Aftertreatment Identification Module - Test
Table 1 lists the diagnostic trouble codes for the Aftertreatment Identification Module.
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| Diagnostic Trouble Codes | ||
|---|---|---|
| J1939 Code | Code Description
(code descriptions may vary) |
Comments |
| 5576-2 | Aftertreatment #1 Identification : Erratic, Intermittent, or Incorrect | The installed Clean Emissions Module (CEM) #1 is not a certified match with the engine.
The code is a confirmed emissions regulation violation. A financial penalty and/or legal action may result, if the problem is not corrected immediately. Do not operate the engine with the active fault. Engine power is derated. |
| 5576-8 | Aftertreatment #1 Identification : Abnormal Frequency, Pulse Width, or Period | Emissions do not conform to regulations. Do not continue to operate the engine with the active fault. Engine power is derated. |
| Follow the troubleshooting procedure in order to identify the root cause of the problem. | ||
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| Troubleshooting Test Steps | Values | Results |
|---|---|---|
1. Check for Diagnostic Trouble Codes A. Establish communication between Caterpillar Electronic Technician (ET) and the Electronic Control Module (ECM). Refer to Troubleshooting, "Electronic Service Tools", if necessary. B. Download the "Warranty Report" from the engine ECM before performing any troubleshooting or clearing diagnostic trouble codes. |
Diagnostic trouble codes |
Result: A 5576-2 or 5576-8 diagnostic code is active. Proceed to Test Step 2. |
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| |
| Illustration 1 | g02896037 |
|
Typical CEM identification plate | |
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| Troubleshooting Test Steps | Values | Results |
|---|---|---|
2. Manually Enter the Aftertreatment Identification Information The CEM identification plate is located on the electronics panel. Factory Passwords are required for this procedure. A. Confirm that a certified CEM is installed on the engine. Contact your local Caterpillar dealer for a list of approved CEM and RF configurations for your engine. B. Record the affected CEM serial number and the configuration group from the CEM Identification Plate. C. Verify that the affected CEM is a certified match with the engine. Contact a Caterpillar technical communicator, if necessary. |
Certified match |
Result: The affected CEM is a certified match with the engine. Proceed to Test Step 3. Result: The affected CEM is not a certified match for the engine. Remove the affected CEM and replace the affected CEM with a certified match for the engine. Refer to Disassembly and Assembly for removal and installation procedures. When the new CEM is installed, the"Aftertreatment Identification Number Module" will begin communicating with the ECM and the diagnostic code will be cleared. When determining if a CEM is a certified match: The engine ECM will only communicate with the CEM if the total lifetime hours of the engine are less than 100. If the hours are greater than 100, the information from the CEM identification plate must be programmed into the ECM by using Cat ET. |
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| |
| Illustration 2 | g03777734 |
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| Troubleshooting Test Steps | Values | Results |
|---|---|---|
3. Aftertreatment Configuration A. Establish communication between Cat® ET and the affected ECM. Refer to Troubleshooting, "Electronic Service Tools", if necessary. B. Navigate to the "Aftertreatment Configuration" in the affected "Engine Aftertreatment Controller" page. C. Program the required "Factory Installed Aftertreatment Identification Number" with the serial number from the CEM Identification Plate. |
CEM configuration |
Result: The diagnostic code is automatically cleared. Return to service. |
Complete the procedure in the order in which the steps are listed.
Caterpillar Information System:
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