C13 Engines for Caterpillar Built Machines Caterpillar

Use this procedure to troubleshoot an engine overspeed or use this procedure if one of the codes in Table 1 is active.

Table 1

Diagnostic Trouble Codes
CDL Code	Comments
E362 (3) Engine Speed : High - most severe (3)	The code requires factory passwords to be cleared.
E362 (1) Engine Speed : High - least severe (1)	The code is logged.

Probable Causes

• Proceeding down steep grades (if applicable)

• Proper operation of the turbocharger

• Intake air

• Starting aids that are not operating properly

Recommended Actions

Table 2

Troubleshooting Test Steps	Values	Results
1. Check for Steep Grade Acceleration (If Applicable) Note: Engaging the engine brakes on a steep grade may be necessary. A. The operator needs to understand the proper operation of the machine while using the engine brakes.	Steep Grades	Result: Steep grades are not the cause of the overspeed. Proceed to Test Step 2. Result: Steep grades are the cause of the overspeed. Repair: Control the engine speed during steep grades. If the problem is not resolved, proceed to Test Step 2.
2. Check for 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 OK. Proceed to Test Step 3. Result: The turbocharger is NOT OK. Repair: Repair or replace the turbocharger. If the problem is not resolved, proceed to Test Step 3.
3. Inspect the Intake Air A. Check for combustible gases in the surrounding atmosphere. B. Check for proper operation of starting aids (if equipped).	Intake air quality	Result: The atmosphere has combustible gases. Repair: Do not operate the engine in an environment with combustible gases.

If the problem is not resolved, contact your Technical Communicator (TC). For further assistance, the TC can confer with the Dealer Solutions Network (DSN).