Engine Overspeeds
Use this procedure in order to troubleshoot an engine overspeed or use this procedure if the following event code is active. Refer to Troubleshooting, "Event Codes" for information about event codes. For information on the engine monitoring system, refer to Troubleshooting, "Engine Monitoring System".
Note: Some of the following codes may not be applicable for certain applications.
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| Diagnostic Trouble Codes | |||
|---|---|---|---|
| J1939 Code | CDL Code | Code Description | System Response |
| 190-0 | E362 (3) | Engine Speed : High - most severe (3) | The engine has exceeded the maximum speed for time. |
| 190-15 | E362 (1) | Engine Speed : High - least severe (1) | The engine has exceeded the maximum speed for time. |
| 190-16 | E362 (2) | Engine Speed : High - moderate severity (2) | The engine has exceeded the maximum speed for time. |
- Proper operation of the turbocharger
- Intake air
- Starting aids that are not operating properly
Note: The procedures have been listed in order of probability. Complete the procedures in order.
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| Troubleshooting Test Steps | Values | Results |
|---|---|---|
1. Proper Operation of the Turbocharger A. Check for proper operation of the turbocharger. B. Check for any oil that may be leaking into the air inlet. |
Turbocharger |
Result: The turbocharger is leaking oil into the inlet. Repair or replace the turbocharger. Result: The turbocharger is not leaking oil into the inlet. Proceed to Test Step 3. |
2. Intake Air A. Check for combustible gases in the surrounding atmosphere. B. Check for proper operation of starting aids (if equipped). |
Air quality |
Result: The atmosphere has combustible gases. Do not operate the engine in an environment with combustible gases. |
Complete the procedure in the order in which the steps are listed.
The procedure corrected the issue. Return the engine to service.
The procedure did not correct the issue.
Contact your Cat dealer Technical Communicator (TC). For further assistance, your TC can confer with the Dealer Solutions Network (DSN).
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