DTC P1586 (23): Motor Power Inverter (MPI) Module Current Signal/Battery Current Signal Circuit Problem
- Reset the MCM (see HOW TO RESET THE MCM ).
- Turn the ignition switch ON (II) and check for DTCs.
Is DTC P1580 (65) or P1635 (79) indicated?
- YES - Do the troubleshooting for P1580 (65) (see DTC P1580 (65): BATTERY CURRENT CIRCUIT PROBLEM ) or the DTC for P1635 (79) (see DTC P1635 (79): BATTERY CONDITION MONITOR (BCM) MODULE PROBLEM ), and recheck.
- NO - Go to step 3.
- Remove the No. 15 EPS (40 A) fuse from the under-hood fuse/relay box.
- Start the engine, and hold it between 3,500 RPM and 4,000 RPM without load (in Park or neutral) until the BAT displays at least three segments.
- Reinstall the No. 15 EPS (40 A) fuse.
- Accelerate using wide open throttle from 12-25 mph (20-40 km/h) in 3rd gear, and decelerate with a fully closed throttle to 12 mph (20 km/h).
- Check for DTCs.
Is DTC P1586 (23) indicated?
- YES - Substitute a known-good BCM module and battery module, then recheck. If the symptom/ indication goes away, replace the original BCM module and the battery module (see BATTERY MODULE REMOVAL/INSTALLATION ).
- NO - Intermittent failure, system is OK at this time. Check for poor connections or loose wires at the MPI module current sensor/battery current sensor and at the MCM.