10, 000 ohms? 

    Yes  INSTALL a new backrest TED. REFER to Seat Backrest Thermo-Electric Device  in this information. CLEAR the DTCs. REPEAT the self-test. If the DTC is retrieved again, INSTALL a new DCSM. REFER to Dual Climate Controlled Seat Module (DCSM)  in this information. CLEAR the DTCs. REPEAT the self-test. DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337. REPOWER the SRS. REFER to Supplemental Restraint System .
    No  REPAIR the circuits. CLEAR the DTCs. REPEAT the self-test. DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C337. REPOWER the SRS. REFER to Supplemental Restraint System .
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