Circuit Description
The fuel injection control module (FICM) has the ability to perform internal circuit checks on the FICM microprocessor, status of the monitoring module, and status of the FICM A/D conversion module. If the FICM senses a problem in the FICM circuits, the FICM will send an error message to the engine control module (ECM). If this condition exists, DTC P0611 will set.
Conditions for Running the DTC
| • | The ignition is ON. |
| • | DTC U1800 or U2104 are not set. |
Conditions for Setting the DTC
The FICM detects an internal circuit fault.
Action Taken When the DTC Sets
| • | The control module illuminates the malfunction indicator lamp (MIL) on the second consecutive ignition cycle that the diagnostic runs and fails. |
| • | The control module records the operating conditions at the time the diagnostic fails. The first time the diagnostic fails, the control module stores this information in the Failure Records. If the diagnostic reports a failure on the second consecutive ignition cycle, the control module records the operating conditions at the time of the failure. The control module writes the operating conditions to the Freeze Frame and updates the Failure Records. |
Conditions for Clearing the MIL/DTC
| • | The control module turns OFF the malfunction indicator lamp (MIL) after 3 consecutive ignition cycles that the diagnostic runs and does not fail. |
| • | A current DTC, Last Test Failed, clears when the diagnostic runs and passes. |
| • | A history DTC clears after 40 consecutive warm-up cycles, if no failures are reported by this or any other emission related diagnostic. |
| • | Clear the MIL and the DTC with a scan tool. |
Step | Action | Yes | No |
|---|---|---|---|
1 | Did you perform the Diagnostic System Check-Engine Controls? | Go to Step 2 | |
2 | Replace the fuel injection control module. Refer to Fuel Injector Control Module Replacement . Did you complete the replacement? | Go to Step 3 | -- |
3 |
Does the DTC run and pass? | Go to Step 4 | Go to Step 1 |
4 | With a scan tool, observe the stored information, Capture Info. Does the scan tool display any DTCs that you have not diagnosed? | System OK |
