INSTALLATION GP-TERRAIN 3890322 - Caterpillar

Illustration 1 g03015640
Schematic for the engine speed/timing sensors
Table 2
1. Determine the Diagnostic Code
A. Establish communication between the Cat ET and the ECM . Refer to Troubleshooting, "Electronic Service Tools", if necessary.
B. Start the engine. Run the engine until the engine is at normal operating temperature.
If the engine will not start, monitor the engine rpm on Cat ET while the engine is being cranked. Cat ET will need to be powered from another battery while the engine is being cranked, if battery voltage is low.
C. Observe the "Active Diagnostic" screen on Cat ET. Wait at least 30 seconds so that any codes may become active.
D. Look for these codes on Cat ET:
190-8
342-8
261-11
Diagnostic code
Result: Engine rpm is not indicated on Cat ET.
Proceed to Test Step 2.
Result: There is an active or a logged 190-08 or 342-8 diagnostic code.
Proceed to Test Step 4.
Result: There is an active or a logged 261-11 diagnostic code.
The wires from one of the engine speed/timing sensors are connected to the wrong terminals on the P2 connector. Repair the wiring. Verify that the problem is resolved.
Result: There is not an active or a logged diagnostic code.
Refer to the appropriate symptoms in Troubleshooting, "Symptom Troubleshooting".
2. Check the Installation of the Sensor Assembly
A. Turn the keyswitch to the OFF position.
B. Visually inspect the sensor assembly without removing the sensor assembly from the engine. The flange must be flush against engine in order to ensure proper operation.
Inspect the bracket. Verify that the bracket allows the flanges to be flush against the engine.
Verify that the bracket is not bent. If the bracket is bent or if an obstruction is preventing the sensor assembly from being installed correctly, the engine will not start.
C. Remove the sensor assembly from the engine.
D. Ensure that one O-ring is installed on each sensor. Check the O-rings for damage. Replace the O-rings, if necessary
Sensor installation
Result: The sensor assembly components are OK.
Perform the following procedure in order to install the sensor assembly:
Lubricate each O-ring with engine oil.
Fully seat the sensor assembly in the engine.
If the sensor assembly will not fully seat into the engine, replace the sensor assembly.
Tighten the bracket bolt.
Connect the sensors electrical connectors. Verify that the connectors are latched on both sides.
Ensure that the harness is properly secured, and that the tie-wraps are placed in the correct location.
Proceed to Test Step 3.
Result: The sensor assembly components are not OK.
Obtain a new sensor assembly. Perform the following procedure in order to install the sensor assembly:
Lubricate each O-ring with engine oil.
Fully seat the sensor assembly in the engine.
If the sensor assembly will not fully seat into the engine, replace the sensor assembly.
Tighten the bracket bolt.
Connect the sensors electrical connectors. Verify that the connectors are latched on both sides.
Ensure that the harness is properly secured, and that the tie-wraps are placed in the correct location.
Verify that the problem is resolved.
3. Inspect the Electrical Connectors and the Wiring
A. Thoroughly inspect the connectors for the ECM and sensors. Refer to Troubleshooting, "Electrical Connectors - Inspect".
B. Perform a 45 N (10 lb) pull