HOUSING AS-TURBINE 4500507 - Caterpillar

Use this procedure to troubleshoot the following codes or if the air shutoff system is not operating properly.
Table 1
Diagnostic Codes    
J1939 Code     CDL Code     Code Description
(code descriptions may vary)     Comments    
2813-5     3239-5     Air Shutoff Relay : Current Below Normal     The code is logged.    
2813-6     3239-6     Air Shutoff Relay : Current Above Normal     The code is logged.    
3667-2     E2088 (1)     Engine Air Shutoff Status : Erratic, Intermittent, or Incorrect     The inlet air shutoff valve switch has been used, but the inlet air shutoff valve feature is set as "Disabled" in the configuration parameters.    
3667-31     E2087 (3)     Engine Air Shutoff Status     The engine air shutoff valve has been activated. The engine was shut down and injection is disabled. Perform a key cycle and reset the air inlet shutoff system.    
Follow the troubleshooting procedure in order to identify the root cause of the problem.    Note: The "Air Shutoff" parameter must be set to "Enabled" in order for the ECM to energize the air shutoff solenoid.Complete the procedure in the order in which the steps are listed.
Table 2
Troubleshooting Test Steps    Values    Results    
1. Check for Diagnostic Trouble Codes
A. Establish communication between Cat® Electronic Technician (ET) and the Electronic Control Module (ECM) . Refer to Troubleshooting, "Electronic Service Tools", if necessary.
B. Determine if a code is active or logged.
   
Diagnostic Code    
Result: A 3667-31, or E2087 (3) code is active or logged, or the air inlet shutoff valve is not working properly.
Proceed to Test Step 2.
Result: A 3239-5 or 2813-5 code is active or logged.
Proceed to Test Step 11.
Result: A 3239-6 or 2813-6 code is active or logged.
Proceed to Test Step 12.
Result: A 3667-2 or E2088 (1) code is active or logged.
Proceed to Test Step 13.
   
2. Perform the "Air Inlet Shutoff Override"
A. Turn the key switch to the OFF position.
B. Connect Cat ET to the service tool connector.
C. Turn the key switch to the ON position.
D. Place the transmission in neutral.
If the engine will not start, check the air inlet valve to ensure that the valve is not stuck closed.
E. Start the engine. Increase the engine speed to 1500 rpm 100 rpm.
F. Access the "Air Inlet Shutoff Override" in the "Diagnostic Tests" under the "Diagnostics" menu in Cat ET.
G. Start the test.
H. Wait for the engine to stop.
I. Stop the test.
   
Test    
Result: The engine is shut down when the "Air Inlet Shutoff Override" is activated. The air inlet shutoff is working correctly.
Repair: Reset the air inlet shutoff system. Proceed to Test Step 3.
Result: The engine did not shut down.
Proceed to Test Step 5.
   
3. Check the Air Inlet Shutoff Switch
A. Turn the key switch to the ON position.
B. Connect Cat ET to the service tool connector.
C. Use Cat ET to monitor the status for the air inlet shutoff switch while the switch is depressed.
   
Switch Works Correctly    
Result: The status of the