GUARD GP-BELT 4527722 - Caterpillar

Illustration 2 g03721884
View of the pin locations on the P1 connector for the DEF tank header unit.
(23) CAN 2 +
(45) CAN 2 -
Illustration 3 g03722336
View of the connector for the DEF tank header unit
(1) CAN C -
(2) CAN C +
(3) Ground
(4) Battery +
Table 2
Troubleshooting Test Steps Values Results
1. Inspect Electrical Connectors and Wiring
A. Check the fuses.
B. Inspect the P1/J1 ECM connectors.
C. Inspect the connector for the DEF tank header unit.
D. Perform a 30 N (6.7 lb) pull test on each of the wires in the ECM connector and the connector for the DEF tank header unit.
E. Check all of the wiring associated with the DEF tank header unit for abrasions and pinch points.
Damaged wire or connector
Result: A damaged wire or damaged connector was not found. The fuses are OK
Proceed to Test Step 2.
Result: A damaged wire or damaged connector was found. A fuse is blown.
Repair: Repair the damaged wire or the damaged connector. Replace any blown fuses.
Use the electronic service tool to clear all logged diagnostic codes. Verify that the repair eliminates the fault.
2. 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. Look for active or logged diagnostic codes.
Diagnostic Trouble Codes
Result: One or more of the diagnostic codes listed in Table 1 is active.
Proceed to Test Step 3.
Result: There is an active diagnostic code relating to the CAN data link.
Repair: Refer to Troubleshooting, "CAN Data Link - Test" before returning to this procedure.
Result: One or more of the diagnostic codes listed in Table 1 is recently logged.
Repair: There may be an intermittent fault. Refer to Troubleshooting, "Electrical Connector - Inspect" in order to identify intermittent faults.
3. Check the Power Supply to the Auxiliary Main Relay
A. Turn the keyswitch to the OFF position.
B. Disconnect the auxiliary main relay.
C. Turn the keyswitch to the ON position.
D.