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SEAT & MOUNTING GP 4646303 - Caterpillar



4646303 SEAT & MOUNTING GP Caterpillar parts SEAT
Rating:
36
Alternative (cross code) number:
CA4646303
464-6303
4646303
Caterpillar 4646303 SEAT & MOUNTING GP

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Table 1
Diagnostic Trouble Code for the ECM Memory    
J1939 Code     Description     Notes    
152-2     Number Of ECU Resets : Erratic, Intermittent, or Incorrect     The software in the Electronic Control Module (ECM) has reset while the engine was running.
There may be a brief loss of electrical power.
The indicator lamps may come on for 2 seconds (lamp test).    
166-2     Engine Rated Power : Erratic, Intermittent, or Incorrect     The ECM has detected an error during a software upgrade.
If equipped, the warning lamp will come on.    
166-14     Engine Rated Power : Special Instruction     The ECM has detected a rating mismatch in the software.
If equipped, the warning lamp will flash and the shutdown lamp will come on.
The engine will be shut down. The engine will not start.    
1221-2     Continuously Monitored Systems Support/Status ; Erratic, Intermittent, or Incorrect     The ECM continuously monitors the operating conditions of the engine. If there is an irregularity that is not detected by the engine sensor diagnostics, this code will become active.
If equipped, the warning lamp will come on.    
2840-12     ECU Instance : Failure     The ECM detects that the flash file that is installed is invalid.
If equipped, the warning lamp will come on.    
Table 2
Troubleshooting Test Steps    Values    Results    
1. Check for Active or Recently Logged Diagnostic Codes
A. Connect the electronic service tool to the diagnostic connector. Refer to Troubleshooting, "Electronic Service Tools".
B. Turn the keyswitch to the ON position. If the engine will start, then run the engine.
C. Monitor the electronic service tool for active and/or recently logged diagnostic codes.
D. Turn the keyswitch to the OFF position.
   
Diagnostic codes    
Result: A 1221-2 diagnostic code is active or recently logged.
Make a note of all other active or recently logged diagnostic codes. Troubleshoot all other codes before continuing this procedure. Refer to Troubleshooting, "Diagnostic Trouble Codes".
If 1221-2 is the only active or recently logged diagnostic code, proceed to Test Step 2.
Result: A 152-2 diagnostic code is active or recently logged.
Make a note of all other active or recently logged diagnostic codes. Troubleshoot all other codes before continuing this procedure. Refer to Troubleshooting, "Diagnostic Trouble Codes".
If 152-2 is the only active or recently logged diagnostic code, proceed to Test Step 3.
Result: A 166-X or 2840-12 diagnostic code is active or recently logged.
Proceed to Test Step 4.
   
2. Clear the Diagnostic Code and Attempt to Start the Engine
A. Use the electronic service tool to clear the 1221-2 diagnostic code.
B. Turn the keyswitch to the ON position. If the engine will start, then run the engine for at least 10 minutes.
C. Operate the engine over the full duty cycle in order to replicate the conditions in which the fault occurred.
D. Stop the engine. Turn the keyswitch to the ON position.
E. Use the electronic service tool to check for an active or recently logged 1221-2 diagnostic code.
   
1221-2 diagnostic code    
Result: The 1221-2 diagnostic code is no longer active.
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