Electric Vacuum Pump System Indicator Does Not Go Off, and No DTCs Are Stored

Electric vacuum pump system indicator does not go off, and no DTCs are stored

Diagnostic Procedure:

1. Press the brake pedal several times.

2. Start the engine.

3. Check the F-CAN lines between the PCM and the gauge control module, and troubleshoot the gauge control module DTC. Diagnostic Aids

4. Check for fuel and emission systems DTCs with the HDS, and troubleshoot the system. Initial Inspection and Diagnostic Overview

5. Update the PCM PCM Update or substitute a known-good PCM, Initial Inspection and Diagnostic Overview then recheck. If the system is OK with the substituted PCM, replace the original PCM. Service and Repair