Maintenance mode transition tool for Toyota Prius
You can switch to 2WD maintenance mode by plugging this unit into the DLC connector of aToyota hybrid vehicle* .
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What is maintenance mode?
In hybrid vehicles, if the engine is warm and the HV battery is well charged, the engine will automatically stop while the vehicle is stopped.
For this reason, it is necessary to shift to 2WD maintenance mode (MAINTENANCE MODE) when continuous engine operation is required even when the vehicle is stopped, such as when checking the ignition timing, adjusting the engine, or measuring and inspecting the exhaust gas during vehicle inspection. ..
Since TRC (traction control; tire slip prevention device) is adopted, when rotating only the front wheels with a speedometer tester etc., it is necessary to shift to the 2WD maintenance mode that deactivates the TRC device.
Main purpose of use
| Maintenance mode | Main purpose of use | Vehicle side control content |
|---|---|---|
| 2WD maintenance mode | ● Engine adjustment such as ignition timing adjustment ● Idle CO / HC inspection at vehicle inspection ● Speedometer-tester, two-wheel chassis dynamometer, etc. test | ● Forced engine idling at shift P position ● Release of TRC device operation ● Rear motor control shutdown (2WD driving) |
| 4WD maintenance mode* | ● Engine adjustment such as ignition timing adjustment ● Idle CO / HC inspection at vehicle inspection ● Speedometer-tester, 4-wheel chassis dynamometer, etc. test | ● Forced engine idling during shift P position ● Release of TRC device operation |
* This tool cannot be used to switch to 4WD maintenance mode.
In the car inspection
・ Idle inspection at the time of vehicle inspection Exhaust gas measurement (CO / HC inspection)
・ Speedometer tester, brake tester, etc.
Important: For some 4WD vehicles, the maintenance mode is returned to the normal state of OFF during the brake braking force test. You will need it.
In general maintenance
・ Engine adjustment such as ignition timing check ・ When
changing cooling water, engine oil, etc.
・ Checking and checking the engine without stopping the engine
Operating procedure
(1) Attach the tool to the DLC (vehicle side connector).
② Press the power switch twice.(IG-ON)
③ Shift to 2WD maintenance mode (MAIN TENANCE MODE).
Depending on the vehicle, the hybrid system warning light in the display lights up or blinks.
"2WD maintenance mode" and "MAINTENANCE MODE" are displayed on the meter display.
④ Turn on the power switch while depressing the brake pedal.
The "READY" lamp lights up and the engine runs continuously.
(5) To release the 2WD maintenance mode (MAIN TENANCE MODE), set the power switch to OFF (IG-OFF).
* Even if the tool is removed from the connector, it will not be released.
[Important] If you drive on the road in maintenance mode, the trans-axle may be damaged.
specification
| Operating temperature / humidity | -10 to 55 ° C, 90% rh or less (however, no condensation) |
|---|---|
| Operating power supply voltage | DC8-32V (supplied from the vehicle) |
| Size | 137mm (W) x 48mm (L) x 32mm (H) |
| mass | About 65g |
Safety Precautions
- If you drive on the road in maintenance mode, the transaxle may be damaged.
- To cancel the maintenance mode, turn off the ignition.
Even if the tool is removed from the connector while the ignition is ON, it will not be released. - For some 4WD vehicles, it is necessary to return the maintenance mode to the normal state of OFF when testing the braking force.
- Even if the diagnostic code is recognized during the transition to maintenance mode, the master warning will light up, but the warning light on the multi-center display will not be displayed abnormally.Please cancel the maintenance mode and carry out the inspection.
- This tool does not shift to 4WD maintenance mode.
| Installation Services Available | No |
|---|---|
| Hybridpit Availability | Available to order |
| Parts | Electronics |
| Car Make | Toyota |