ECM RAM Memory
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Overview
CODE | REASON | EFFECT |
Fault Code: 335 PID: S254 SPN: FMI: 12 LAMP: Red SRT: 00-606 |
RAM memory error inside electronic control module. | Unpredictable. Possibly will not start (no power to either fuel solenoid or injectors). |
Electronic Control Module |
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Circuit Description
The CELECT™ electronic control module (ECM) is a computer that is responsible for engine control, diagnostics, and user features.
Component Location
ECM is bolted to the left side of the engine.
Shop Talk
A possible cause for this code is an ECM internal failure.
Cautions and Warnings
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To reduce the possibility of damaging the new ECM, all other active fault codes must be investigated prior to replacing the ECM. |
Troubleshooting Steps
STEPS | SPECIFICATIONS | |
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STEP 1. | Check the ECM. | |
STEP 1A. Check the ECM. | Fault Code 335 inactive | |
STEP 1A-1. Check the new ECM. | ||
STEP 2. | Clear the fault codes. | |
STEP 2A. Clear the inactive fault codes. | All fault codes cleared |
Guided Step 1 – Check the ECM.
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To reduce the possibility of damaging the new ECM, all other active fault codes must be investigated prior to replacing the ECM. |
Guided Step 1A – Check the ECM. | |
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Conditions
Action
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OK | NOT OK |
Fault Code 335 inactive | Replace the ECM
Refer to Procedure 019-031. |
Guided Step 1A-1 – Check the new ECM. | |
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Conditions
Action
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OK | NOT OK |
Fault Code 335 inactive | Return to the troubleshooting steps or contact your nearest Cummins Authorized Repair Location if all the steps have been completed and checked again. |
Guided Step 2 – Clear the fault codes.
Guided Step 2A – Clear the inactive fault codes. | |
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Conditions
Action
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OK | NOT OK |
All fault codes cleared | Troubleshoot any remaining active fault codes. |
Repair Complete
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Appropriate troubleshooting chart
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Last Modified: 08-Sep-2004