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- Confirm the vehicle status or the ambient conditions to check whether the
auto stop should be carried out or not (Refer to ).
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Q.
Are the conditions for prohibiting the auto stop satisfied?
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- Check the data lists of the engine-ECU (Refer to GROUP 13D - Troubleshooting - Data
List Reference Table ).
- Item 435: Last battery deteriorated odometer
- Item 436: 2nd last battery deteriorated odometer
- Item 437: 3rd last battery deteriorated odometer
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OK: 0 km (Ignition switch: ON)
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Q.
Are the all items displayed as "0 km"?
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Write the check result and go to Step 3.
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Confirm the diagnosis code is set from the following ECU.
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- AS&G-ECU
- Engine-ECU
- ASC-ECU
- Combination meter
- EPS-ECU
- A/C-ECU
- ETACS-ECU
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Q.
Is the diagnosis code set?
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YES <Diagnosis code is set from the AS&G-ECU> : Perform the troubleshooting of the AS&G-ECU (Refer to ).
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YES <Diagnosis code is set from the engine-ECU> : Perform the troubleshooting of the engine-ECU (Refer to GROUP 13D - Troubleshooting - Inspection
Chart for Diagnosis Code ).
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YES <Diagnosis code is set from the ASC-ECU> : Perform the troubleshooting of the ASC-ECU (Refer to GROUP 35C - Troubleshooting - Diagnosis
Code Chart ).
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YES <Diagnosis code is set from the combination meter> : Perform the troubleshooting of the combination meter (Refer to GROUP 54A - Combination
Meter - Diagnosis Code Chart ).
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YES <Diagnosis code is set from the EPS-ECU> : Perform the troubleshooting of the EPS-ECU (Refer to GROUP 37 - Troubleshooting - Diagnosis
Code Chart ).
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YES <Diagnosis code is set from the A/C-ECU> : Perform the troubleshooting of the A/C-ECU (Refer to GROUP 55 - Troubleshooting - Diagnosis
Code Chart ).
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YES <Diagnosis code is set from the ETACS-ECU> : Perform the troubleshooting of the ETACS-ECU (Refer to GROUP 54A - ETACS - Diagnosis
Code Chart ).
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- Item 10: Seat belt fasten status
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OK:
Fastened (Driver’s seat belt: Fastened) Not fastened (Driver’s seat belt: Not fastened)
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Q.
Is the check result normal?
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Perform the troubleshooting of the seat belt reminder function circuit (Refer
to GROUP 54A - Combination Meter - Symptom Procedures - Seat Belt
Reminder Function Does Not Work Normally ).
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OK:
Close (Hood: Closed) Open (Hood: Opened)
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Q.
Is the check result normal?
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Perform the troubleshooting of the engine hood latch switch circuit (Refer to
GROUP 54A - ETACS - Input Signal Procedures - The hood latch switch
signal is not received ).
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- Refer to Data List Reference Table .
- Item 6: Clutch monitoring switch (upper)
- Item 7: Clutch interlock switch (bottom)
- Item 8: Neutral position switch
- Item 14: Brake vacuum sensor
- Item 16: Atmospheric pressure
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Q.
Are the check results normal?
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Perform the troubleshooting for the item that has an abnormal value (Refer to ).
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- Refer to Data List Reference Table .
- Item 18: Accelerator pedal position
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Q.
Is the check result normal?
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Perform the troubleshooting of the accelerator pedal position sensor (Refer to
GROUP 13D - Troubleshooting - Inspection Chart for Diagnosis Code ).
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- Refer to Data List Reference Table .
- Item 17: Vehicle speed
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Q.
Is the check result normal?
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Perform the troubleshooting of the ASC-ECU (Refer to GROUP 35C - Troubleshooting - Diagnosis
Code Chart ).
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- Item 15: Ambient temperature
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OK: At ambient temperature (atmospheric temperature) or equivalent
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Q.
Is the check result normal?
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Perform the troubleshooting of the ambient temperature sensor (Refer to GROUP 55 - Troubleshooting - Symptom
Procedure ).
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- Check the data lists of the engine-ECU (Refer to GROUP 13D - Troubleshooting - Data
List Reference Table ).
- Item 7: Engine coolant temperature sensor
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OK:
Engine cold state: At ambient temperature (atmospheric temperature) or equivalent. Engine hot state: At 80 - 120°C
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Q.
Is the check result normal?
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Perform the troubleshooting of the engine coolant temperature sensor (Refer to
GROUP 13D - Troubleshooting - Inspection Chart for Diagnosis Code ).
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- After a malfunction occurs, the negative (-)
cable is disconnected from the battery once.
- After a malfunction occurs, the connector is disconnected from the engine-ECU once.
- The odometer shown on the combination meter is beyond 262,140 km.
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Q.
Is the check result in Step 2 other than "0 km"?
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- Disconnect the negative (-) cable from the
battery (this can delete backup data).
- Charge the battery (Refer to GROUP 54A - Battery - On-vehicle
Service - Charging ).
- As soon as the battery is charged, leave the engine idling and turn off lamps and
all accessories.
- Check the data lists of the engine-ECU (Refer to GROUP 13D - Troubleshooting - Data
List Reference Table ).
- Item No. 455: Battery full-charge mode flag
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OK: The display status "ON" is changed to "OFF" within approximately 10 minutes.
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Q.
Is the check result normal?
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Turn the ignition switch to "ON" position after stopping the engine. Then go to
Step 14.
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- Turn the ignition switch to "ON" position (But do
not start the engine).
- Check the data lists of the engine-ECU (Refer to GROUP 13D - Troubleshooting - Data
List Reference Table ).
- Item No. 434: Vehicle Consumption Current
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OK:
- When the headlamp is lit, the numerical value should increase.
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Q.
Is the check result normal?
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Replace the battery current sensor.
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1. Turn the ignition switch to "ON" position (But
do not start the engine). 2. Check the data lists of the engine-ECU (Refer to GROUP 13D - Troubleshooting - Data
List Reference Table ) and adjust the electrical load so
that the displayed value should be 30 ± 2 A.
- Item No. 434: Vehicle Consumption Current
3. Continue the conditions of Step 2 for 120 seconds and discharge the battery. 4. Run the engine for 10 seconds after the engine start and check on the battery
deterioration with data lists of the engine-ECU.
- Item No. 454: Battery degrade judgment flag
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OK: OFF (Engine: Idle operation)
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5. After checking that the data list item No. 454
of the engine-ECU is displayed, swiftly turn the ignition switch to "LOCK" (OFF) position and
leave it for 10 seconds. 6. Repeat Steps 1-5 five times. Check that data list item No. 454 always shows "OFF".
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Q.
Is the check result normal?
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Recharge the battery because the battery is discharged during the check. (Refer
to GROUP 54A - Battery - On-vehicle Service - Charging ). After the
battery is charged, go to Step 16.
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- Item 12: Idle stop enable (A/C-ECU)
- Item 13: Idle stop enable (engine-ECU)
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OK: "Enable" is displayed
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Q.
Is the check result normal?
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NO <"Disable" is displayed in item 12.> : The A/C-ECU would possibly output the auto stop prohibition signal. Recheck the
auto stop prohibition signal of the A/C-ECU.
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NO <"Disable" is displayed in item 13.> : The engine-ECU would possibly output the auto stop prohibition signal. Recheck
the auto stop prohibition signal of the engine-ECU.
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Q.
Is the check result normal?
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Repair the connector(s) or wiring harness.
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Q.
Does the trouble symptom persist?
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Intermittent malfunction (Refer to GROUP 00 - How to Use Troubleshooting/Inspection
Service Points - How to Cope with Intermittent Malfunctions ).
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