Circuit Actuation Test Mode

The Circuit Actuation Test Mode checks for proper operation of output circuits or devices the Powertrain Control Module (PCM) may not internally recognize. The PCM attempts to activate these outputs and allow an observer to verify proper operation. Most of the tests provide an audible or visual indication of device operation (click of relay contacts, fuel spray, etc.). Except for intermittent conditions, if a device functions properly during testing, assume the device, its associated wiring, and driver circuit work correctly.

OBTAINING CIRCUIT ACTUATION TEST
Connect the DRB scan tool to the vehicle and access the Actuators screen. The following is a list of the engine control system functions accessible through Actuators screens. Subordinate screens for each actuator test are also listed.

- Stop All Tests
- Ignition Coil #1
- Ignition Coil #2
- Fuel Injector #1
- Fuel Injector #2
- Fuel Injector #3
- Fuel Injector #4
- Fuel Injector #5
- Fuel Injector #6
- Idle Air Control Motor Open/Close
- Radiator Fan Relay
- A/C Clutch Relay
- Auto Shutdown Relay
- Duty Cycle EVAP Purge Solenoid
- S/C Servo Solenoids
- Generator Field
- Tachometer Output
- EGR Solenoid
- All Solenoids/Relays
- Fuel System Test
- Speed Control Vacuum Solenoid
- Speed Control Vent Solenoid
- Fuel Pump Relay
- Set RPM 900
- Set RPM 1,000
- Set RPM 1,100
- Set RPM 1,200
- Set RPM 1,300
- Set RPM 1,400
- Set RPM 1,500
- Set RPM 1,600
- Set RPM 1,700
- Set RPM 1,800
- Set RPM 1,900
- Set RPM 2,000