Section 30 (5.7L - DTCS P0633 To P0688)
WARNING: This page is about a different car, the 2024 Jeep Grand Cherokee L. However, it is still accessible from the selected car via links, so may be relevant.
- DTC Troubleshooting
- P0633-Skim Secret Key Not Stored In Pcm
- P063A-Generator Voltage Sense Circuit
- P0642-Sensor Reference Voltage 1 Circuit Low
- P0643-Sensor Reference Voltage 1 Circuit High
- P0645-A/C Control Circuit/Open
- P064A-Fuel Pump Control Module 1
- Known Issues - FPCM System
- FPCM System Operation
- Functional Description- Fuel Pump Control Module (FPCM) And Fuel Pump
- Functional Description - Powertrain Control Module (Pcm)
- Technical Data-Fuel System Pressure Specifications
- When Monitored
- Set Condition
- Default Action
- Possible Causes
- Diagnostic Overview-Fuel Pump Control Module
- Preliminary Diagnostic Checks
- Check For An Active Or Intermittent Condition
- Diagnostic Test - Fuel Pump Control Performance Faults (P025B, P027B, P062A, P064A, P26EA)
- Powertrain Verification Test
- P0652-Sensor Reference Voltage 2 Low
- P0653-Sensor Reference Voltage 2 High
- P0685-Auto Shutdown Relay Control Circuit
- P0688-Auto Shutdown Relay Sense Circuit Low