Auto Idle Stop System Troubleshooting
Auto Idle Stop System Troubleshooting
1. Do the auto idle stop system inspection Auto Idle Stop System Inspection.
Is auto idle stop working?
YES -
The system is OK at this time. If needed, refer to the auto idle stop conditions.
NO -
Go to step 2.
2. Check the auto idle stop conditions.
3. Test-drive under these conditions:
- Drive the vehicle at 25 mph (40 km/h), then stop it within 5-15 seconds.
- Press and hold the brake pedal until the vehicle stops (do not pump the brake pedal).
- Keep the brake pedal pressed after the vehicle stops.
Is auto idle stop working?
YES -
The system is OK at this time.
NO -
Go to step 4.
4. Start the engine, and watch the instrument panel.
Do any indicators come on or blink?
YES -
Do the troubleshooting for the system related to the indicator that comes on or blinks.
NO -
Go to step 5.
5. Turn the ignition switch to LOCK (0).
6. Turn the ignition switch to ON (II).
7. Do the All Systems DTC check with the HDS.
Are any Pending or Confirmed DTCs indicated?
YES -
Go to the indicated DTC's troubleshooting.
NO -
Go to step 8.
8. Check the BRAKE SWITCH in the PGM-FI SYSTEM DATA LIST with the HDS.
Does it indicate ON when the brake pedal is pressed and OFF when the brake pedal is released?
YES -
Go to step 9.
NO -
Do the brake pedal position switch test.
9. Do the brake booster vacuum leak test.
Is the brake booster vacuum OK?
YES -
Go to step 10.
NO -
Replace any leaking part(s) as needed.
10. Turn the ignition switch to ON (II).
11. Press the brake pedal several times.
12. Start the engine.
13. Check the BRAKE BOOSTER PRESSURE SENSOR A and BRAKE BOOSTER PRESSURE SENSOR B in the EVPS DATA LIST with the HDS.
Does the brake booster pressure change from air pressure to a vacuum?
YES -
Go to step 14.
NO -
Check for an obstruction at the brake booster pressure sensor vacuum line.
14. Turn the ignition switch to LOCK (0).
15. Turn the ignition switch to ON (II).
16. Move the shift lever to N from R, and to N from D.
When the shift lever is in N, does the N indicator come on?
YES -
Go to step 17.
NO -
- Check the F-CAN communication line for a DTC.
- Check the A/T gear position indicator drive circuit.
- Adjust the shift cable.
- Inspect the transmission range switch Testing and Inspection.
17. Check the START CLUTCH FEEDBACK LEARN in the A/T DATA LIST with the HDS.
Is the start clutch feedback learn completed?
YES -
Go to step 18.
NO -
Do the start clutch pressure control calibration Testing and Inspection.
18. Turn the ignition switch to LOCK (0).
19. Turn the ignition switch to ON (II), and change the multi-information display to the Eco guide screen.
Is the outside temperature reading (A) accurate?
YES -
The system is OK at this time.
NO -
- If outside air temperature is not indicated, substitute a known-good climate control unit Climate Control Unit Removal/Installation, and recheck. If the auto idle stop system is OK, replace the original climate control unit.
- If the reading of the outside temperature is not accurate, check the outside air temperature sensor.