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Home >> Lincoln >> 1999 >> Town Car Base >> Repair and Diagnosis >> Body & Frame >> Seats >> Power Seat System >> System Tests >> Test B: No Communication With Driver's Seat Module

Test B: No Communication With Driver's Seat Module

NOTE: After repairs are complete, ensure all component are properly installed and all harness connectors are connected properly and repeat data link diagnostic test. See DATA LINK DIAGNOSTIC TEST under SELF-DIAGNOSTIC SYSTEMS in appropriate MODULE COMMUNICATIONS NETWORK - TOWN CAR article.
  1. Check fuse No. 30 (7.5-amp) in instrument panel fuse box. If fuse is okay, go to next step. If fuse is blown, perform TEST A: NO COMMUNICATION WITH DRIVER'S DOOR MODULE  .
  2. Measure voltage at input cavity of fuse No. 30 at instrument panel fuse box. If battery voltage exist, go to next step. If battery voltage does not exist, perform TEST A: NO COMMUNICATION WITH DRIVER'S DOOR MODULE  .
  3. Ensure ignition switch is in LOCK position. Install fuse No. 30 in instrument panel fuse box. Disconnect Driver's Seat Module (DSM) harness connector C313. Measure voltage at terminal No. 14 (Light Green/Violet wire) at DSM harness connector C313. If battery voltage exists, go to next step. If battery voltage does not exist, repair open in Light Green/Violet wire.
  4. Measure resistance between ground and terminal No. 1 (Pink/Orange wire) at DSM harness connector C313. If resistance is 5 ohms or less, diagnosis network concern. See MODULE COMMUNICATIONS NETWORK - TOWN CAR article. If resistance is greater than 5 ohms, repair open in Pink/Orange wire.
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