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.

2024 Jeep Wagoneer L Series II, RWDFACTORY OEM SERVICE PROCEDURE

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 (ECU's) and record on the repair order.
2. With the scan tool, run a vehicle Scan Report, or record the Environmental Data related to the DTCs.
3. With the scan tool, erase all DTCs.
4. Turn the ignition off for a minimum of 10 seconds.
5. Turn the ignition on.
6. Using the recorded Environmental Data and the When Monitored Conditions, 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 appropriate TESTING FOR AN INTERMITTENT CONDITION diagnostic procedure. Refer to: TESTING FOR AN INTERMITTENT CONDITION .
CHECK FOR APPLICABLE SOFTWARE UPDATES AND SERVICE BULLETINS
1. With a scan tool, check all electronic control modules for software updates that are related to the customer concern.
2. Check for service bulletins that are related to the customer concern.
  Were any software updates or service bulletins applicable to the customer concern?
  
  Yes
  - Perform the service procedure as necessary.
  - Perform the Night Vision Processing Module (NVPM) Verification Test. Refer to: VERIFICATION TEST NIGHT VISION PROCESSING MODULE (NVPM) .
  No
  - Go To 3
CHECK RELATED HARNESS CONNECTIONS - ERASE DTCS AND CHECK FOR DTC TO RETURN
1. Turn the ignition off.
2. Disconnect all NVPM harness connectors.
3. Disconnect all related in-line harness connections (if equipped).
4. Disconnect the related component harness connectors.
5. Inspect harness connectors, component connectors, and all male and female terminals for the following conditions:
  - Proper connector installation.
  - Damaged connector locks.
  - Corrosion.
  - Other signs of water intrusion.
  - Weather seal damage (if equipped).
  - Bent terminals.
  - Overheating due to a poor connection (terminal may be discolored due to excessive current draw).
  - Terminals that have been pushed back into the connector cavity.
  - Perform a terminal drag test on each connector terminal to verify proper terminal tension.
  Repair any conditions that are found.
6. Reconnect all NVPM harness connectors. Be certain that all harness connectors are fully seated and the connector locks are fully engaged.
7. Reconnect all in-line harness connectors (if equipped). Be certain that all connectors are fully seated and the connector locks are fully engaged.
8. Reconnect all related component harness connectors. Be certain that all connectors are fully seated and the connector locks are fully engaged.
9. With the scan tool, erase DTCs.
10. Using the recorded Environmental Data, along with the When Monitored and Set Conditions above, operate the vehicle in the conditions that set the DTC.
11. With the scan tool, read NVPM DTCs.
  Did the DTC return?
  
  Yes
  - Replace the Night Vision Processing Module (NVPM) in accordance with the Service Information.
  - Perform the Night Vision Processing Module (NVPM) Verification Test. Refer to: VERIFICATION TEST NIGHT VISION PROCESSING MODULE (NVPM) .
  No
  - Repairing the wiring or connectors corrected the condition.
  - Perform the Night Vision Processing Module (NVPM) Verification Test. Refer to: VERIFICATION TEST NIGHT VISION PROCESSING MODULE (NVPM) .

Factory Service Tools

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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.

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