If any of the following DTCs are stored, the engine stop and start ECU enters fail-safe mode to preserve vehicle operability.
| DTC | Component | Fail-safe Operation | Fail-safe Deactivation Condition |
|---|---|---|---|
| P033562 | Open in engine speed signal circuit | ·
Stop and start control is prohibited ·
Engine is automatically restarted if a DTC is stored while the engine is stopped by stop and start control |
All of the following conditions are met for 10 seconds:
·
Normal communication with ECM ·
Engine speed 500 rpm or higher ·
Engine speed (communication signal) 500 rpm or higher ·
Difference between engine speed from pulse signal and engine speed from communication signal is less than 300 rpm |
| P055500
P05552A |
·
Vacuum sensor assembly ·
Brake booster assembly ·
Vacuum hose (brake booster hose) |
·
Stop and start control is prohibited ·
Engine is automatically restarted if a DTC is stored while the engine is stopped by stop and start control |
One of the following conditions is met:
·
Vacuum changes while the brake pedal is depressed ·
Vacuum changes a specified number of times while the vehicle is being driven faster than a certain vehicle speed |
| P055511
P055515 |
Vacuum sensor assembly circuit | ·
Stop and start control is prohibited ·
Engine is automatically restarted if a DTC is stored while the engine is stopped by stop and start control |
Sensor output is within standard range |
| P060629 | Engine stop and start ECU | ·
Stop and start control is prohibited ·
Engine is automatically restarted if a DTC is stored while the engine is stopped by stop and start control |
Pass condition detected and ignition switch turned to ON |
| P060B1C
P060B49 P060B71 |
Analog to digital converter (Engine stop and start ECU) | ·
Stop and start control is prohibited ·
Engine is automatically restarted if a DTC is stored while the engine is stopped by stop and start control ·
Stop and start cancel indicator blinks |
Pass condition detected and ignition switch turned to ON |
| P061511 | ST relay circuit | Stop and start control is prohibited | Pass condition detected and DTCs are cleared |
| P061515 | Starter circuit | ·
Stop and start control is prohibited ·
Engine is automatically restarted if a DTC is stored while the engine is stopped by stop and start control |
Communication with ECM returns to normal and one of the following conditions is met:
·
The STA signal detected by the ECM and STA signals detected by the engine stop and start ECU are on for 0.3 seconds ·
The STA signal detected by the ECM and STA signals detected by the engine stop and start ECU are off for 5 seconds |
| P094296 | Oil pump with motor assembly circuit | ·
Stop and start control is prohibited ·
Engine is automatically restarted if a DTC is stored while the engine is stopped by stop and start control |
Pass condition detected and DTCs are cleared |
| P0C2B11
P0C2B15 P279796 |
Oil pump with motor assembly circuit | ·
Stop and start control is prohibited ·
Engine is automatically restarted if a DTC is stored while the engine is stopped by stop and start control |
Pass condition detected and ignition switch turned to ON |
| P0A1E00 | ·
Starter drive circuit ·
ST NO. 1 relay ·
Engine stop and start ECU |
·
Stop and start control is prohibited ·
Engine is automatically restarted if a DTC is stored while the engine is stopped by stop and start control |
Voltage of engine stop and start ECU internal drive circuit for starter is correct when engine is idling and restarted |
| P253014 | IG signal circuit | ·
Stop and start control is prohibited ·
Engine is automatically restarted if a DTC is stored while the engine is stopped by stop and start control |
All of the following conditions are met for 10 seconds or more:
·
Ignition switch ON ·
Normal communication with ECM ·
Ignition switch (communication) to ON |
| P323A00
P323A16 P323B14 P323B29 P323B38 |
Backup boost converter circuit | ·
Stop and start control is prohibited ·
Engine is automatically restarted if a DTC is stored while the engine is stopped by stop and start control |
Pass condition detected and DTCs are cleared |
| U010087 | CAN communication (ECM) | ·
Stop and start control is prohibited ·
Engine is automatically restarted if a DTC is stored while the engine is stopped by stop and start control |
Communication with engine stop and start ECU continues for 2 seconds |
| U012687 | CAN communication (steering sensor) | ·
Stop and start control is prohibited ·
Engine is automatically restarted if a DTC is stored while the engine is stopped by stop and start control |
Communication with engine stop and start ECU continues for 2 seconds |
| U012987 | CAN communication (skid control ECU (brake actuator assembly)) | ·
Stop and start control is prohibited ·
Engine is automatically restarted if a DTC is stored while the engine is stopped by stop and start control |
Communication with engine stop and start ECU continues for 4.4 seconds |
| U014087 | CAN communication (main body ECU (multiplex network body ECU)) | ·
Stop and start control is prohibited ·
Engine is automatically restarted if a DTC is stored while the engine is stopped by stop and start control |
Communication with engine stop and start ECU continues for 7.2 seconds |
| U015187 | CAN communication (airbag ECU assembly) | ·
Stop and start control is prohibited ·
Engine is automatically restarted if a DTC is stored while the engine is stopped by stop and start control |
Communication with engine stop and start ECU continues for 21.2 seconds |
| U015587 | CAN communication (combination meter assembly) | ·
Stop and start control is prohibited ·
Engine is automatically restarted if a DTC is stored while the engine is stopped by stop and start control |
Communication with engine stop and start ECU continues for 21.2 seconds |
| U016487 | CAN communication (air conditioning amplifier) | ·
Stop and start control is prohibited ·
Engine is automatically restarted if a DTC is stored while the engine is stopped by stop and start control |
Communication with engine stop and start ECU continues for 21.2 seconds |
| U117087 | CAN communication (skid control ECU (brake actuator assembly)) | ·
Stop and start control is prohibited ·
Engine is automatically restarted if a DTC is stored while the engine is stopped by stop and start control |
Communication with engine stop and start ECU continues for 21.2 seconds |