Precautions for Removing Battery Terminal
When disconnecting the battery terminal, pay attention to the following.
- Always use a 12 V battery as power source.
- Never disconnect battery terminal while engine is running.
- When removing the 12 V battery terminal, turn OFF the ignition switch and wait at least 30 seconds.
- For vehicles with the engine listed below, remove the battery terminal after a lapse of the specified time:
BR08DE
: 4 minutes
YD25DDTi
: 2 minutes
D4D engine
: 20 minutes
YS23DDT
: 4 minutes
HRA2DDT
: 12 minutes
YS23DDTT
: 4 minutes
K9K engine
: 4 minutes
ZD30DDTi
: 60 seconds
M9R engine
: 4 minutes
ZD30DDTT
: 60 seconds
R9M engine
: 4 minutes
V9X engine
: 4 minutes
NOTE: ECU may be active for several tens of seconds after the ignition switch is turned OFF. If the battery terminal is removed before ECU stops, then a DTC detection error or ECU data corruption may occur. - After high-load driving, if the vehicle is equipped with the V9X engine, turn the ignition switch OFF and wait for at least 15 minutes to remove the battery terminal.NOTE:
- Turbocharger cooling pump may operate in a few minutes after the ignition switch is turned OFF.
- Example of high-load driving
- Driving for 30 minutes or more at 140 km/h (86 MPH) or more.
- Driving for 30 minutes or more on a steep slope.
- For vehicles with two batteries, be sure to connect the main battery and the sub-battery before turning ON the ignition switch.NOTE: If the ignition switch is turned ON with any one of the terminals of main battery and sub-battery disconnected, then DTC may be detected.
- After installing the 12 V battery, always check "Self Diagnosis Result" of all ECUs and erase DTC.NOTE: The removal of 12 V battery may cause a DTC detection error.