HOSE ASSEM. .55m (21.65 in.) 5V7683 - Caterpillar

Table 2
Troubleshooting Test Steps Values Results
1. Check for Codes
A. Connect Cat® Electronic Technician (ET) to the service tool connector.
B. Start the engine.
C. Run the engine until normal operating temperature is reached.
Note: If the engine will not start, monitor the engine rpm on Cat ET when the engine is being cranked. If necessary, power Cat ET from another battery when the engine is being cranked.
D. Look for these codes and pattern status parameters on Cat ET:
Codes:
• 636-2
• 636-8
• 637-2
• 637-9
Parameters:
• "Engine Speed"
•"Engine Speed Secondary Sensor"
Note: When checking status parameters, engine must be in a cranking state.
Codes
Result: None of the diagnostic codes that are listed above are active or logged and the engine speed is detected.
Repair: If the diagnostic codes that are listed above are not active or logged as well as the "Engine Speed and Secondary Engine Speed" sensor feedback status is showing a valid speed signal and the engine is not running properly, refer to the appropriate engine symptom in this Troubleshooting Manual.
Result: If a 636-2 or a 637-2 code is active or logged.
Proceed to Test Step 2.
Result: Codes 636-8 or 637-9 code is active and no engine rpm is detected. Cat ET is not reporting engine rpm for at least one engine speed/timing sensor while the engine is cranked.
Proceed to Test Step 3.
2. Check the Installation of the Sensor Assembly
A. Turn the