State Display Tests

The switch inputs to the Powertrain Control Module (PCM) have two recognized states; HIGH and LOW. For this reason, the PCM cannot recognize the difference between a selected switch position versus an open circuit, a short circuit, or a defective switch.

If the State Display screen shows the change from HIGH to LOW or LOW to HIGH, assume the entire switch circuit to the PCM functions properly From the state display screen, access either State Display Inputs and Outputs or State Display Sensors.


STATE DIPLAY INPUTS AND OUTPUTS
Connect the DRB scan tool to the data link connector and access the State Display screen. Then access Inputs and Outputs. The following list contains the PCM system functions accessible through the Inputs and Outputs screen.

- A/C Switch Sense
- Park/Neutral Position
- Speed Control Resume
- Brake Switch
- Speed Control On/Off
- Speed Control Set
- Actual S/C Vent Sol
- Desired S/C Vent Sol
- Actual S/C Vac Sol
- Desired S/C Vac Sol
- Speed Ctrl Cancel
- S/C Last Cutout
- S/C Working Status
- S/C Denied Status
- A/C Clutch Relay
- Actual A/C Clutch Relay
- Desired A/C Clutch Relay
- Actual EGR Solenoid
- Desired EGR Solenoid
- Fuel Shutoff State
- Desired Automatic Shutdown Relay
- Actual ASD Relay
- ASD Relay Sense
- Actual Rad Fan Ctrl
- Desired Rad Fan Ctrl
- Desired EVAP Purge Sol.
- Power Steering Switch
- Closed Loop State
- Current CMP Edge
- Current CKP State
- Current Sync State
- Actual Fuel Pump Relay
- Desired Fuel Pump Relay
- Ignition Sense (A21)
- Malfunction Lamp
- Limp-in Reason
- Vehicle Theft Security


STATE DISPLAY SENSORS
Connect the DRB scan tool to the vehicle and access the State Display screen. Then access Sensor Display The following list contains the PCM system functions accessible through the Sensor Display screen.

- Adaptive Fuel Factor (Bank 1 and Bank 2)
- Barometric Pressure
- Battery Temperature Deg
- Battery Temp Sensor Volts
- Battery Voltage
- Cam Timing Position
- Charging System Goal Volts
- Closed Loop Timer
- Engine Coolant Temp Deg
- Engine Coolant Temp Volt
- Engine RPM
- Fuel Level Sensor Volts
- IAC Steps
- Injector Bank Pulsewidth (Left and Right)
- Intake Air Temp Degrees
- Intake Air Temp Volts
- MAP Vacuum
- Map Volts
- Minimum TPS
- Run Time At Stall
- Spark Advance
- S/C Set Speed
- Target Idle
- Target lAC Steps
- Theft Alarm Status
- Time From Start/Run
- TPS Volts
- TPS Percent
- Upstream 02S Volts
- Upstream 02S State
- Downstream 02S Volts
- Vehicle Speed Sensor
- Short Term Adaptive (Left and Right)
- Long Term Adaptive (Left and Right)
- Current Adaptive Cell ID
- Adaptive Memory Cell 0 (Left and Right)
- Adaptive Memory Cell 1 (Left and Right)
- Adaptive Memory Cell 2 (Left and Right)
- Adaptive Memory Cell 3 (Left and Right)
- Adaptive Memory Cell 4 (Left and Right)
- Adaptive Memory Cell 5 (Left and Right)
- Adaptive Memory Cell 6 (Left and Right)
- Adaptive Memory Cell 7 (Left and Right)
- Adaptive Memory Cell 8 (Left and Right)
- Adaptive Memory Cell 9 (Left and Right)
- Adaptive Memory Cell 10 (Left and Right)
- Adaptive Memory Cell 11 (Left and Right)
- Adaptive Memory Cell 12 (Left and Right)
- Adaptive Memory Cell 13 (Left and Right
- Purge Free Idle Cell (Left and Right)
- Purge Free Cell 2 (Left and Right)
- Purge Free Cell 3 (Left and Right)
- Retard Cylinder (1)
- Retard Cylinder (2)
- Retard Cylinder (3)
- Retard Cylinder (4)
- Retard Cylinder (5)
- Retard Cylinder (6)