Circuit/System Verification
- Vehicle ON.NOTE: DTC P0AC4 is an informational DTC indicating a DTC is set in the hybrid/EV powertrain control module 1; do not replace the ECM for this DTC.
- Verify DTC P0AC4 is not set.
- If the DTC is set
Refer to Diagnostic Trouble Code (DTC) List - Vehicle for diagnosis of hybrid/EV powertrain control module 1 DTCs.
- If the DTC is not set
- If the DTC is set
- All OK.