LEMON Manuals: Even more car manuals for everyone
Home >> Jeep >> 2019 >> Grand Cherokee Laredo, AWD, Automatic T/Case Control >> Repair and Diagnosis >> Suspension >> Wheel Alignment >> Front Suspension & Wheel Alignment >> Air Suspension >> Sensor, Height >> Installation >> Front

Sensor, Height: Installation: Front

WARNING:

All pressurized air suspension components contain high pressure air (up to 220 psig). Use extreme caution when inspecting for leaks. Wear safety goggles and adequate protective clothing when inspecting or servicing the air suspension system. A sudden release of air under this amount of pressure can cause possible serious or fatal injury.

WARNING:

Before performing any service on the air suspension system, the system must be disabled to prevent the system from changing ride height. Before any given component is to be serviced it must be deflated. Servicing the air suspension system without the system disabled, or with pressure in any specific component, can cause possible serious or fatal injury.

GC0145623Courtesy of CHRYSLER GROUP, LLC
NOTE:

The spring and knuckle are removed for clarity. Right sensor shown in illustration, left sensor similar.

  1. Position the height sensor, brackets and link (2) on the two studs.
  2. Install the two height sensor retaining nuts (1) and tighten to 5 N.m (44 in. lbs.).
  3. Align the height sensor link with the ball stud (3) on the upper control arm (4). Press the link socket over the ball stud until it snaps into position.
  4. Connect the wire harness connector to the height sensor.
  5. Remove the supports and lower the vehicle.
  6. Perform the Curb Height Measurement to get values for input to the scan tool in the next step. Refer to CURB HEIGHT MEASUREMENT .
    NOTE:

    Make sure the scan tool preferences are set to metric. When writing the measured values to the Air Suspension Control Module (ASCM) they will need to be in millimeters.

  7. With a scan tool, using the routines under the ASCM, perform the following:
    • Perform the Curb Height Measurement and record the values for input to the scan tool. Refer to CURB HEIGHT MEASUREMENT .
    • Perform the Write Suspension Height Values routine and input measurements recorded as prompted by scan tool.
    • Command the vehicle to Normal Ride Height (NRH) again.
    • Perform the Curb Height Measurement again and verify specifications. Refer to CURB HEIGHT MEASUREMENT .
    • Run the Air Mass Calculation routine on the air suspension system.
    • If necessary, add to the system or deflate to atmosphere using the ASCM routines, then repeat the Air Mass Calculation routine again until the system responds with Air Mass OK (188 to 216 bar-liters).
    • Run the Height Sensor Check routine on the air suspension system.
    • Enable the air suspension system.
  8. Perform the ASCM VERIFICATION TEST. Refer to ASCM VERIFICATION TEST .
scientia non olet · About LEMON Manuals