3T5-10098-0 Tohatsu VALVE

Illustration 1 g00996218
Status indicator for the fuel metering valveThe fuel metering valve contains a status indicator. The indicator flashes in order to indicate the status of the valve. The color of the indicator indicates the severity of the problem. During operation, the status indicator will flash one of the following colors:Green - Normal operationOrange - The valve has detected a problem and the valve continues to operate.Red - The valve has detected a serious problem. The valve has shut down.The flash code indicates the particular error that has been detected by the valve. Before performing maintenance on the valve, observe the status indicator. Refer to Installation and Operation Manual, SEBU7630 for additional information.
Illustration 2 g00997524
Schematic for the circuit of the fuel metering valveTest 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 3 g00996091
Terminal box for the master ECM (1) J1/P1 connectors for the master ECM (2) J16/P16 connectors for the fuel metering valve (3) 16 amp circuit breaker
Thoroughly inspect each of the following connectors:
Master ECM J1/P1 connectors
J16/P16 connectors for the fuel metering valve
Check the torque of the Allen head screw for the ECM connectors. The proper torque is 6 1 N m (55 9 lb in).
Illustration 4 g00996094
Harness side of the ECM P1 connector (P1-34) CAN data link − (P1-42) CAN shield (P1-50) CAN data link + (P1-58) PWM signal for the fuel flow (P1-60) Return (P1-63) −Battery (P1-65) −Battery (P1-67) −Battery (P1-69) −Battery
Illustration 5 g00903246
Harness side of the P16 connector (P16-A) Switched +battery (P16-B) CAN data link + (P16-C) CAN data link − (P16-D) CAN shield (P16-E) PWM signal for the fuel flow (P16-F) Return (P16-H) −Battery (P16-J) Unswitched +battery
Illustration 6 g00903247
Harness side of the P24 connector (P24-C) CAN data link + (P24-F) CAN data link − (P24-K) Unswitched +battery (P24-L) −Battery (P24-M) Switched +battery (P24-P) Jumper wire for the terminating resistor for the CAN data link (P24-R) Jumper wire for the terminating resistor for the CAN data link (P24-S) PWM signal for the fuel flow (P24-T) Return
Perform a 45 N (10 lb) pull test on each of the wires that are associated with the fuel metering valve.
Illustration 7 g00904218
(4) P24/J24 connectors for the fuel metering valve (5) Fuel metering valve
Check the wiring for abrasion and for pinch points from the fuel metering valve to the master ECM.Expected Result:All of the connectors, pins, and sockets are connected properly. The connectors and the wiring do not have corrosion, abrasion, or pinch points.Results:
OK - The components are in good condition with proper connections. Proceed to Test Step 2.
Not OK - The components are not in good condition and/or at least one connection is improper.Repair: Perform the necessary repairs and/or replace parts, if necessary. Ensure that all of the seals are properly installed. Ensure that the connectors are properly engaged. Verify that the repair has eliminated the original problem.STOPTest Step 2. Check for Diagnostic Codes
Connect the Caterpillar Electronic Technician (ET) to service tool connector J23.
Switch the 16 amp circuit breaker ON. Set the engine control to the STOP mode.
Use Cat ET to determine if any of the following diagnostic codes are active:
1446-05 "Fuel Metering Module open circuit"
1446-09 "Unable to communicate with Fuel Metering Module"
1446-12 "Fuel Metering Module malfunction"
1446-13 "Fuel Metering Module calibration required"
1447-12 "Fuel Metering Sensor Module malfunction"Expected Result:There are no active diagnostic codes.Results:
OK - There are no active diagnostic codes. The signal and the communication between the master ECM and the fuel metering valve appear to be OK at this time. However, diagnostic codes may be logged.Repair: If you are troubleshooting an intermittent problem, refer to Troub