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 |
|---|---|---|---|
|
*1: for Automatic Transmission *2: for Manual Transmission |
|||
| 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 | Pass condition detected and Ignition switch turned to ON |
| P061519 | ST relay circuit | Stop and start control is prohibited | Pass condition detected and DTCs are cleared |
| P061562 | 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 and STA2 signals detected by the engine stop and start ECU are on for 0.3 seconds and "Tandem Starter" displayed for "Starter Type" in the Data List ·
The STA signal detected by the ECM and STA and STA2 signals detected by the engine stop and start ECU are off for 5 seconds and "Tandem Starter" displayed for "Starter Type" in the Data List. |
| P062F46 | 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 |
Number of starter operations and air conditioning information are registered correctly |
| P085011
P085015 |
Neutral position switch 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 |
| P085012
P085014 |
Park/Neutral position switch 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 |
| P094296 | Electromagnetic oil pump 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 |
| P154563 | Starter 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 |
DTCs and number of starter operations stored in the ECU (after replacing the starter) are cleared |
| P154863 | ·
Flywheel sub-assembly*1 ·
Flywheel with damper assembly*2 |
·
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 |
·
DTCs and number of engine start operations stored in the ECU (after replacing the flywheel sub-assembly) are cleared*1 ·
DTCs and number of engine start operations stored in the ECU (after replacing the flywheel with damper assembly) are cleared*2 |
| P158954 | G sensor zero point calibration incomplete | ·
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 |
| P160F00 | Charging control system | ·
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 |
| P161D9E | Starter delay 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 ·
Time between STA (for starter pinion) turning on and STA2 (for starter motor) turning on becomes 0.016 seconds or more |
| P164400 | ·
Starter drive circuit ·
STARTER relay ·
STARTER NO.2 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 |
| P16449E | 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 |
| P186262 | ·
Clutch start switch assembly (for lower) ·
Clutch switch assembly (for upper) |
·
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 |
Clutch start switch assembly (for lower) and clutch switch assembly (for upper) remain off for 0.5 seconds or more. |
| 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 |
| P279612
P279614 P279796 |
Electromagnetic oil pump 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 |
| P30DF62
P30EF4B P323A00 P323A16 P323AA2 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 |
| P323A19 | 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 Ignition switch turned to ON ·
DTCs (for overcurrent caused by audio volume setting) are cleared |
| P33B300 | External backup boost converter (eco run vehicle converter 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 |
1 second after external backup boost converter (eco run vehicle converter assembly) circuit becomes idle |
| 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 sensor 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 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 |
| U023A87 | CAN communication (forward recognition camera) | ·
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 |