Pinpoint Test H: Front Seat Height Adjustment Inoperative
- H1: CHECK FOR DIAGNOSTIC TROUBLE CODES WARNING: Before work is completed, make the airbag supplemental restraint system safe. For additional information, refer to Standard Workshop Practices article
- Using the Jaguar Land Rover approved diagnostic equipment, check for any Diagnostic trouble code(s) relating to the front seat height adjustment motor.
Are there any Diagnostic trouble code(s) set relating to the front seat height adjustment motor?
Yes: Rectify the Diagnostic trouble code(s) before continuing with this pinpoint test.
No: GO to H2.
- Using the Jaguar Land Rover approved diagnostic equipment, check for any Diagnostic trouble code(s) relating to the front seat height adjustment motor.
- H2: RUN ON DEMAND SELF TEST
- Using the Jaguar Land Rover approved diagnostic equipment, run an On Demand Self Test and check for any front seat height adjustment motor related Diagnostic Trouble Code(s).
Are there any Diagnostic trouble code(s) set relating to the front seat height adjustment motor?
Yes: Rectify the Diagnostic trouble code(s) before continuing with this pinpoint test.
No: GO to H3.
- Using the Jaguar Land Rover approved diagnostic equipment, run an On Demand Self Test and check for any front seat height adjustment motor related Diagnostic Trouble Code(s).
- H3: RUN THE CALIBRATION CYCLE
- Using the Jaguar Land Rover approved diagnostic equipment, perform routine - Calibrate Seat (0x205F). Cycle the ignition twice, operate the seat height adjustment motor to it's full extent of travel in both directions five times.
Does the seat height adjustment motor operate as expected?
Yes: No further action required.
No: GO to H4.
- Using the Jaguar Land Rover approved diagnostic equipment, perform routine - Calibrate Seat (0x205F). Cycle the ignition twice, operate the seat height adjustment motor to it's full extent of travel in both directions five times.
- H4: WIRING HARNESS INTEGRITY CHECKS
- Refer to the electrical circuit diagram, refer to the affected seat height adjustment motor circuit and inspect the motor to seat module wiring harness for damage, trapped wires or disconnected connectors.
Was a concern found with the motor to seat module wiring harness?
Yes: Rectify the concern found and retest the height adjustment motor. Cycle the ignition twice, operate the height adjustment motor to it's full extent of travel in both directions five times. If the height adjustment motor operates as expected no further action is required. If the height adjustment motor fails to operate as expected GO to H5.
No: GO to H5.
- Refer to the electrical circuit diagram, refer to the affected seat height adjustment motor circuit and inspect the motor to seat module wiring harness for damage, trapped wires or disconnected connectors.
- H5: WIRING HARNESS ELECTRICAL CHECKS NOTE: Make sure a battery support unit is connected and a battery reference voltage is obtained
- Refer to the electrical circuit diagram, complete a voltage test at the motor, test the positive and the ground of the motor and operate the height adjustment switch in the up direction and hold for five seconds, battery voltage should be observed.
Was battery voltage found?
Yes: GO to H6.
No: GO to H9.
- Refer to the electrical circuit diagram, complete a voltage test at the motor, test the positive and the ground of the motor and operate the height adjustment switch in the up direction and hold for five seconds, battery voltage should be observed.
- H6: WIRING HARNESS INTEGRITY CHECKS
- Refer to the electrical circuit diagram, refer to the affected height adjustment motor connector and check for damage.
Was any damage identified at the wiring harness connector?
Yes: Complete a wiring harness repair as required Refer to: WIRING HARNESS OVERLAY . Cycle the ignition twice, operate the height adjustment motor to it's full extent of travel in both directions five times. If the height adjustment motor operates as expected no further action is required. If the height adjustment motor fails to operate as expected GO to H7.
No: GO to H7.
- Refer to the electrical circuit diagram, refer to the affected height adjustment motor connector and check for damage.
- H7: HEIGHT ADJUSTMENT MOTOR CONNECTOR INTEGRITY CHECKS
- Check the male connector pins on the height adjustment motor.
Was a concern identified with the male pins?
Yes: Install a new front seat height adjustment motor. Cycle the ignition twice, operate the height adjustment motor to it's full extent of travel in both directions five times. If the height adjustment motor operates as expected no further action is required. If the height adjustment motor fails to operate as expected GO to H8.
No: GO to H8.
- Check the male connector pins on the height adjustment motor.
- H8: WIRING HARNESS INTEGRITY CHECKS
- Complete a connector pin drag test of the seat wiring harness female pins to identify any loose pins.
Were any pins found to be loose?
Yes: Complete a wiring harness repair as required Refer to: WIRING HARNESS OVERLAY . Cycle the ignition twice, operate the height adjustment motor to it's full extent of travel in both directions five times. If the height adjustment motor operates as expected no further action is required. If the height adjustment motor fails to operate as expected GO to H9.
No: Install a new front seat height adjustment motor. Cycle the ignition twice, operate the height adjustment motor to it's full extent of travel in both directions five times. If the height adjustment motor operates as expected no further action is required. If the height adjustment motor fails to operate as expected, raise a TA and report all of the above findings and information.
- Complete a connector pin drag test of the seat wiring harness female pins to identify any loose pins.
- H9: WIRING HARNESS ELECTRICAL CHECKS
- Refer to the electrical circuit diagram, complete a voltage test at the module, test the positive and the ground of the motor and operate the height adjustment switch in the up direction and hold for five seconds, battery voltage should be observed.
Was battery voltage found?
Yes: GO to H10.
No: GO to H11.
- Refer to the electrical circuit diagram, complete a voltage test at the module, test the positive and the ground of the motor and operate the height adjustment switch in the up direction and hold for five seconds, battery voltage should be observed.
- H10: WIRING HARNESS INTEGRITY CHECKS
- Inspect the motor to module wiring harness for damage, crushed wires or corrosion.
Was any damage, crushed wires or corrosion identified?
Yes: Complete a wiring harness repair as required Refer to: WIRING HARNESS OVERLAY . Cycle the ignition twice, operate the height adjustment motor to it's full extent of travel in both directions five times. If the height adjustment motor operates as expected no further action is required. If the height adjustment motor fails to operate as expected GO to H11.
No: GO to H11.
- Inspect the motor to module wiring harness for damage, crushed wires or corrosion.
- H11: WIRING HARNESS INTEGRITY CHECKS
- Refer to the electrical circuit diagram, refer to the affected height adjustment motor connector and check for damage.
Was any damage identified at the connector?
Yes: Complete a wiring harness repair as required Refer to: WIRING HARNESS OVERLAY . Cycle the ignition twice, operate the height adjustment motor to it's full extent of travel in both directions five times. If the height adjustment motor operates as expected no further action is required. If the height adjustment motor fails to operate as expected GO to H12.
No: GO to H12.
- Refer to the electrical circuit diagram, refer to the affected height adjustment motor connector and check for damage.
- H12: SEAT MODULE CONNECTOR INTEGRITY CHECK
- Inspect the male connector pins on the seat module.
Was a concern identified with the male pins?
Yes: Install a new front seat module. Cycle the ignition twice, operate the height adjustment motor to it's full extent of travel in both directions five times. If the height adjustment motor operates as expected no further action is required. If the height adjustment motor fails to operate as expected GO to H13.
No: GO to H13.
- Inspect the male connector pins on the seat module.
- H13: WIRING HARNESS INTEGRITY CHECKS
- Complete a connector pin drag test of the seat wiring harness female pins to identify any loose pins.
Were any pins found to be loose?
Yes: Complete a wiring harness repair as required Refer to: WIRING HARNESS OVERLAY . Cycle the ignition twice, operate the height adjustment motor to it's full extent of travel in both directions five times. If the height adjustment motor operates as expected no further action is required. If the height adjustment motor fails to operate as expected GO to H14.
No: GO to H14.
- Complete a connector pin drag test of the seat wiring harness female pins to identify any loose pins.
- H14: WIRING HARNESS ELECTRICAL CHECKS
- Refer to the electrical circuit diagram, measure the positive and ground at the seat module and check that the positive and ground are present at the seat module.
Were the positive and ground present at the module?
Yes: Complete a wiring harness repair as required Refer to: WIRING HARNESS OVERLAY . Cycle the ignition twice, operate the height adjustment motor to it's full extent of travel in both directions five times. If the height adjustment motor operates as expected no further action is required. If the height adjustment motor fails to operate as expected, raise a TA and report all of the above findings and information.
No: Install a new front seat module. Cycle the ignition twice, operate the height adjustment motor to it's full extent of travel in both directions five times. If the height adjustment motor operates as expected no further action is required. If the height adjustment motor fails to operate as expected, raise a TA and report all of the above findings and information.
- Refer to the electrical circuit diagram, measure the positive and ground at the seat module and check that the positive and ground are present at the seat module.