Scan Tool Output Control | Additional Menu Selection(s) | Description | ||||||
|---|---|---|---|---|---|---|---|---|
AIR Pump Relay | Engine Output Controls / AIR System | Activates the AIR solenoid and AIR pump relay. The normal commanded state of the AIR pump relay is NONE. With the system commanded ON, the system remains ON for a maximum of 30 seconds. | ||||||
Crank Position Sensing Decode Mode | Engine Output Controls | Enables a specific crank position decode mode. The crank decode modes are ANGLE, TIME A, and TIME B. When entering the output control, the normal commanded state is NONE, the selected state is NONE, and the crank decode mode is ANGLE. To command a specific crank decode mode, change the selected state to the desired mode, and command the mode. The scan tool will require an ignition cycle. After the ignition cycle command the specific crank decode mode. The system will remain in the commanded decode mode until the next ignition cycle. | ||||||
Crankshaft Position Variation Learn | -- | Enables the PCM to learn the variations in the crankshaft position system. The PCM will learn the variations once the following conditions are met:
The PCM learns the variation values on the deceleration from fuel cut-off. | ||||||
Cylinder Power Balance | Fuel System | Enables / Disables a cylinder by turning OFF the fuel injector to the cylinder. The fuel injector is normally enabled. The PCM disables the fuel injector when the following conditions are met:
When the DISABLE is selected, the PCM turns the injector OFF for 30 seconds. During this period, the engine operates with a misfire. | ||||||
EGR Solenoid | Engine Output Controls | Activates the EGR solenoid that controls EGR valve position. The normal commanded state is NONE. The system will INCREASE or DECREASE the amount of EGR opening by 10% increments within a range of 0-100%. The system remains in the commanded state until cancelled by the tool. If the engine is running, too much EGR will result in a rough idle and/or stalling. | ||||||
EVAP Purge | Engine Output Controls / EVAP System | Activates the EVAP purge valve. The normal commanded state is NONE. The system will INCREASE or DECREASE the amount of EVAP purge valve opening by 10% increments within a range of 0-100%. The system remains in the commanded state until cancelled by the tool or the fuel tank pressure exceeds 24 mmHg (12 in H20). | ||||||
EVAP Purge/Seal | Engine Output Controls / EVAP System | This control enables two functions. One function increases or decreases the amount of purge by changing the duty cycle of the purge valve and commanding the vent ON (non-venting). The normal commanded state of both valves is NONE. The system will INCREASE or DECREASE the amount of EVAP purge valve opening by 10% increments within a range of 0-100%. The second function seals the system after using the purge function to obtain a specific amount of fuel tank pressure. When activated the purge valve is commanded to 0% and the vent valve is commanded ON (non-venting). Both functions remain in the commanded state until cancelled by the tool or the fuel tank pressure exceeds 24 mmHg (12 in H20). | ||||||
EVAP Vent | Engine Output Controls / EVAP System | Activates the EVAP vent solenoid. The normal commanded state is NONE. When commanded ON, the vent valve switches to non-venting. The system remains in the commanded state unless one of the following conditions occurs:
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Fuel Injector Balance | Fuel System | Enables fuel injector in order to verify proper fuel injector flow. The PCM will pulse the selected injector when the following conditions are met:
The selected fuel injector can only be flowed/pulsed once per ignition cycle. | ||||||
Fuel Pump | Engine Output Controls | Controls the fuel pump relay. The normal commanded state is NONE. When commanded ON/OFF, the PCM turns the fuel pump ON/OFF. If the engine is running, and the fuel pump is commanded OFF, the engine will stall. The system remains in the commanded state until cancelled by the scan tool. | ||||||
Fuel Trim Reset | Fuel System | Activates the reset of fuel trim data in all fuel trim cells. | ||||||
Loop Status | Engine Output Controls | Controls the system loop status. The commanded states include NONE, OPEN, or CLOSED. The normal commanded state is NONE. When commanded OPEN or CLOSED, the system remains in the commanded state until cancelled by the scan tool. | ||||||
Malfunction Indicator Lamp | Engine Output Controls | Controls the malfunction indicator lamp (MIL). The commanded states include NONE, ON, and OFF. When commanded ON or OFF, the system remains in the commanded state until cancelled by the scan tool. | ||||||
Misfire Graph | -- | Graphs the accumulated misfires occurring in each cylinder. The scan tool allows for a reset of the misfire graph. | ||||||
O2S Heater Driver 1 | Engine Output Controls | Activates the following HO2S heaters:
The commanded states include NONE, ON, and OFF. The normal commanded state is NONE. Commanding O2S Heater Driver 1 ON turns on both heater driver 1 and heater driver 3. On a cold engine, with the key ON, engine OFF, the HO2S signals will continue to drop below bias when commanded ON. The system remains in the commanded state until cancelled by the tool. | ||||||
O2S Heater Driver 3 | Engine Output Controls | Activates the HO2S Bank 2 Sensor 1 Heater. The commanded states include NONE, ON, and OFF. The normal commanded state is NONE. Commanding O2S Heater Driver 3 ON turns on heater driver 3 only. On a cold engine, with the key ON, engine OFF, the HO2S signal will continue to drop below bias when commanded ON. The system remains in the commanded state until cancelled by the tool. | ||||||
O2S Heater Driver 4 | Engine Output Controls | Activates the HO2S Bank 1 Sensor 2 Heater. The commanded states include NONE, ON, and OFF. The normal commanded state is NONE. Commanding O2S Heater Driver 4 ON turns on heater driver 4 only. On a cold engine, with the key ON, engine OFF, the HO2S signal will continue to drop below bias when commanded ON. The system remains in the commanded state until cancelled by the tool. | ||||||
RPM Control | IAC System | Activates the idle air control (IAC) valve to change engine RPM. The normal commanded state is NONE. To enable the RPM control, all instruction on the scan tool must be completed. The system will INCREASE or DECREASE the RPM within a range of 400-2000 RPM. The SET STEP VALUE changes the RPM by increments of 25 RPM, 100 RPM, and 500 RPM. The system remains in the commanded state until cancelled by the tool. | ||||||
Service Bay Test | -- | Activates the Service Bay Test to verify the integrity of the EVAP system. The scan tool initiates the test when the following conditions are met:
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Spark Retard | Engine Output Controls | Controls the amount of spark retard. The normal commanded state is NONE. The system will INCREASE or DECREASE the amount of spark retard by 1-degree increments within a range of 0-10 degrees maximum retard. The system remains in the commanded state until cancelled by the tool. |
