Caution / Notice / Hint
WARNING: This page is about a different car, the 2025 Toyota Corolla Cross, 2024 Toyota Corolla Cross, and 2023 Toyota Corolla Cross. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
If this vehicle is jump started, etc. and excessive voltage is applied to the auxiliary battery, the inverter water pump assembly may suspend control as a self-protection function and store DTCs.
(When the auxiliary battery voltage returns to normal, the inverter water pump assembly will resume normal operation. In this case it is not necessary to replace the inverter water pump assembly.)
HINT:
P0C73-96 may be output as a result of the malfunction indicated by the DTCs in table below.
- The chart above is listed in inspection order of priority.
- Check DTCs that are output at the same time by following the listed order. (The main cause of the malfunction can be determined without performing unnecessary inspections.)
| Malfunction Content | Relevant DTC | |
|---|---|---|
| Microcomputer malfunction | P0606-47 | Hybrid/EV Powertrain Control Module Processor Watchdog / Safety MCU Failure |
| P0688-1F | ECM/PCM Power Relay Sense Circuit Intermittent | |
| Sensor and actuator circuit malfunction | P314A-31 | Motor Electronics Coolant Pump "A" No Signal |