Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Idle Stop Time Is Short
2020 Honda Pilot LX, FWDSECTION Idle Stop Time Is Short
Diagnostic procedure
- 1. Brake booster leaks: Check the leakage from the following parts, Brake Booster Test
and replace it if necessary.
NOTE:
-
- Time that the idling stop operates shortens because it becomes impossible to maintain airtight of the negative pressure line when a small leakage is in the following parts.
- The following symptoms appear when there is a leakage in following parts. (Small leakage: Idle stop time is short) (Large leakage: Idle stop does not operate)
-
- Check valve (built into the vacuum line)
- Vacuum hose, pipe
- Vacuum tube (between the brake booster and the brake booster pressure sensor)
- Brake booster
- Rod seal or O-ring, or secondary cup of master cylinder
- Brake booster pressure sensor
- 2. If equipped, Check the cold storage evaporator installation - Go to: Evaporator Core - Removal and Installation (1234yf) .
- 3. Troubleshoot the auto idle stop system - Go to: Auto Idle Stop System Symptom Troubleshooting - Auto idle stop system does not operate .
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.