Circuit/System Testing
- Ignition OFF, remove the control valve body cover. Refer to CONTROL VALVE BODY COVER REPLACEMENT .
- Connect the TCM harness connector.
- Disconnect the input speed sensor (ISS) from the control solenoid (w/body and TCM) valve assembly.
- Connect the J 38522 between the supply voltage terminal B and ISS signal terminal A at the control solenoid (w/body and TCM) valve assembly. Refer to CONTROL SOLENOID VALVE AND TRANSMISSION CONTROL MODULE ASSEMBLY INPUT SHAFT SPEED/OUTPUT SHAFT SPEED INPUT TEST for further instructions.
- Set the J 38522 signal to 8 volts, the frequency to 120 and the percent duty cycle to 50.
- Ignition ON, observe the scan tool Transmission ISS parameter. The scan tool Transmission ISS parameter should be between 100-400 RPM.
- If not within the specified range, replace the control solenoid (w/body and TCM) valve assembly.
- If all circuits test normal, test or replace the input speed sensor.