DESCRIPTION
The ECM monitors its internal operation and stores this DTC when it detects an internal malfunction.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | MIL | Memory | Note |
|---|---|---|---|---|---|---|
| P062F | Internal Control Module EEPROM Error | An ECM internal error (EEPROM) (1 trip detection logic). | ECM | Comes on | DTC stored | DTC for Mexico Models - Applies |
MONITOR DESCRIPTION
The ECM monitors its internal operation. If the internal operation is malfunctioning, the ECM illuminates the MIL and stores this DTC.
DTC P0630 is stored when the Vehicle Identification Number (VIN) is not stored in the ECM or the input VIN is not accurate.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | MIL | Memory | Note |
|---|---|---|---|---|---|---|
| P0630 | VIN not Programmed or Mismatch - ECM / PCM | Either of the following conditions is met (1 trip detection logic): The VIN is not stored in the ECM. The VIN input into the ECM is not accurate. | ECM | Comes on | DTC stored | DTC for Mexico Models - Not apply |
The ECM monitors the output voltage to the throttle actuator. This self-check ensures that the ECM is functioning properly. The output voltage is usually 0 V when the ignition switch is turned off. If the output voltage is higher than 7 V when the ignition switch is turned off, the ECM will illuminate the MIL and store this DTC when the ignition switch is turned to ON.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | MIL | Memory | Note |
|---|---|---|---|---|---|---|
| P0657 | Actuator Supply Voltage Circuit / Open | Throttle actuator power supply error (1 trip detection logic). | ECM | Comes on | DTC stored | DTC for Mexico Models - Applies |
The stop light switch assembly is part of a duplex system that transmits two signals: STP and ST1-. These two signals are used by the ECM to monitor whether or not the brake system is working properly. This DTC indicates that the stop light switch assembly is remaining on. When the stop light switch assembly remains on during "STOP and GO" driving, the ECM interprets this as a fault in the stop light switch assembly. The ECM will illuminate the MIL and store this DTC.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | MIL | Memory | Note |
|---|---|---|---|---|---|---|
| P0724 | Brake Switch "B" Circuit High | The stop light switch assembly remains on even when the vehicle repeats 5 cycles of STOP (less than 3 km/h [1.86 mph]) and GO (30 km/h [18.65 mph] or more) (2 trip detection logic). | Short in stop light switch signal circuit Stop light switch assembly ECM | Comes on | DTC stored | DTC for Mexico Models - Applies |
This DTC indicates that the stop light switch assembly is remaining on. When the stop light switch assembly remains on during "STOP and GO" driving, the ECM interprets this as a malfunction of the stop light switch assembly. The ECM turns on MIL and stores this DTC. The vehicle must STOP (less than 3 km/h [1.86 mph]) and GO (30 km/h [18.65 mph] or more) 5 times during 2 driving cycles, in order to detect a malfunction.
P1603 (for A/T, CVT models)
After starting the engine, this DTC is stored when the engine stops without the ignition switch being operated.
Using the Techstream, the conditions present when the DTC was stored can be confirmed by referring to the freeze frame data. Freeze frame data records engine conditions when a malfunction occurs. This information can be useful when troubleshooting.
It is necessary to check if the vehicle has run out of fuel before performing troubleshooting, as this DTC is also stored when the engine stalls due to running out of fuel.
P1605
This DTC is stored if the engine speed drops below the set speed.
Using the Techstream, the conditions present when the DTC was stored can be confirmed by referring to the freeze frame data. Freeze frame data records engine conditions when a malfunction occurs. This information can be useful when troubleshooting.
It is necessary to check if the vehicle ran out of fuel before performing troubleshooting, as this DTC is also stored when idling is unstable due to running out of fuel.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | MIL | Memory | Note |
|---|---|---|---|---|---|---|
| P1603 | Engine Stall History | After monitoring for startability problems (P1604) finishes and 5 seconds or more have elapsed after starting the engine, with the engine running, the engine stops (the engine speed drops to 200 RPM or less) without the ignition switch being operated for 0.5 seconds or more (1 trip detection logic). | Air leak in intake system Purge VSV Brake booster assembly Mass air flow meter sub-assembly Engine coolant temperature sensor Power supply circuit (purge VSV, air fuel ratio sensor, fuel injector assembly, ignition coil assembly) Fuel pump Fuel pump control circuit Fuel line PCV valve and hose Camshaft timing oil control valve assembly Knock control sensor Ignition system Thermostat Air conditioning system Power steering system Electrical load signal system Charging system A/T or CVT system Park/Neutral position switch assembly ECM Immobilizer system Wire harness or connector | Does not come on | DTC stored | DTC for Mexico Models - Applies |
| P1605 | Rough Idling | After 5 seconds or more have elapsed after starting the engine, with the engine running, the engine speed drops to 400 RPM or less (1 trip detection logic). | Air leak in intake system Purge VSV Brake booster assembly Mass air flow meter sub-assembly Engine coolant temperature sensor Power supply circuit (purge VSV, air fuel ratio sensor, fuel injector assembly, ignition coil assembly) Fuel pump Fuel pump control circuit Fuel line PCV valve and hose Camshaft timing oil control valve assembly Knock control sensor Ignition system Thermostat Air conditioning system Power steering system Electrical load signal system Charging system A/T or CVT system* Park/Neutral position switch assembly* ECM Immobilizer system Wire harness or connector | Does not come on | DTC stored | DTC for Mexico Models - Applies |
*: for A/T and CVT models.
This DTC is stored when the engine does not start even though the STA signal is input or when the engine takes a long time to start, and when the engine speed is low or the engine stalls just after the engine starts.
Using the Techstream, the conditions present when the DTC was stored can be confirmed by referring to the freeze frame data. Freeze frame data records engine conditions when a malfunction occurs. This information can be useful when troubleshooting.
It is necessary to check if the vehicle ran out of fuel before performing troubleshooting, as this DTC is also stored when there is engine starting trouble due to running out of fuel.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | MIL | Memory | Note |
|---|---|---|---|---|---|---|
| P1604 | Startability Malfunction | Either conditions is met: The engine speed is below 500 RPM with the STA signal on for a certain amount of time (refer to the illustration below) (1 trip detection logic). After the engine starts (engine speed is 500 RPM or more), the engine speed drops to 200 RPM or less within approximately 2 seconds (1 trip detection logic). | Engine assembly (excess friction, compression loss) Starter assembly Crankshaft position sensor Camshaft position sensor Engine coolant temperature sensor Fuel pump Fuel pump control system Fuel line (fuel filter, pipes and hoses) Fuel injector assembly Throttle body assembly Fuel pressure regulator Battery Drive plate and ring gear sub-assembly*1 Flywheel sub-assembly*2 Spark plug Ignition coil assembly circuit Intake system Camshaft timing oil control valve assembly Mass air flow meter sub-assembly Air fuel ratio sensor Valve timing Fuel Purge VSV Intake valve Immobilizer system ECM | Does not come on | DTC stored | DTC for Mexico Models - Applies |
*1: for A/T and CVT models.
*2: for M/T models.
Scheme 445
The ECM continuously monitors its main and sub CPUs. This self-check ensures that the ECM is functioning properly. If outputs from the CPUs are different and deviate from the standard, the ECM will illuminate the MIL and store this DTC.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | MIL | Memory | Note |
|---|---|---|---|---|---|---|
| P1607 | Cruise Control Input Processor | ECM CPUs malfunction (1 trip detection logic). | ECM | Comes on | DTC stored | DTC for Mexico Models - Applies |
The throttle actuator is operated by the ECM and opens and closes the throttle valve using gears.
The opening angle of the throttle valve is detected by the throttle position sensor, which is mounted on the throttle body assembly. The throttle position sensor provides feedback to the ECM. This feedback allows the ECM to appropriately control the throttle actuator and monitor the throttle opening angle as the ECM responds to driver inputs.
HINT
This Electronic Throttle Control System (ETCS) does not use a throttle cable.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | MIL | Memory | Note |
|---|---|---|---|---|---|---|
| P2102 | Throttle Actuator Control Motor Circuit Low | Both of the following conditions are met for 2.0 seconds (1 trip detection logic): (a) The throttle actuator drive duty cycle is 80% or higher. (b) The throttle actuator current is less than 0.5 A. | Open in throttle actuator circuit Throttle actuator ECM | Comes on | DTC stored | DTC for Mexico Models - Applies |
| P2103 | Throttle Actuator Control Motor Circuit High | One of the following conditions is met (1 trip detection logic): A motor driver IC high current limiter monitor input failure. A motor driver IC high current inhibit signal on. A motor driver IC high commanded duty cycle monitor input failure. | Short in throttle actuator circuit Throttle actuator Throttle valve Throttle body assembly ECM | Comes on | DTC stored | DTC for Mexico Models - Applies |
The ECM monitors the electrical current through the electronic actuator, and detects malfunctions and open circuits in the throttle actuator based on this value. If the current is outside the standard range, the ECM determines that there is a malfunction in the throttle actuator. In addition, if the throttle valve does not function properly (for example, stuck on), the ECM determines that there is a malfunction. The ECM then illuminates the MIL and stores a DTC.
The idle speed is controlled by the Electronic Throttle Control System (ETCS). The ETCS is comprised of a throttle actuator, which operates the throttle valve, and a throttle position sensor, which detects the opening amount of the throttle valve. The ECM controls the throttle actuator to adjust the throttle valve opening amount so that the idle speed is maintained at the target idle speed.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | MIL | Memory | Note |
|---|---|---|---|---|---|---|
| P2109 | Throttle / Pedal Position Sensor "A" Minimum Stop Performance | The ISC learned value is approximately 3 times larger than normal even though the actual intake air amount during idle is within the normal range (up to 1.5 times the normal amount) (5 trip detection logic). | Throttle body assembly | Does not come on | DTC stored | DTC for Mexico Models - Applies |
HINT
- The ISC learned value is the calculated intake air amount corresponding to the throttle opening amount necessary to maintain the idling speed.
- This malfunction is only detected once per trip. After it has been detected once, the system will not monitor for the malfunction for the rest of the trip.
- The system uses the throttle body assembly and mass air flow meter sub-assembly to detect this malfunction.
If there are deposits in the throttle valve, a decrease in the ISC flow rate may cause engine stall or unstable idling. Therefore, the necessary ISC flow rate for idling is maintained using the ISC learned value and feedback. The ECM stores this DTC if the ISC learned value approaches its limit. The ECM begins monitoring for the DTC detection conditions when the following preconditions are met
1) The mass air flow meter sub-assembly is normal.
2) Atmospheric pressure is 85 kPa(abs) [637.6 mmHg(abs)] or higher.
3) The vehicle has been driven at a speed of 30 km/h (18.7 mph) or more at least once.
4) The engine coolant temperature is 45°C (113°F) or less at engine start, the engine is warmed up and conditions for ISC learning are met, or the ignition switch has been turned to ON (including when the engine running) for 1 hour or more, the engine is warmed up and conditions for ISC learning are met.
The throttle actuator is operated by the ECM, and opens and closes the throttle valve using gears. The opening angle of the throttle valve is detected by the throttle position sensor, which is mounted on the throttle body assembly. The throttle position sensor provides feedback to the ECM. This feedback allows the ECM to appropriately control the throttle actuator and monitor the throttle opening angle as the ECM responds to driver inputs.
HINT
This Electronic Throttle Control System (ETCS) does not use a throttle cable.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | MIL | Memory | Note |
|---|---|---|---|---|---|---|
| P2111 | Throttle Actuator Control System - Stuck Open | The ECM signals the throttle actuator to close, but the actuator is stuck (1 trip detection logic). | Throttle actuator Throttle body assembly Throttle valve Wire harness or connector ECM | Comes on | DTC stored | DTC for Mexico Models - Applies |
| P2112 | Throttle Actuator Control System - Stuck Closed | The ECM signals the throttle actuator to open, but the actuator is stuck (1 trip detection logic). | Throttle actuator Throttle body assembly Throttle valve Wire harness or connector ECM | Comes on | DTC stored | DTC for Mexico Models - Applies |
The ECM determines that there is a malfunction in the ETCS when the throttle valve remains at a fixed angle despite a high drive current from the ECM. The ECM illuminates the MIL and stores a DTC.
The electronic throttle control system has a dedicated power supply circuit. The voltage (+BM) is monitored and when it is low (less than 4 V), the ECM determines that there is a malfunction in the electronic throttle control system and cuts off the current to the throttle actuator.
When the voltage becomes unstable, the electronic throttle control system itself becomes unstable. For this reason, when the voltage is low, the current to the throttle actuator is cut. If repairs are made and the system returns to normal, turn the ignition switch off. The ECM then allows the current to flow to the throttle actuator so that it can be restarted.
HINT
The electronic throttle control system does not use a throttle cable.
Scheme 446
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | MIL | Memory | Note |
|---|---|---|---|---|---|---|
| P2118 | Throttle Actuator Control Motor Current Range / Performance | An open in the electronic throttle control system power source (+BM) circuit (1 trip detection logic). | Open in electronic throttle control system power source circuit Battery Battery terminals ETCS fuse ECM | Comes on | DTC stored | DTC for Mexico Models - Applies |
The ECM monitors the battery supply voltage applied to the throttle actuator.
When the power supply voltage (+BM) is less than 4 V for 0.8 seconds or more, the ECM interprets this as an open in the power supply circuit (+BM). The ECM illuminates the MIL and stores this DTC.