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Home >> Chrysler >> 2003 >> Intrepid ES, 3.5 V >> Repair and Diagnosis >> External Pages >> Different car >> Section 4 (Automatic Transmission Diagnosis) >> Symptom Tests >> Back-Up Lights Illuminate While Gearshift Lever Is Not In "R" Position >> Diagnostic Procedure

Diagnostic Procedure

WARNING: This page is about a different car, the 2002 Dodge Intrepid, 2002 Chrysler Intrepid, 2002 Chrysler Concorde, and 2002 Chrysler 300M. However, it is still accessible from the selected car via links, so may be relevant.
  1. Turn ignition on and apply brakes. Place gearshift lever in position that causes back-up lights to illuminate at wrong time. If back-up lights illuminate while shifter is not in "R" position, go to next step. If back-up lights do not illuminate while shifter is not in "R" position, go to step  5.
    2. NOTE: Disconnecting TR sensor harness connector will cause DTC P0706 and possibly other DTCs to be stored in PCM. Ensure all DTCs are erased before returning vehicle to customer.
  2. Place gearshift lever in position that causes back-up lights to come on when they should not. Disconnect TR sensor harness connector. If back-up lights turn off when connector is disconnected, go to next step. If back-up lights remain illuminated when connector is disconnected, go to step  4.
  3. Replace TR sensor. See REMOVAL & INSTALLATION in appropriate SERVICING article in AUTOMATIC TRANSMISSIONS.
  4. Turn ignition on. Measure voltage of back-up light feed circuit between ground and TR sensor harness connector terminal No. 6. See WIRING DIAGRAMS . If voltage is greater than .5 volt, repair circuit for short to voltage. Ensure back-up lights work when gearshift lever is in "R" position. If voltage is .5 volt or less, testing is complete.
  5. Conditions necessary to set DTC are not present at this time. Using wiring diagram as a guide, inspect wiring and connectors associated with circuits in question. See WIRING DIAGRAMS . Wiggle wires while checking for shorted and open circuits. Repair as necessary. If circuits are okay, testing is complete.
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