SHUTOFF GP-ELECTRICAL 7C1309 - Caterpillar

SIZE="-1">Illustration 1 g03679141
Illustration 2 g03325748
P1 ECM connector (P1-40) Run/Stop 1 (P1-54) Run/Stop 2
Illustration 3 g03393083
P2 ECM connector (92) Digital return
Illustration 4 g03679162
P1 ECM connector (AA) Start/Run/Stop 1 (AB) Start/Run/Stop 2 (BC) Keyswitch
Table 2
1. Inspect the Electrical Connectors and Wiring
A. Turn the main disconnect switch to the OFF position.
B. Thoroughly inspect the connectors for the stop switches and the J1/P1 ECM connector.
a. Check for a loose connection or check for poor connections at the connector for the stop switches.
b. Check connections between the stop switches and the ECM.
Refer to Troubleshooting, "Electrical Connectors - Inspect" for information related to inspecting the electrical connectors and wiring.
C. Perform a
45 N (10 lb) pull test on each of the wires that are associated with the circuit for the stop switches.
D. Check the allen head screw for each of the ECM connectors for the proper torque.
Refer to Troubleshooting, "Electrical Connectors - Inspect" for the correct torque values.
E. Check the harness and wiring for abrasion and for pinch points from the stop switches to the ECM.
   
Connectors and Wiring
    Result: The connectors and the wiring appear to be OK.
Proceed to Test Step 2.
Result: There is a problem in the connectors and/or the wiring.
Repair: Repair the connectors or the wiring. Ensure that all of the seals for the connectors are properly in place and ensure that the connectors are coupled.
Verify that the repair eliminated the problem.
   
2. Check the Status of the Switch-on Caterpillar Electronic Technician (ET)
A. Connect Caterpillar Electronic Technician (ET) to the service tool connector.
B. Restore the electrical power to the ECM.
C. Monitor the status of the start/run/stop switch-on Cat ET.
D. Turn the start/run/stop switch to the STOP position.
E. Turn the start/run/stop switch to the START position.
F. Turn the start/run/stop switch to the STOP position.
   
ECS Status
    Result: The status for the switch is correct in both the START and STOP positions. A diagnostic code for the switch is not active.
Repair: The switch appears to be operating correctly. There may be an intermittent problem in the harness or in a connector.
For information related to identifying intermittent electrical problems, refer to Troubleshooting, "Electrical Connectors - Inspect".
Verify that the repair eliminated the problem.
Result: The parameter for the switch is not correct in either the STOP or the START positions.
Proceed to Test Step 3.
   
3. Check the