Circuit Description
This diagnostic applies to internal microprocessor integrity conditions within the fuel injection control module (FICM).
DTC Descriptors
This diagnostic procedure supports the following DTCs:
| • | DTC P0611 Fuel Injector Control Module Performance |
| • | DTC P1293 Injector Circuit Low to High Current Transition Time Bank 1 |
| • | DTC P1294 Injector Circuit Low to High Current Transition Time Bank 2 |
| • | DTC P1295 Injector Circuit High to Low Current Transition Time Bank 1 |
| • | DTC P1296 Injector Circuit High to Low Current Transition Time Bank 2 |
| • | DTC P1658 Fuel Injector Control Module Driver Performance |
| • | DTC P1687 Fuel Injector Control Module Driver Stuck On |
Conditions For Running The DTC
| • | The ignition must be on for DTC P0611, P1293, P1294, P1295, P1296, P1658, or P1687 to run. |
| • | DTC P0611, P1293, P1294, P1295, P1296, P1658, and P1687 run continuously once the above conditions are met. |
Conditions for Setting the DTC
These codes will set when there is an internal failure in the FICM for less than 1 second.
Action Taken When DTC P1293, P1294, P1295, P1296, P1658, or P1687 Sets
| • | The control module illuminates the malfunction indicator lamp (MIL) when the diagnostic runs and fails. |
| • | The control module records the operating conditions at the time the diagnostic fails. The control module stores this information in the Freeze Frame/Failure Records. |
Action Taken When the DTC P0611 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 - Vehicle? | Go to Step 2 | Go to Diagnostic System Check - Vehicle in Vehicle DTC Information |
2 | Replace the fuel injection control module (FICM). Refer to Control Module References in Computer/Integrating Systems for replacement, setup, and programming. Did you complete the replacement? | Go to Step 3 | -- |
3 |
Did the DTC fail this ignition? | Go to Step 1 | ` Go to Step 4 |
4 | Observe the Capture Info with a scan tool. Are there any DTCs that have not been diagnosed? | Go to Diagnostic Trouble Code (DTC) List - Vehicle in Vehicle DTC Information | System OK |
