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Starting System: Other Lincoln LS I рестайлинг

Starter 6 illustrations ~1358 words

DIGITAL TRANSMISSION RANGE SENSOR

  1. Place transmission in Neutral. Raise and support vehicle. Remove the muffler. Remove heat shields. Mark front driveshaft flex coupling components to ensure installation is in same position. Using Driveshaft Coupler Torquing Wrenches (205-474), loosen driveshaft coupler nut, located in front of driveshaft bushing.
  2. Remove front driveshaft flex coupling nuts. DO NOT remove flex coupling bolts. Slide driveshaft back to clear transmission flange. Support driveshaft. Support transmission. Remove transmission mount. Lower transmission to access Digital Transmission Range (DTR) sensor. Disconnect manual shift control cable.
  3. Disconnect DTR harness connector. Loosen DTR sensor bolts. Using DTR Sensor Aligner (T97L-70010-A), align DTR sensor slots. Tighten DTR sensor bolts to specification. See «TORQUE SPECIFICATIONS»(ref-167960-S00365793432004102600000) . To complete assembly, reverse removal procedure. Use marks to align components in original positions. Use Loctite on flex coupling nuts.

SYSTEM TESTS

CAUTIONWhen battery is disconnected, vehicle computer and memory systems may lose memory data. Driveability problems may exist until computer systems have completed a relearn cycle. See COMPUTER RELEARN PROCEDURES article in GENERAL INFORMATION before disconnecting battery. Before testing starter, ensure transmission is in Park or Neutral.
SymptomPerform Test
Engine Does Not CrankA
Unusual Starter NoiseB
Engine Cranks Slowly(1)
Starter Spins But Engine Does Not Crank(2)
(1) Perform VOLTAGE DROP TEST under ON-VEHICLE TESTING. (2) Inspect starter motor mounting. Inspect flywheel ring gear and starter motor gear for damaged and missing teeth. Repair or replace components as necessary.
(1)Perform VOLTAGE DROP TEST under ON-VEHICLE TESTING.
(2)Inspect starter motor mounting. Inspect flywheel ring gear and starter motor gear for damaged and missing teeth. Repair or replace components as necessary.

SYMPTOM INDEX

Scheme 6

Scheme 6: TEST A: ENGINE DOES NOT CRANK
Scheme 6: TEST A: ENGINE DOES NOT CRANK

Scheme 7

Scheme 7
Scheme 7

Scheme 8

Scheme 8
Scheme 8

Scheme 9

Scheme 9
Scheme 9

Scheme 10

Scheme 10
Scheme 10
  1. Check for Passive Anti-Theft System (PATS) Diagnostic Trouble Codes (DTC). See appropriate PASSIVE ANTI-THEFT SYSTEMS article. If no PATS DTCs exist, go to next step. If any PATS DTCs exist, diagnose and repair as necessary.
  2. Verify battery condition. Battery voltage should be 12 volts or more. Load test battery at approximately one-half cold cranking amperage rating. See load tester manufacturer's instructions. If battery is okay, go to next step. If battery voltage is less than 12 volts or loaded battery voltage is less than 9.6 volts, service battery or charging system as necessary. Check system operation.
  3. Measure voltage between positive battery post and negative battery cable connection at engine block. If voltage is more than 10 volts, go to next step. If voltage is 10 volts or less, replace battery ground cable. Check system operation.
  4. Measure voltage between positive battery post and starter motor case. If voltage is more than 10 volts, go to next step. If voltage is 10 volts or less, clean starter mounting flange and ensure starter is mounted properly. Check system operation.
  5. Measure voltage between starter motor terminal "B" and ground. (Scheme 6) If voltage is more than 10 volts, go to next step. If voltage is 10 volts or less, replace battery positive cable. Check system operation.
  6. Connect a fused jumper wire to starter terminal "B". Momentarily touch other end of jumper wire to starter terminal "S". If starter cranked engine, go to next step. If starter did not crank engine, replace starter. See «STARTER MOTOR»(ref-167960-S40175208592004102600000) under REMOVAL & INSTALLATION. Check system operation.
  7. Disconnect starter harness connector "S" (Gray wire). Measure voltage between starter harness connector "S" (Gray wire) and ground while turning ignition switch to START position. If voltage is 10 volts or less, go to next step. If voltage is more than 10 volts, clean or repair "S" terminal and connector. Check system operation.
  8. Remove starter relay from Auxiliary Junction Box (AJB), located underhood. Ensure vehicle is in Park or Neutral. Measure voltage between starter relay cavity No. 86 and ground while turning ignition switch to START position. (Scheme 7) If voltage is more than 10 volts, go to next step. If voltage is 10 volts or less, go to step 14.
  9. Measure resistance between starter relay cavity No. 85 and ground while turning ignition switch to START position. If resistance is 5 ohms or more, go to next step. If resistance is less than 5 ohms, go to step 11.
  10. Disconnect 20-pin instrument cluster connector C220B. Measure resistance of Black/Yellow wire between starter relay cavity No. 85 and instrument cluster connector C220B terminal No. 18. (Scheme 7)and (Scheme 8). If resistance is less than 5 ohms, replace instrument cluster. See appropriate ANALOG INSTRUMENT PANELS article in ACCESSORIES & EQUIPMENT. If resistance is 5 ohms or more, repair open on Black/Yellow wire. After repairs, check system operation.
  11. Measure voltage between starter relay cavity terminal No. 30 and ground. (Scheme 7) If voltage is more than 10 volts, go to next step. If voltage is less than 10 volts, repair open in power and distribution circuit (Red/Orange wire) to starter relay. See «WIRING DIAGRAMS»(ref-167960-S31831284282004102600000). Check system operation.
  12. Disconnect starter terminal "S" connector (Gray/Black wire). Measure resistance of Gray/Black wire between starter relay cavity terminal No. 87 and starter harness connector "S". If resistance is less than 5 ohms, go to next step. If resistance is 5 ohms or more, repair open in Gray/Black wire. Check system operation.
  13. Measure resistance between starter relay cavity terminal No. 87 (Gray/Black wire) and ground. If resistance is less than 10,000 ohms, repair short to ground in Gray/Black wire. If resistance is 10,000 ohms or more, replace starter relay. After repairs, check system operation.
  14. Remove fuse No. 1 (5-amp), located in Central Junction Box (CJB). CJB is located under right side of instrument panel. Check fuse No. 1. If fuse is okay, go to next step. If fuse is faulty, go to step 21.
  15. Measure voltage between input side of fuse No. 1 cavity in CJB and ground while turning ignition switch to START position. If voltage is less than 10 volts, go to next step. If voltage is 10 volts or more, go to step 19.
  16. Disconnect 8-pin ignition switch connector C250. Measure voltage between ignition switch harness connector C250 terminal No. 1 (Red wire) and ground. (Scheme 9) If voltage is 10 volts or more, go to next step. If voltage is less than 10 volts, repair open power feed circuit (Red wire) to ignition switch. See «WIRING DIAGRAMS»(ref-167960-S31831284282004102600000). Check system operation.
  17. Measure resistance of Gray/Black wire between ignition switch harness connector C250 terminal No. 3 and input side of fuse No. 1 cavity in CJB. If resistance is less than 5 ohms, go to next step. If resistance is 5 ohms or more, repair open in Gray/Black wire. Check system operation.
  18. Measure resistance between ignition switch harness connector C250 terminal No. 3 (Gray/Black wire) and ground. If resistance is less than 10,000 ohms, repair short to ground in Gray/Black wire. If resistance is 10,000 ohms or more, replace ignition switch. After repairs, check system operation.
  19. Install fuse No. 1 (5-amp) in CJB. Disconnect Digital Transmission Range (DTR) sensor connector. DTR is located on left side of transmission. Measure voltage between DTR sensor harness connector terminal No. 10 (Gray/Orange wire) and ground while turning ignition switch to START position. (Scheme 10) If voltage is 10 volts or more, go to next step. If voltage is less than 10 volts, repair open in Gray/Orange wire. Check system operation.
  20. Measure resistance of Gray wire between DTR harness connector terminal No. 12 and starter relay cavity No. 86. If resistance is less than 5 ohms, adjust DTR switch. See «DIGITAL TRANSMISSION RANGE SENSOR»(ref-167960-S24392156362004102600000) under ADJUSTMENTS. If resistance is 5 ohms or more, repair open in Gray wire. After repairs, check system operation.
  21. Measure resistance between output side of fuse No. 1 cavity in CJB (Gray/Orange wire) and ground. If resistance is 10,000 ohms or more, go to next step. If resistance is less than 10,000 ohms, repair short to ground in Gray/Orange wire. Check system operation.
  22. Measure resistance between DTR harness connector terminal No. 12 (Gray wire) and ground. If resistance is 10,000 ohms or more, go to next step. If resistance is less than 10,000 ohms, repair short to ground in Gray wire. Check system operation.
  23. Connect DTR sensor connector. Install new fuse No. 1 (5-amp). Check system operation. If fuse fails, replace shorted DTR sensor. Recheck system operation.

STARTER RELAY

  1. Remove starter relay from relay box. Check relay continuity. Continuity should exist between relay terminals No. 85 and 86, and between relay terminals No. 30 and 87a. (Scheme 11) Continuity should not exist between relay terminals No. 30 and 87. If continuity is as specified, go to next step. If continuity is not as specified, replace relay.
  2. Using a jumper wire, apply battery voltage to relay terminal No. 85. Using a second jumper wire, ground relay terminal No. 86. Continuity should now exist between relay terminals No. 30 and 87. If continuity is not as specified, replace relay. If continuity is as specified, relay is okay at this time.

Scheme 11

Scheme 11
Scheme 11

THUNDERBIRD

For starter system wiring diagram, see STARTING/CHARGING in SYSTEM WIRING DIAGRAMS in ELECTRICAL.

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