FixVault
Home › Jeep › 2002 › Grand Cherokee Overland › Repair and Diagnosis › Body & Frame › Body, Cab Control Systems › Body Control Modules › Symptom Tests › Memory Seat › Driver Seat Rear Riser Movement Inoperative

Driver Seat Rear Riser Movement Inoperative

Possible Causes are:

  1. Using the DRBIII(R), select: Body, Memory Seat Module Actuators. Actuate the Rear Riser Motor Up, then Down. Did the Rear Riser Motor operate in both directions? If yes, go to next step. If no, go to step  6 .
  2. Turn ignition off. Remove seat to gain access to the connectors. Disconnect the Seat Module C1 connector. Disconnect the Driver Power Seat Switch connector. Measure the resistance of the Seat Rear Down Switch Sense circuit between the Seat Module connector and the Seat Switch connector. Is the resistance less than 5 ohms? If yes, go to next step. If no, repair the open Seat Rear Down Switch Sense wire. Perform MEMORY SYSTEM VERIFICATION TEST  under VERIFICATION TESTS.
  3. Turn ignition off. Raise the Driver Seat as high as possible to gain access to the connectors. Disconnect the Seat Module C1 connector. Disconnect the Driver Power Seat Switch connector. Measure the resistance of the Seat Rear Up Switch Sense circuit between the Seat Module connector and the Seat Switch connector. Is the resistance less than 5 ohms? If yes, go to next step. If no, repair the open Seat Rear Up Switch Sense wire. Perform MEMORY SYSTEM VERIFICATION TEST  under VERIFICATION TESTS.
  4. Ensure the Driver Power Seat Switch is fully connected. Disconnect the Seat Module Cl connector. Connect a test light between the Seat Rear Up Switch Sense circuit and the Seat Rear Down Switch Sense circuit in the seat module connector. Move the Seat Rear Riser Switch to the Up and then the Down positions and observe the test light. Did the test light illuminate when the switch was moved in BOTH directions. If yes, go to next step. If no, replace the driver power seat switch. Perform MEMORY SYSTEM VERIFICATION TEST  under VERIFICATION TESTS.
  5. If there are no possible causes remaining, replace the Memory Seat Module. Perform MEMORY SYSTEM VERIFICATION TEST  under VERIFICATION TESTS.
  6. Turn ignition off. Remove seat to gain access to the connectors. Disconnect the Seat Module C2 connector. Disconnect the driver power seat rear riser motor connector. Measure the resistance of the Seat Rear Down Driver circuit between the Seat Module connector and the seat front riser motor connector. Is the resistance less than 5 ohms? If yes, go to next step. If no, repair the open Seat Rear Down Driver wire. Perform MEMORY SYSTEM VERIFICATION TEST  under VERIFICATION TESTS.
  7. Remove seat to gain access to the connectors. Disconnect the Seat Module C2 connector. Disconnect the driver power seat rear riser motor connector. Measure the resistance of the Seat Rear Up Driver circuit between the Seat Module connector and the seat rear riser motor connector. Is the resistance less than 5 ohms? If yes, go to next step. If no, repair the open Seat Rear Up Driver wire. Perform MEMORY SYSTEM VERIFICATION TEST  under VERIFICATION TESTS.
  8. Remove seat to gain access to the connectors. Disconnect the Seat Module C2 connector. Ensure the Seat Horizontal Motor connector is connected at this time. Connect a jumper wire from the Seat Rear Up Driver circuit to the Ground circuit in the Seat Module C2 connector. Connect a jumper wire to the Seat Rear Down Driver circuit and momentarily touch it to the Fused B (+) circuit. Reverse the Ground and Fused B (+) jumper wires momentarily to run the motor in the opposite direction. Did the Seat Rear Riser Motor run in both directions. If yes, go to next step. If no, replace the seat track assembly. Perform MEMORY SYSTEM VERIFICATION TEST  under VERIFICATION TESTS.
  9. If there are no possible causes remaining, replace the Memory Seat Module. Perform MEMORY SYSTEM VERIFICATION TEST
About FixVault