Safety Warning

DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.

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HOMESERVICE MANUALSJEEP2024GRAND CHEROKEE L LIMITED, RWDREPAIR AND DIAGNOSISSUSPENSIONSUSPENSION CONTROL SYSTEMSAIR SUSPENSION CONTROL MODULE (ASCM) - DTCS C008E-00 TO C1522-37DTC TROUBLESHOOTINGC151E-2A-LEFT FRONT RIDE HEIGHT SENSOR-STUCKDIAGNOSTIC TEST

2024 Jeep Grand Cherokee L Limited, RWD

Diagnostic Test

2024 Jeep Grand Cherokee L Limited, RWDSECTION Diagnostic Test

READ AND RECORD DTCS AND ENVIRONMENTAL DATA - ERASE DTCS AND CHECK FOR DTC TO RETURN
1. With the scan tool, read DTCs in all Electronic Control Units (ECUs) and record on the repair order.
2. For future reference, with the scan tool, run and save a vehicle Scan Report and all related recorded data.
3. With the scan tool, erase all DTCs.
4. Turn the ignition off for a minimum of 10.0 seconds.
5. Turn the ignition on.
6. Using the When Monitored and Set Conditions above and recorded data, operate the vehicle in the conditions that set the DTC.
7. With the scan tool, read DTCs.
  Did the DTC return?
  
  Yes
  - Go To 2
  No
  - Perform the ASCM INTERMITTENT CONDITION diagnostic procedure. Refer to STANDARD PROCEDURE ASCM INTERMITTENT CONDITION , followed by the ASCM VERIFICATION TEST. Refer to STANDARD PROCEDURE - ASCM VERIFICATION TEST .
  - If DTC DOES NOT return after VERIFICATION TEST, Test Complete. Condition that caused DTC has cleared.
  - If DTC DOES return after VERIFICATION TEST, Go to 2
DISCONNECT HEIGHT SENSOR LINKAGE AND MANUALLY MOVE SENSOR UP/DOWN
1. At the corner that is associated with this DTC, disconnect Ride Height Sensor from Linkage.
2. With the Scan Tool, Use the "Component Air Mass/Pressure/Ride Height Readings" to record Air Spring ride height values
3. With the Height Sensor disconnected from linkage, adjust Ride Height Sensor arm up or down.
4. With the Scan Tool, monitor Ride Height values using "Component Air Mass/Pressure/Ride Height Readings"
  Did manually adjusting Ride Height Sensor update the Scan Tool values for that Sensor?
  
  Yes
  - Go to 3
  No
  - Go to 6
CHECK THE LEFT FRONT RIDE HEIGHT SENSOR LINKAGE FOR DAMAGE, LOOSE, OR DISCONNECTED CONNECTION TO HEIGHT SENSOR OR FRAME
1. Turn the ignition off to the lock position.
2. Check the Left Front Ride Height Sensor Linkage for:
  - Damaged Linkage
  - Loose Mounting of Linkage and Sensor
  - Disconnected Linkage
  - Obstruction of Sensor travel
3. If any issues were found:
  - Correct the issue
  - Cycle the Ignition
  - Drive the Vehicle above 25 mph (40 kph) for at least one minute
4. With the scan tool, read DTCs.
  Did the DTC return?
  
  Yes
  - Go to 4
  No
  - Repair Complete.
  - Perform the ASCM VERIFICATION TEST. Refer to STANDARD PROCEDURE - ASCM VERIFICATION TEST .
MONITOR RIDE HEIGHT VALUES VIA THE SCAN TOOL WHILE RAISING AND LOWERING VEHICLE
1. Place the ASCM in "OFF-ROAD 2" via the In-Cab level switch.
2. With the Scan Tool, Use the "Component Air Mass/Pressure/Ride Height Readings" to record Air Spring ride height values
3. Place the ASCM in "NORMAL" via the In-Cab level switch.
4. With the Scan Tool, Use the "Component Air Mass/Pressure/Ride Height Readings" to record Air Spring ride height values
  Did the values change going from "OFFROAD 2" to "NORMAL" for the individual sensor?
  
  No
  - Go to 6
  Yes
  - Go to 5
SWITCH IGNITION OFF FOR 10 MINUTES AND CHECK FOR DTC
1. Turn the ignition off for a minimum of 10 minutes.
2. Turn the ignition on.
3. Drive the Vehicle above 25 mph (40 kph) for at least one minute.
4. With the scan tool, read DTCs.
  Is the DTC still Active?
  
  No
  - Condition that caused DTC has cleared
  - Perform the ASCM VERIFICATION TEST. Refer to STANDARD PROCEDURE - ASCM VERIFICATION TEST .
  Yes
  - Go to 6
REPLACE THE LEFT FRONT RIDE HEIGHT SENSOR
1. Replace the Left Front Ride Height Sensor in accordance with the Service Information. Refer to HEIGHT SENSOR - FRONT .
2. With the scan tool, erase the DTCs in the ASCM.
3. Drive the Vehicle above 25 mph (40 kph) for at least one minute.
4. With the scan tool, read the DTCs in the ASCM.
  Does the DTC remain active after replacing the Sensor?
  
  Yes
  - Replace the Air Suspension Control Module (ASCM) in accordance with the Service Information. Refer to MODULE, AIR SUSPENSION CONTROL (ASCM), REMOVAL AND INSTALLATION .
  - Perform the ASCM VERIFICATION TEST. Refer to STANDARD PROCEDURE - ASCM VERIFICATION TEST .
  No
  - Test complete, the condition or conditions that originally set this DTC are not present at this time.

RENDER: 1.0x

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

• You smell fuel, burning insulation, or see smoke.
• Brakes feel soft, pull hard to one side, or make grinding noises.
• The engine overheats, stalls repeatedly, or misfires under load.
• You are missing required tools, torque specs, or safe lifting equipment.
• You are not confident in the next step or safety outcome.