Caution / Notice / Hint
WARNING:
- Before the following operations are conducted, take precautions to prevent electric shock by turning the power switch off, wearing insulated gloves, and removing the service plug grips from both FC stack assembly and EV battery.
- Inspecting the high-voltage system
- Disconnecting the low voltage connector of the inverter with converter assembly
- Disconnecting the low voltage connector of the EV battery
- Disconnecting the low voltage connector of the FC stack assembly
- Disconnecting the low voltage connector of the FC converter assembly
HINT:
No removal order is specified for the service plug grips of the FC stack assembly and EV battery.
- After removing the service plug grip from the EV battery, put it in your pocket to prevent other technicians from accidentally reconnecting it while you are working on the high-voltage system. After removing the service grip from the FC stack assembly, store it in a safe location and use the "HIGH-VOLTAGE, DO NOT TOUCH" sign to notify other technicians that you are working on the high-voltage system.
- After removal of the service plug grips of both FC stack assembly and EV battery, wait for at least 10 minutes before touching the high-voltage connectors and terminals. After waiting for 10 minutes, check the voltage at the terminals in the inspection point in the inverter with converter assembly. The voltage should be 0 V before beginning work.
Refer to PRECAUTION [06/2015 - ]
*a Without waiting for 10 minutes HINT:
At least 10 minutes are necessary to discharge the high-voltage capacitors inside the inverter with converter assembly and FC stack assembly.
NOTE:
- After turning the power switch off, waiting time may be required before disconnecting the cable from the negative (-) auxiliary battery terminal. Therefore, make sure to read the disconnecting the cable from the negative (-) auxiliary battery terminal notices before proceeding with work.
Refer to PRECAUTION [06/2015 - ]
- When reinstalling the service plug grip to the FC stack assembly or the EV battery, slide the lever of the service plug until the letters "UNLOCK" are completely hidden, and insert it firmly.
Refer to PRECAUTION [06/2015 - ]
- When the vehicle is parked with the power switch off, if the FC control ECU judges that the FC stack temperature will go below 0°C (32°F), it activates the FC air compressor, hydrogen pump and FC cooling water pump for a maximum of 180 seconds and drains water from the FC stack assembly. When performing inspection or repairs with the power switch off (not on (IG) or on (READY)), disconnect the cable from the negative (-) auxiliary battery terminal before performing work (If the auxiliary battery voltage is needed to conduct inspection, warm up the FC system beforehand).
HINT:
- If DTC P0A1B-168 is output, clear the DTCs, perform the following procedure, and check that the same DTC is not output after the repair.
- Turn the power switch on (READY).
- Drive the vehicle at 5 km/h (3 mph) or more for 5 seconds or more.
- If DTC P0A1B-795 or P0A1B-796 is output, clear the DTCs, perform the following procedure, and check that the same DTC is not output after the repair.
- Turn the power switch on (IG) and wait for 5 seconds or more.
- When a resolver signal malfunction exists, the vehicle may not drive smoothly.