HOSE AS 4606735 - Caterpillar

Illustration 2 g03679427
P1 ECM connector (P1-5) Digital return (P1-23) E-Stop 1 (P1-40) Run/Stop 1 (P1-48) +Battery (P1-52) +Battery (P1-53) +Battery (P1-54) Run/Stop 2 (P1-55) +Battery (P1-56) E-Stop 2 Momentary Stop (P1-57) +Battery (P1-61) −Battery (P1-63) −Battery (P1-65) −Battery (P1-67) −Battery (P1-69) −Battery (P1-70) Keyswitch
Illustration 3 g03679436
Customer connector (Terminal E) Digital return (Terminal U) Soft E-Stop 1 (Terminal Z) Soft E-Stop 1 (Terminal _A) Soft E-Stop2 (Terminal AA) Start/Run/Stop 1 (Terminal AB) Start/Run/Stop 2 (Terminal AC) Auxiliary Power 1 + (Terminal AH) Auxiliary Power 1 + (Terminal AJ) Auxiliary Power 2 + (Terminal AL) Auxiliary Power 2 + (Terminal AT) Auxiliary Power 1 − (Terminal AV) Auxiliary Power 1 − (Terminal AX) Auxiliary Power 2 − (Terminal AZ) Auxiliary Power 2 − (Terminal BC) Keyswitch
Illustration 4 g03679582
Power interface connector 1 (37 pin connector) (Terminal 16) Auxiliary 2 − Battery (Terminal 17) Auxiliary 2 − Battery
Illustration 5 g03679583
Power interface connector 2 (25 pin connector) (Terminal 3) + Battery (Terminal 4) + Battery (Terminal 21) Hard Emergency Stop
Table 2
Troubleshooting Test Steps    Values    Results    
1. Inspect the Electrical Connectors and the Wiring
A. Turn the main disconnect switch to the OFF position.
B. Thoroughly inspect the ECM connectors. Also, inspect the connectors at the air shutoff mechanism that are for the solenoids. Also, inspect the switches for the air shutoff. Refer to Troubleshooting, "Electrical Connectors - Inspect"
C. Perform a
45 N (10 lb) pull test on each of the wires that are associated with the e-top circuit.
D. Check the allen head screw on each ECM connector for the proper torque. Refer to the diagnostic functional test Troubleshooting, "Electrical Connectors - Inspect" for the correct torque values.
E. Check the harness and the wiring for abrasion and for pinch points from the air shutoff solenoid to the ECM.
   
Connectors    
Result: The connectors and wiring appear to be OK.
Proceed to Test Step 2.
Result: The connectors and/or wiring are NOT OK.
Repair: Repair the wiring and/or the connectors. Replace parts, if necessary. Ensure that all of the seals are properly in place and ensure that the connectors are coupled.
Verify that the repair eliminated the problem.
   
2. Check for Active Codes or Logged Codes
A. Connect Cat ET to the service tool connector.
B. Restore the electrical power to the ECM.
C. Start Cat ET.
D. Check for an active code.
Note: Wait at least 30 seconds in order for diagnostic codes to become active.
F. Restore the wiring to the original configuration.
   
Codes    
Result: A code is active or logged.
Repair: The wires between the ECM and the remote E-stop are in opposite states.
Proceed to Test Step 3.
Result: A code is not active or logged.
Proceed to Test Step 4.
   
3. Check for an Open Circuit
A. Disconnect the J1/P1 ECM connector.
B. Measure the resistance between P1-23 at the ECM connector and terminal 2 at the emergency stop switch.
C. Measure the resistance between P1-56 at the ECM connector and terminal 2 at the emergency stop switch.
   
Open Circuit    
Result: The measurements do not