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Test 4C - Repairing Communication W/ Trans CNTRL Module

NOTE: For connector terminal identification, see CONNECTOR IDENTIFICATION  . For wiring diagrams, see WIRING DIAGRAMS  Perform TEST VER-1 after each repair.
CAUTION: Always turn ignition switch to OFF position prior to disconnecting any module connector.
  1. Using DRB, read body computer trouble codes. If DRB displays TRANS PRNDL FAILED, go to step 4). If DRB does not display TRANS PRNDL FAILED, go to next step.
  2. Using DRB, actuate PRNDL lamps. If each lamp illuminates individually then all at once, test passes. Go to next step. If test fails, repair or replace instrument cluster. See appropriate INSTRUMENT PANEL article in ACCESSORIES/SAFETY EQUIPMENT.
  3. Using DRB, select Transmission Control Module (TCM). Select monitors in state displays. Monitor Shift Lever Position (SLP) state of shift lever status. Apply parking brake. Move gear shift lever through all positions. If SLP state matches gear shift lever position, repair or replace instrument cluster. See appropriate INSTRUMENT PANEL article in ACCESSORIES/SAFETY EQUIPMENT. If SLP state does not match gear shift lever position, repair transmission.
    NOTE: Low battery or momentary Chrysler Collision Detection (CCD) bus failure may cause trouble codes to set.
  4. Using DRB, erase trouble codes. Start and run engine for 2 minutes. Turn engine off. Turn ignition switch to ON position. Using DRB, read body computer trouble codes. If TRANS PRNDL FAILED trouble code does not return, system is operating properly at this time. If TRANS PRNDL FAILED trouble code returns, go to next step.
  5. Turn ignition switch to OFF position. Disconnect Transmission Control Module (TCM) connector. TCM is located in engine compartment between left front fender and battery. Turn ignition switch to ON position. Using DRB in voltmeter mode, check voltage on TCM connector terminal No. 43 (Violet/Brown wire). If voltage is less than 2 volts, repair open Violet/Brown wire. If voltage is more than 2 volts, go to next step.
  6. Check voltage on TCM connector terminal No. 4 (White/Black wire). If voltage is less than 2 volts, repair open White/Black wire. If voltage is more than 2 volts, replace TCM.
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