Auto Idle Stop System
When the vehicle has one of these symptoms, do the diagnostic procedure for the symptom, until you find the cause.
| Symptom |
Diagnostic procedure |
Also check for |
| Auto idle stop system does not operate |
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| Auto idle stop system indicator (amber) blinks |
Troubleshoot the auto idle stop system. - Refer to:
Auto Idle Stop System - Auto Idle Stop System Indicator (AMBER) Blinks . |
|
| Auto idle stop system indicator (green/amber) does not come on |
Troubleshoot the auto idle stop system. - Refer to:
Auto Idle Stop System - Auto Idle Stop System Indicator (GREEN/AMBER) Does Not Come On . |
|
| Idle stop time is short |
- 1. Brake booster leaks:
Check the leakage from the following parts, Brake Booster Test
and replace it if necessary.
NOTE:
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- 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 .
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