818889A 1 Mariner ROLLER BEARING ASSEMBLY

Illustration 1 g00993377
Schematic for the analog sensorsTest Step 1. Inspect the Electrical Connectors and Wiring
Set the engine control to the OFF/RESET mode. Switch the 16 amp circuit breaker OFF.Note: For the following steps, refer to Troubleshooting, "Inspecting Electrical Connectors".
Illustration 2 g00889286
Terminal box for the master ECM (1) J1/P1 connectors for the master ECM (2) J12/P12 connectors for the analog sensors (3) 16 amp circuit breaker
Thoroughly inspect the following connectors:
Master ECM J1/P1 connectors
J12/P12 connectors on the terminal box
Check the torque of the Allen head screw for the ECM connector. The proper torque is 6 1 N m (55 9 lb in).
Illustration 3 g00993379
Harness side of the master ECM P1 connector (P1-2) 5 volt supply (P1-3) Return (P1-14) Signal for the inlet manifold air temperature (P1-17) Signal for the engine oil temperature (P1-24) Signal for the filtered engine oil pressure (P1-26) Signal for the unfiltered engine oil pressure (P1-27) Signal for the engine coolant temperature
Illustration 4 g00889763
Harness side of the P12 connector (P12-A) 5 volt supply (P12-C) Return (P12-K) Signal for the inlet manifold air temperature (P12-H) Signal for the engine oil temperature (P12-F) Signal for the filtered engine oil pressure (P12-E) Signal for the unfiltered engine oil pressure (P12-J) Signal for the engine coolant temperature
Perform a 45 N (10 lb) pull test on each of the wires that are associated with the circuit for the analog sensors.
Illustration 5 g01022103
(4) Inlet air temperature sensor (5) Engine coolant temperature sensor
Illustration 6 g00901959
(6) Unfiltered oil pressure sensor (7) Filtered oil pressure sensor (8) Oil temperature sensor
Check the harness and wiring for abrasion and pinch points from the analog sensors to the master ECM.Expected Result:All connectors, pins, and sockets are connected properly. The connectors and the wiring do not have corrosion, abrasion, or pinch points.Results:
OK - All connectors, pins, and sockets are connected properly. The connectors and the wiring do not have corrosion, abrasion, or pinch points. The components are in good condition with proper connections. Proceed to Test Step 2.
Not OK - At least one of the connectors, pins, and/or sockets are not connected properly. At least one of the connectors and/or the wiring has corrosion, abrasion, or pinch points.Repair: Perform the necessary repairs and/or replace parts, if necessary.STOPTest Step 2. Check for Diagnostic Codes for the Power Supply
Connect Cat ET to the service tool connector. Refer to Troubleshooting, "Electronic Service Tools".
Switch the 16 amp circuit breaker ON. Set the engine control to the STOP mode.
Observe the "Active Diagnostic" screen on ET. Allow a minimum of 30 seconds for any codes to activate. Look for these codes:
262-03 5 Volt Sensor DC Power Supply short to +batt
262-04 5 Volt Sensor DC Power Supply short to groundExpected Result:There are no active "5 Volt Sensor DC Power Supply" diagnostic codes.Results:
No codes - There are no active "5 Volt Sensor DC Power Supply" diagnostic codes. Proceed to Test Step 3.
Active code - There is an active "5 Volt Sensor DC Power Supply" diagnostic code. This procedure will not work when this type of code is active.Repair: Refer to Troubleshooting, "+5V Sensor Supply".If necessary, return to this functional test in order to troubleshoot the analog sensor after the "+5 V Sensor Supply" diagnostic code has been resolved.STOPTest Step 3. Check for Active Analog Sensor Diagnostic Codes
Observe the "Active Diagnostic" screen on Cat ET. Wait at least 30 seconds so that any codes may become activated. Look for the codes that are listed in Table 1:
Table 1
Analog Sensor Diagnostic Codes    
100-03     Engine Oil Pressure open/short to +batt    
100-04     Engine Oil Pressure short to ground    
110-03     Engine Coolant Temperature open/short to +batt    
110-04     Engine Coolant Temperature short to ground    
172-03     Intake Manifold Air Temp open/short to +batt    
172-04     Intake Manifold Air Temp short to ground    
175-03     Engine Oil Temperature open/short to +batt    
175-04     Engine Oil Temperature short to ground    
542-03