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ECM
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Overview
| CODE | REASON | EFFECT |
| Fault Code: 342 PID: S253 SPN: FMI: 12 LAMP: Red SRT: 00-606 |
The electronic control module was not calibrated with ESDN or there is an internal memory error. |
Engine will not start (no power to fuel solenoid). |
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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
Possible causes of this code are an ECM internal failure and an uncalibrated ECM. If there are more than three inactive counts, replace the ECM.
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 if ECM has been calibrated. | Calibrated ECM | |
| STEP 1B. Check ECM for active Fault Code 342. | Fault Code 342 inactive | |
| STEP 1C. Check for inactive counts of Fault Code 342. | Two or fewer inactive counts of Fault Code 342 | |
| STEP 2. | Clear the fault codes. | |
| STEP 2A. Clear the inactive fault codes. | All fault codes cleared | |
Guided Step 1 – Check the ECM.
| Guided Step 1A – Check if ECM has been calibrated. | |
|---|---|
Conditions
Action
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| OK | NOT OK |
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Calibrated ECM |
ECM needs calibration Refer to Procedure 019-032. |
| Guided Step 1B – Check ECM for active Fault Code 342. | |
|---|---|
Conditions
Action
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|
| OK | NOT OK |
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Fault Code 342 inactive |
Fault Code 342 active |
|
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 1C – Check for inactive counts of Fault Code 342. | |
|---|---|
Conditions
Action
|
|
| OK | NOT OK |
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Two or fewer inactive counts of Fault Code 342. |
Three of more inactive counts of Fault Code 342 Replace the ECM Refer to Procedure 019-031. |
Guided Step 2 – Clear the fault codes.
| Guided Step 2A – Clear the inactive fault codes. | |
|---|---|
Conditions
Action
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| OK | NOT OK |
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All fault codes cleared |
Troubleshoot any remaining active fault codes. |
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Repair Complete
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Appropriate troubleshooting chart
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