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CAB AR 2278345 - Caterpillar



2278345 CAB AR Caterpillar parts 637G CAB
Rating:
18
Alternative (cross code) number:
CA2278345
227-8345
2278345
Caterpillar 2278345 CAB AR

Buy CAB AR 2278345 Caterpillar genuine, new aftermarket tractor parts with delivery
WHEEL TRACTOR,

Compatible equipment models: 2278345:

WHEEL TRACTOR  637G   Caterpillar
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Table 2
Troubleshooting Test Steps Values Results
1. Verify All Active and Recently Logged Diagnostic Codes
A. Turn the keyswitch to the ON position. Wait at least 10 seconds for activation of the diagnostic codes.
B. Verify if any of the diagnostic codes that are listed in Table 1 are active or recently logged.
Diagnostic codes
Result: None of the preceding diagnostic codes are active or recently logged.
The fault may be intermittent. Refer to Troubleshooting, "Electrical Connectors - Inspect" in order to identify intermittent faults.
Result: One or more of the preceding diagnostic codes are active or recently logged.
Proceed to Test Step 2.
2. Inspect Electrical Connectors And Wiring
A. Thoroughly inspect the terminal connections on the P2/J2 ECM connectors.
B. Thoroughly inspect the connectors for the valves.
C. Refer to Troubleshooting, "Electrical Connectors - Inspect".
D. Perform a 30 N (6.7 lb) pull test on each of the wires in the ECM connector and the valve connectors that are associated with the active diagnostic code.
E. Check the harness for abrasions and for pinch points from the valves back to the ECM.
Damaged wire or connector
Result: A damaged wire or damaged connector was found.
Repair the damaged wire or the damaged connector.
Use the electronic service tool to clear all logged diagnostic codes. Verify that the repair eliminates the fault.
Result: All connectors, pins, and sockets are correctly connected and/or inserted and the harness is free of corrosion, of abrasion or of pinch points.
Proceed to Test Step 3.
3. Measure the Sensor Supply Voltage at the Valve Connector
A. Turn the keyswitch to the OFF position.
B. Disconnect the suspect valve from the engine harness.
C. Turn the keyswitch to the ON position.
D. Measure the voltage at the harness connector for the valve from the 5 VDC supply terminal of the position sensor to the sensor ground terminal.
4.9 v to 5.1 V
Result: The measured voltage is not within the expected range.
The fault is in the wiring between the suspect valve and the ECM P2 connector.
Check all wiring between the suspect valve and the ECM. Refer to the appropriate Electrical Schematic.
Replace the suspect wiring.
Use the electronic service tool to clear all logged diagnostic codes and verify that the repair eliminates the fault.
Result: The measured voltage is within the expected range.
Proceed to Test Step 4.
4. Verify the Type of Active Diagnostic Code
A. Turn the keyswitch to the ON position. Wait at least 10 seconds for activation of the diagnostic codes.
B. Use the electronic service tool to check for active diagnostic codes. Record all active diagnostic codes.
Diagnostic codes
Result: An XX-4 diagnostic code is active at this time.
Proceed to Test Step 5.
Result: An XX-3 diagnostic code is active at this time.
Proceed to Test Step 7.
5. Create an Open Circuit at the Valve Connector
A. Turn the keyswitch to the OFF position.
B. Disconnect the connector for the valve with the XX-4 diagnostic code.
C. Turn the keyswitch to the ON position. Wait for at least 10 seconds for activation of the diagnostic codes.
D. Use the electronic service tool to check the "Active Diagnostic Code" screen. Check for an XX-3 diagnostic code.
Note: Diagnostic codes for all

Caterpillar SIS machinery equipment:

Caterpillar SIS

Caterpillar parts catalog:

Caterpillar parts catalog
637G Wheel Tractor DFJ00001-UP (MACHINE)


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