INJECTOR GP- 20R2046 - Caterpillar

Illustration 1 g00696021
Schematic of the Solenoid Valve (Torque Converter Impeller Clutch)This diagnostic code is associated with the Solenoid Valve (Torque Converter Impeller Clutch). The FMI 07 means that the ECM has determined that the solenoid is not responding. The possible causes of this diagnostic code are listed below:
The commanded pressure is less than 1000 kPa.
The measured pressure is more than 275 kPa greater than the commanded pressure.
The measured pressure is more than 275 kPa less than the commanded pressure.
The energize circuit of the solenoid is open.
The return circuit of the solenoid is open.
The solenoid has failed.
The ECM has failed. This is unlikely. Note: The following test procedure may create other diagnostic codes. Ignore these created diagnostic codes and clear these diagnostic codes when the original diagnostic code has been corrected. Ensure that the diagnostic code of CID 0678 FMI 07 is active before performing this procedure.Note: Use the 146-4080 Digital Multimeter for the measurements in this procedure.System Response:When this diagnostic code occurs, the impeller clutch will not engage. The controlled throttle shifting function is always active. The function of reduced rimpull is inoperable.Test Step 1. CHECK THE SOLENOID.
Turn the disconnect switch and the key start switch to the ON position. Do not start the engine.
Disconnect the solenoid with the active diagnostic code from the machine harness.
At the machine harness connector for the solenoid, place a jumper wire from contact B (wire H724-YL) to contact A (wire 975-WH).
Observe the status of the CID 0678 FMI 07.Expected