Control Solenoid Valve and Transmission Control Module Assembly Solenoid Performance Test: Notes

Special Tools 

• DT-47825-100 Control Solenoid Test Kit
• DT-47825-20 Adapter Harness

Fig 1: Identifying DT-47825-100 Control Solenoid Test Kit And DT-47825-20 Adapter Harness

Courtesy of SUZUKI OF AMERICA CORP.

The purpose of this procedure is to test the functionality of the control solenoid (w/body and TCM) valve assembly solenoids for a gross stuck open or stuck closed condition. The DT-47825-100 test block is bolted to the control solenoid (w/body and TCM) valve assembly on the valve body mounting surface. Pressurized air is passed into the aluminum test block, through the control solenoid (w/body and TCM) valve assembly solenoid passage and back to a pressure gage on the test block. The pressure gage indicates open if air pressure is passed through the solenoid, or closed if the solenoid is unable to pass air through. A scan tool is used to command the solenoids ON and OFF. While watching the pressure gage, one can determine the valve functionality. The recommended shop air pressure for this test is 90-100 psi.

1. Remove the control solenoid (w/body and TCM) valve assembly from the transmission.
2. Bolt the DT-47825-100 test block to the control solenoid (w/body and TCM) valve assembly on the valve body mounting surface. Use the bolts and washers supplied with the tool to attach the test block. Tighten the bolts to 5 N.m (44 lb in) using a center out alternating torque sequence.
3. Install the pressure gage to the affected solenoid air port. Reference component to air port table.
4. Connect the shop air pressure line to the DT-47825-100 test block air psi inlet port.
5. Connect DT-47825-20 to vehicle and control solenoid (w/body and TCM) valve assembly.
   Fig 2: Connecting Shop Air Pressure Line To DT-47825-100 Test Block Air Psi Inlet Port

   Courtesy of SUZUKI OF AMERICA CORP.
   CAUTION: Do not energize the solenoids for more than two minutes or the solenoids could be damaged.
6. Ignition ON, with a scan tool command the solenoid in question On and Off. Watch the air pressure gage and look for the change in pressure as you command the valve On and Off. The valve should allow air pressure to flow through the valve port to the gage with a result of pressure reading on the gage. If the valve is stuck closed, no pressure change will occur. Command the solenoid valve On and Off several times to determine the state of the solenoid valve in question. Release the air pressure in the gage between pressurization tests.