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.
2008 Jeep Commander 4WD V6-3.7LFACTORY OEM SERVICE PROCEDURE
Initial Inspection and Diagnostic Overview
APS-INTERMITTENT CONDITION TEST
For a complete wiring diagram Consult Diagrams/Electrical.
Diagnostic Test
NOTE: The conditions that set the DTC are not present at this time. The following list may help in identifying the intermittent condition.
WARNING: When the engine is operating, do not stand in direct line with the fan. Do not put your hands near the pulleys, belts, or fan. Do not wear loose clothing. Failure to follow these instructions can result in personal injury or death.
Search for any Technical Service Bulletins (TSBs) that may apply.
Review the scan tool information. If possible, try to duplicate the conditions under which the DTC set.
Turn the ignition off.
Visually inspect the related wire harness. Disconnect all the related harness connectors. Look for any chafed, pierced, pinched, partially broken wires and broken, bent, pushed out, or corroded terminals.
Wiggle the wires while checking for shorts and open circuits.
Perform a voltage drop test on the related circuits between the suspected faulty component and the Memory Seat Module.
Inspect and clean all grounds that are related to the most current DTC.
If numerous trouble codes were set, use a wiring schematic and look for any common ground or supply circuits
Monitor with the scan tool and wiggle the related wire harness to try to interrupt the actuation.
Use the scan tool to perform a System Test if one applies to failing component.
A co-pilot, data recorder, and/or lab scope should be used to help diagnose intermittent conditions.
Were any problems found during the above inspections?
Yes
- Perform the necessary repairs.
- Perform ABS VERIFICATION TEST. ABS Verification Test.
No
- Test Complete.
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- β’ You smell fuel, burning insulation, or see smoke.
- β’ Brakes feel soft, pull hard to one side, or make grinding noises.
- β’ The engine overheats, stalls repeatedly, or misfires under load.
- β’ You are missing required tools, torque specs, or safe lifting equipment.
- β’ You are not confident in the next step or safety outcome.
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