Auto Idle Stop System Troubleshooting
- Do the auto idle stop system inspection (see 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 (see AUTO IDLE STOP CONDITIONS ).
NO -go to step 2.
- Check the auto idle stop conditions (see AUTO IDLE STOP CONDITIONS ).
- 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.
- 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.
- Turn the ignition switch to LOCK (0).
- Turn the ignition switch to ON (II).
- 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.
- 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 (see BRAKE PEDAL POSITION SWITCH TEST ).
- Do the brake booster vacuum leak test (see
BRAKE BOOSTER TEST
).
Is the brake booster vacuum OK?
YES -go to step 10.
NO -Replace any leaking part(s) as needed.
- Turn the ignition switch to ON (II).
- Press the brake pedal several times.
- Start the engine.
- 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.
- Turn the ignition switch to LOCK (0).
- Turn the ignition switch to ON (II).
- 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 (see DTC B1169: GAUGE CONTROL MODULE LOST COMMUNICATION WITH THE PCM (A/T MESSAGE) ).
- Check the A/T gear position indicator drive circuit (see THE INDICATOR DRIVE CIRCUIT CHECK ).
- Adjust the shift cable (see SHIFT CABLE ADJUSTMENT ).
- Inspect the transmission range switch (see TRANSMISSION RANGE SWITCH TEST ).
- 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 (see START CLUTCH PRESSURE CONTROL CALIBRATION PROCEDURES ). B
- Turn the ignition switch to LOCK (0).
- Turn the ignition switch to ON (II), and change the multi-information display (MID) to the ECO 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 (see 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 (see HUMIDITY/IN-CAR TEMPERATURE SENSOR REPLACEMENT ).