Test Procedure

Ignition OFF, remove the control valve body cover. Refer to Control Valve Body Cover Removal .
Connect the control solenoid assembly X1 harness connector.
Ignition OFF, disconnect the OSS wiring harness connector X4 (1) from the control solenoid valve assembly.
Ignition ON, test for 8.3-9.3 volts at terminal A.
- If not within the specified range, replace the control solenoid valve assembly.
Ignition OFF, using the EL 35616: terminal test kit, connect the EL 38522: variable signal generator red lead to the OSS signal circuit terminal B on the TCM.
Connect the black lead from the EL 38522: variable signal generator to ground.
Set the EL 38522: variable signal generator to 5 volts, the frequency to 300 Hz, and the percent duty cycle to 50 or the normal position.
Ignition ON, verify with a scan tool the Transmission OSS parameter is between 256-266 RPM.
- If not within the specified range, replace the Q8 control solenoid valve assembly. Refer to Control Solenoid Valve and Transmission Control Module Assembly Replacement .
Test the output speed sensor harness for an open, short to ground or short to voltage.
- If all circuits test normal, test or replace the B14A Transmission Output Shaft Speed Sensor.