P1586
DTC P1586 (23): MPI Module Current Signal/Battery Current Signal Circuit Problem1. Reset the MCM.
2. Turn the ignition switch ON (II).
Is DTC P1629 indicated?
YES-Do the troubleshooting for DTC P1629, and recheck.
NO-Go to step 3.
3. Check the DTC.
Is DTC P1587, P1588, or P1589 indicated?
YES-Do the troubleshooting for DTC P1587, P1588, or P1589, and recheck.
NO-Go to step 4.
4. Check the DTC.
Is DTC P1580 or P1588 indicated?
YES-Do the troubleshooting for DTC P1580 or P1589, and recheck.
NO-Go to step 5.
5. Reset the MCM.
6. Start the engine. Raise it to 3,500 - 4,000 rpm without load (in Park or neutral) unit the IMA battery level gauge indicates above 2/3.
7. Accelerate using wide open throttle from 12 - 25 mph (20 - 40 km/h) in 3rd gear (CVT in D), then decelerate using fully closed throttle to 12 mph (12 km/h).
Is DTC P1586 indicated?
YES-Go to step 8.
NO-Intermittent failure, system is OK at this time. Check for poor connections or loose terminals at the MPI module current sensor/battery current module sensor and the MCM.
8. Turn the ignition switch OFF.
9. Turn the battery module switch OFF.
10. Remove the IPU lid.
11. Disconnect MCM connector B (24P).
12. Check for continuity between MCM connector terminal B7 and body ground.
Is there continuity?
YES-Go to step 13.
NO-Go to step 15.
13. Disconnect the junction board 3P connector.
14. Check for continuity between MCM connector terminal B7 and body ground.
Is there continuity?
YES-Repair short in the wire between the battery current module sensor and the MCM (B7).
NO-Replace the battery module.
15. Check for continuity between MCM connector terminal B7 and junction board 3P connector terminal No. 2.
Is there continuity?
YES-Go to step 16.
NO-Repair open in the wire between the battery current module sensor and the MCM (B7).
16. Substitute a known-good MPI module current sensor, then recheck.
Does the symptom/indication go away with a known-good MPI module current sensor?
YES-Replace the original MPI module current sensor.
NO-Go to step 17.
17. Update the MCM if it does not have the latest software, or substitute a known-good MCM, then recheck.
Does the symptom/indication go away with an updated or a known-good MCM?
YES-If the MCM was updated, troubleshooting is complete. If a known-good MCM was substituted, replace the original MCM.
NO-Go to step 18.
18. Substitute a known-good DC-DC converter, then recheck.
Does the symptom/indication go away with a known-good DC-DC converter?
YES-Replace the original DC-DC converter.
NO-Replace the battery module.