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Engine Control Module Calibration Program Memory (RAM) Corruption – Condition Exists
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Overview
| CODE | REASON | EFFECT |
| Fault Code: 2217 PID: S240 SPN: 630 FMI: 11/31 LAMP: Amber SRT: |
Engine Control Module Calibration Program Memory (RAM) Corruption – Condition Exists. Severe loss of data from the ECM. |
Possible no noticeable performance effects, engine dying or hard starting. Fault information, trip information, and maintenance monitor data can be inaccurate. |
 Unswitched Battery Supply Circuit
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Circuit Description
The Electronic Control Module (ECM) receives constant voltage from the batteries through the unswitched battery wires that are connected directly to the positive (+) battery post. There is a single 30-ampere fuse in the unswitched battery wires to protect the engine harness from overheating. The ECM receives switched battery input through the vehicle keyswitch wire when the vehicle keyswitch is turned on. The battery return wires are connected directly to the negative (-) battery post. Pins 2 and 3 are optional circuits possibly not used by the OEM. Refer to the OEM wiring diagram for detailed information on the circuit.
Component Location
The ECM is located on the left side of the engine, near the front of the engine. The ECM is connected to the battery by the ECM power harness. This direct link provides a constant power supply for the ECM. The location of the battery will vary with the OEM. Refer to the OEM troubleshooting and repair manual.
Shop Talk
On-Board Diagnostics (OBD) Information (Euro 4 Certified Engines):
- The ECM illuminates the malfunction indicator lamp (MIL) when the diagnostic runs and fails.
- The ECM turns OFF the malfunction indicator lamp (MIL) after 3 consecutive ignition cycles that the diagnostic runs and does not fail. The MIL lamp and fault code can also be cleared using the INSITE™ service tool.
- The fault code will be cleared from memory after 40 consecutive drive cycles where the diagnostic runs and passes.
On-Board Diagnostics (OBD) Information (Euro 4 Stage 1+ Certified Engines):
- The ECM illuminates the malfunction indicator lamp (MIL) when the diagnostic runs and fails.
- An engine torque derate will be activated after 50 hours of engine operation with the fault code active.
- The ECM turns OFF the malfunction indicator lamp (MIL) after 1 ignition cycle that the diagnostic runs and does not fail. The MIL lamp cannot be cleared using the INSITE™ service tool.
- The fault code will be cleared from memory after 400 days or 9600 hours of engine operation.
Refer to Troubleshooting Fault Code t05-2217
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