FAULT CODE 335

ECM RAM Memory

Printable Version  Printable Version

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

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


 CAUTION 

 

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
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.

 CAUTION 

 

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.

Conditions

  • Connect all components.

Action

  • Turn vehicle keyswitch OFF and wait five seconds.
  • Turn vehicle keyswitch ON and idle engine for at least one minute.
OK NOT OK
Fault Code 335 inactive Replace the ECM

Refer to Procedure 019-031.

Guided Step 1A-1 – Check the new ECM.

Conditions

  • Connect all components.

Action

  • Start the engine and let idle for one minute.
  • Verify Fault Code 335 is inactive.
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.

Conditions

  • Connect all the components.

Action

  • Erase the inactive fault codes using INSITE™ electronic service tool.
OK NOT OK
All fault codes cleared Troubleshoot any remaining active fault codes.
Repair Complete
Appropriate troubleshooting chart
Last Modified:  08-Sep-2004