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Home >> Mercury >> 2008 >> Milan Base, 2.3 Z, Automatic >> Repair and Diagnosis >> External Pages >> Different car >> Section 1699 (Seat System - Seats) >> Diagnostic Tests >> Seats >> Pinpoint Tests >> Pinpoint Test W: DTC B1676 >> Pinpoint Test W: DTC B1676

Pinpoint Test W: DTC B1676

WARNING: This page is about a different car, the 2010 Lincoln Town Car. However, it is still accessible from the selected car via links, so may be relevant.
WARNING: Remove restraint system diagnostic tools from the vehicle prior to road testing. If tools are not removed, the supplemental restraint system (SRS) device may not deploy in a crash. Failure to follow this instruction may result in serious personal injury or death in a crash and possibly violate vehicle safety standards.
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.
NOTE: Verify good battery condition before diagnosing the memory seat system. Poor battery condition may interfere with memory seat operation, even if vehicle starting is possible.
  1. W1 CHECK FOR DSM DTC B2316 
    • Enter the following diagnostic mode on the diagnostic tool: Self Test - DSM
    • Enter the following diagnostic mode on the diagnostic tool: Clear all DSM continuous memory DTCs
    • Enter the following diagnostic mode on the diagnostic tool: Self Test - DSM
    • Is DTC B2316 present? 
    1. YES  : REFER to the Master DTC Chart in MULTIFUNCTION ELECTRONIC MODULES article to diagnose the DSM concern.
    2. NO  : Go to  W2.
  2. W2 CHECK FOR VOLTAGE TO THE DSM 
    • Key in OFF position.
    • Depower the SRS. Refer to GENERAL PROCEDURES article.
    • Disconnect: Driver Seat Side Air Bag C315
    • Connect: Restraint System Diagnostic Tool 418-133 to Driver Seat Side Air Bag C315
    • Disconnect: DSM C341b
      • 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 article.
    • Key in ON position.
      • Fig 1: Measuring Voltage Between DSM C341B-2, Circuit 490 (RD), Harness Side & Ground
      GF0018442Courtesy of FORD MOTOR CO.
    • Measure voltage between DSM connector C341b-2, circuit 490 (RD), harness side and ground.
    • Is voltage between 11.5 and 16 volts? 
    1. YES  : CLEAR the DTCs. REPEAT the self-test. If DTC B1676 is retrieved again, INSTALL a new DSM and CARRY OUT Programmable Module Installation (PMI). REFER to MULTIFUNCTION ELECTRONIC MODULES article.

      Otherwise, the system is operating correctly at this time.

      DISCONNECT the battery ground cable. DISCONNECT the restraint system diagnostic tool from driver seat side air bag C315. CONNECT driver seat side air bag C315. REPOWER the SRS. REFER to GENERAL PROCEDURES article.

    2. NO  : REFER to CHARGING SYSTEM - GENERAL INFORMATION article to diagnose the charging system concern.

      DISCONNECT the battery ground cable. DISCONNECT the restraint system diagnostic tool from driver seat side air bag C315. CONNECT driver seat side air bag C315. REPOWER the SRS. REFER to GENERAL PROCEDURES article.

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