HOUSING-GEAR 1218062 - Caterpillar

Check the torque of the allen head screws for the ECM connectors.
Perform a 45 N (10 lb) pull test on each of the wires that are associated with the circuit for the analog sensors.
Check the harness and wiring for abrasion and for pinch points from the analog sensors to the ECM.Expected Result:All connectors, pins, and sockets are completely inserted and coupled. The harness and wiring are free of corrosion, of abrasion, and of pinch points. All connections and grounds are tight and free of corrosion.Results:
OK - The connectors and wiring appear to be OK. Proceed to Test Step 2.
Not OK - The connectors and/or wiring are not OK.Repair: Perform the necessary repairs and/or replace parts, if necessary. Refer to Troubleshooting, "Electrical Connectors - Inspect".STOPTest Step 2. Check for "Active" or for "Logged" Diagnostic Codes
Connect Caterpillar Electronic Technician (ET) to the service tool connector.
Restore electrical power to the ECM.
Monitor the diagnostic codes on Cat ET. Check and record any diagnostic codes.Note: Wait at least 30 seconds in order for the diagnostic codes to become active.
Determine if a diagnostic code has occurred several times.Note: A diagnostic code that is logged several times is an indication of an intermittent problem. Most intermittent problems are the result of a bad connection between a socket and a pin in a connector or a bad connection between a wire and a terminal. The problem may be caused by moisture, corrosion, or wear.
Determine if the problem is active and related to one of the following diagnostic codes:
-3
-4Expected Result:A diagnostic code is not active.Results:
OK - A diagnostic code is not active.Repair: The problem may be intermittent. If the problem is intermittent, refer to Troubleshooting, "Electrical Connectors - Inspect".STOP
Not OK - A -3 code or a -4 code is active. Proceed to Test Step 3.Test Step 3. Check the 5 Volt Supply Voltage at the Sensor Connector
Do not disconnect the connector for the suspect sensors(s).
Connect a voltmeter between pin A and pin B on the sensor side of the connector for the suspect sensor.
Measure the voltage between pin A and pin B for the suspect sensor(s).
Wiggle the harness while you monitor the voltage on the voltmeter. Perform the 45 N (10 lb) pull test on each wire in the circuit. Each terminal and each connector should easily withstand 45 N (10 lb) of tension and each wire should remain in the connector body. This test checks whether the wire was properly crimped in the terminal and whether the terminal was properly inserted into the connector.Expected Result:The supply voltage is approximately 5.0 0.5 VDC.Results:
OK - The supply voltage is approximately 5.0 0.5 VDC. An active -3 diagnostic code is present. Proceed to Test Step 4.
OK - The supply voltage is approximately 5.0 0.5 VDC. An active -4 diagnostic code is present. Proceed to Test Step 6.
Not OK - The supply voltage is not approximately 5.0 0.5 VDC.Repair: There is an open in the wiring or connectors between the suspect sensor(s) and the ECM. Inspect

Parts housing Caterpillar catalog:

1125540 HOUSING AS
206, 212, 3054, 3054B, 3056, 307, 312, 312B L, 312C, 315, 315B L, 317, 416, 416B, 416C, 416D, 420D, 424D, 426, 426B, 426C, 428, 428B, 428C, 428D, 430D, 432D, 436C, 438B, 438C, 438D, 442D, 554, 908, 91...

1496932 HOUSING
3054, 3056, 307, 312, 315, 317, 416B, 416C, 426C, 428B, 428C, 436C, 438C, 914G, AP-800C, BG-225B, CB-434B, CB-434C, CB-534B, CB-534C, CB-535B, CB-544, CB-545, CP-433C, CS-323C, CS-431C, IT14G, M312, M...

2099218 HOUSING AS
3054, 3054B, 3056, 3056E, 312B L, 312C, 315B L, 317, 416C, 416D, 420D, 424D, 426C, 428C, 428D, 430D, 432D, 436C, 438C, 438D, 442D, 550B, 554, 560B, 564, 574B, 908, 914G, 924G, 924GZ, 930G, AP-655C, AP...

1328239 HOUSING AS
3054, 3054B, 3056, 3056E, 307, 312, 312B L, 312C, 315, 315B L, 317, 554, 564, 574B, 914G, AP-800C, BG-225B, BG-225C, CB-434B, CB-434C, CB-534B, CB-534C, CB-535B, CB-544, CB-545, CP-433C, CP-433E, CS-4...

2836613 HOUSING
3054, 3056, 307, 312, 315, 317, 416B, 416C, 426C, 428B, 428C, 436C, 438C, AP-800C, BG-225B, CB-434B, CB-534B, CB-535B, CB-544, CB-545, CP-433C, CS-323C, CS-431C, M312, M315, PS-200B, TH62, TH63, TH82,...

2168632 HOUSING-FRONT
3054, 3056, 3056E, 312C, 554, 924G, 924GZ, 930G, AP-655C, BB-760, CB-434C, CB-534C, CB-535B, CP-433C, CP-433E, CP-573E, CP-663E, CS-323C, CS-431C, CS-433C, CS-563E, CS-583E, CS-663E, CS-683E, IT28G, M...

1328238 HOUSING AS
3054, 3054B, 3056, 3056E, 416C, 416D, 420D, 424D, 426C, 428C, 428D, 430D, 432D, 436C, 438C, 438D, 442D, 554, BB-760, CP-433C, CS-323C, CS-431C, PS-150B

2334268 HOUSING-FRONT
3054, 3054B, 3056, 312B L, 315B L, 416C, 416D, 420D, 424D, 426C, 428C, 428D, 430D, 432D, 436C, 438C, 438D, 442D, 554, 908, AP-800C, BG-225B, BG-225C, CS-423E, M312, M315

2346862 HOUSING AS
3054, 3054B, 3056, 3056E, 312B L, 312C, 315B L, 416C, 416D, 420D, 426C, 428C, 428D, 430D, 432D, 436C, 438C, 442D, 554, 908, 924G, 924GZ, 930G, AP-655C, BB-760, BG-225C, CB-434C, CB-534C, CB-535B, CP-4...

2327449 HOUSING AS
3054C, 3054E, 312D2, 312D2 GC, 312D2 L, 312E, 312E L, 313D2, 313D2 LGP, 314E CR, 314E LCR, 315C, 316E L, 318D2 L, 318E L, 320D2, 320D2 GC, 320D2 L, 323D2 L, 414E, 416D, 416E, 416F, 420D, 420E, 420F, 4...

3E7858 HOUSING AS
120H, 120H ES, 120H NA, 120K, 120K 2, 12K, 135H, 135H NA, 140G, 140K, 140K 2, 160K, 214B, 3116, 3126, 3126B, 3126E, 320B, 322B L, 322B LN, 322C, 322C FM, 324D, 324D FM, 324D FM LL, 324D L, 324D LN, 32...