Tech Tips
Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are listed in order of probability in the "Suspected Area" column of the table. Check each symptom by checking the suspected areas in the order they are listed. Replace parts as necessary.
Inspect the fuses and relays related to this system before inspecting the suspected areas below.
| Symptom | Suspected Area | See page |
|---|---|---|
| Stop and Start System does not operate | Battery protection (System prohibit control) | |
| Engine hood courtesy switch circuit | ||
| Driver side door courtesy switch circuit (System prohibit control) | ||
| Driver side door courtesy switch circuit (CAN communication DTC U0140) | ||
| Driver side door courtesy switch circuit | ||
| Air conditioning system (System prohibit control) | ||
| Air conditioning system (Terminal voltage TFAL) | ||
| Air conditioning system (for automatic A/C system) | ||
| Air conditioning system (for manual A/C system) | ||
| Brake booster vacuum is low (System prohibit control) | ||
| Brake booster vacuum is low | ||
| Cooler thermistor circuit | ||
| Eco run vehicle converter assembly (Backup boost converter) circuit | ||
| Neutral position switch circuit | ||
| Park / Neutral position switch circuit | ||
| Crank position sensor | ||
| ECM | ||
| No. 1 integration relay | ||
| Vacuum sensor | ||
| Brake booster assembly | ||
| Oil pump motor (Continuously variable transaxle assembly) | ||
| Starter assembly | ||
| The deceleration sensor 0 point calibration is performed | ||
| Airbag sensor assembly (Yaw rate sensor) | ||
| Brake actuator assembly (skid control ECU) | ||
| CAN communication system | ||
| Engine stop and start ECU | ||
| Battery*1 | ||
| Harness or connector | - | |
| Stop and start cancel indicator does not operate | Combination meter assembly | |
| Indicator circuit (CAN communication DTC U0155) | ||
| Engine stop and start ECU | ||
| Stop and start indicator does not operate | Combination meter assembly | |
| Indicator circuit (CAN communication DTC U0155) | ||
| Engine stop and start ECU | ||
| Stop and Start system control cannot be canceled | Stop and start cancel switch | |
| ECAN terminal voltage | ||
| Stop and start cancel switch circuit | ||
| The engine does not stop due to Stop and Start system control (Stop and Start system operation is prohibited) | Engine hood courtesy switch circuit | |
| Driver side door courtesy switch circuit | ||
| Stop light switch circuit | ||
| Engine stop and start ECU | ||
| The shift lever is operated without depressing the clutch pedal (System prohibit control) | ||
| The shift lever is operated without depressing the brake pedal (System prohibit control) |
*1: When the vehicle has not been used for a long period, the battery capacity decreases, and stop and start control is disabled. In this case, after charging the battery, clear the integrated current and run the vehicle for about 15 to 40 minutes.
Tech Tips
When the battery terminal is disconnected, since stop and start control is prohibited, run the vehicle for 15 to 40 minutes until stop and start control is enabled.