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) - INTERMITTENT CONDITION, PRE-DIAGNOSTIC PROCEDURE AND VERIFICATION TESTSTANDARD PROCEDURESTANDARD PROCEDURE - ASCM VERIFICATION TESTASCM VERIFICATION TEST
2024 Jeep Grand Cherokee L Limited, RWD
ASCM Verification Test
2024 Jeep Grand Cherokee L Limited, RWDSECTION ASCM Verification Test
PERFORM THE ASCM VERIFICATION TEST
- Turn the ignition off.
- Disconnect all jumper wires and reconnect all previously disconnected components and connectors.
- Turn the ignition on.
- With the scan tool, erase DTCs.
- Make sure that all accessories are turned off and that the battery is fully charged.
- Using In-Vehicle Suspension Switch, set the vehicle in "OFF-ROAD (2)" to test for proper system operation.NOTE:
Door and Hood ajar will prevent the ASCM from adjusting.
- If no issues found going into "OFF-ROAD (2)", Place vehicle into" via Air Suspension Switch.
- If no issues found going into "ENTRY/EXIT", Place vehicle back into "NORMAL" via Air Suspension Switch.
- Test drive the vehicle (up to highway speeds) and verify proper operation.
- With the scan tool, read the ASCM DTCs.
Are there any ACTIVE DTCs present in the Air Suspension Control Module (ASCM)?
Yes
- Refer to DIAGNOSTIC CODE INDEX and perform the appropriate diagnostic procedure.
No
- Repair is complete.
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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.