- Joined
- Jun 25, 2021
- Threads
- 2
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- 883
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- 1,379
- Location
- Los Angeles CA
- Vehicle(s)
- Nissan Frontier PRO-4X Lux FFV
- Engine
- Undecided
I think you could try key-on-engine-off and not have power steering or power brakes. But it's been a while since I worked on a Toyota hybrid and I'm not certain that the Maverick hybrid follows the same logic.If I wanted to test, engine off steering and brakes on my hybrid. How would I go about doing this?
I don't want questions later on like, 'Why didn't you do it this way?'
You could also try shifting to neutral then turning the car "off" or as off as it's willing to go. It may shift to park automatically.
This is really pushing my rusty knowledge of Toyota hybrid systems and I'm not certain it's the same way on the Maverick but from what I recall, in bypass mode (AKA, regular driving), the braking system flow goes your foot on brake pedal > stroke simulator > brake management system > hydraulic pressure and/or regenerative braking.Good to know. I'm curious how that works with an electrically actuated master cylinder. Do they have a secondary hidden somewhere?
In failsafe (normal) mode, it goes your foot > master cylinder > hydraulic pressure. This is possible because the system is "normally" in failsafe mode and requires electrical power to be in "bypass" mode and use the stroke simulator. If electrical power is lost (such as when the vehicle is powered off), a solenoid mechanically closes and puts the braking system into failsafe/normal mode.
This is also why (at least Toyota) hybrids cannot have their hydraulic braking systems bled by conventional means (such as pumping the brake pedal or gravity bleeding). Pumping the brakes won't do anything in bypass mode and even in failsafe mode, it will only generate pressure on the front brakes.
Hence why you need to use a scan tool with bidrectional communication and brake bleed functionality (or the backyard way of getting the vehicle in maintenance mode by jumping pins on the OBD and following a sequence of key-on-key-off steps). The scan tool just commands the braking system to pump fluid out. Makes it literally a one person job, which is nice.
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