Control Solenoid Valve and Transmission Control Module Assembly
Input Shaft Speed/Output Shaft Speed Input Test
Special Tools
| • |
EL 35616
GM-Approved Terminal Test Kit |
| • |
EL 38522
Variable Signal Generator |
For equivalent regional tools, refer to
Special Tools .
The purpose of this test is to provide a simulated input/output
speed sensor (ISS/OSS) signal to the control solenoid valve
assembly ISS/OSS input circuits.
Transmission Input Speed Sensor
| 1. |
Ignition OFF, disconnect the
ISS wiring harness connector X3 (1) from the control solenoid valve
assembly. |
| 2. |
Ignition ON, test for 11-14
volts at terminal B. |
| 3. |
Ignition OFF, using the EL
35616 terminal test kit , connect the EL 38522
variable signal generator red lead to the ISS signal circuit
terminal A on the TCM. |
| 4. |
Connect the black lead from
the EL 38522 variable signal generator to
ground. |
| 5. |
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.
|
| 6. |
Ignition ON, verify with a
scan tool the Transmission ISS parameter is between 495-505
RPM. |
Transmission Output Speed Sensor
| 1. |
Ignition OFF, disconnect the
OSS wiring harness connector X4 (2) from the control solenoid valve
assembly. |
| 2. |
Ignition ON, test for 11-14
volts at terminal B. |
| 3. |
Ignition OFF, using the EL
35616 terminal test kit , connect the EL 38522
variable signal generator red lead to the OSS signal circuit
terminal A on the TCM. |
| 4. |
Connect the black lead from
the EL 38522 variable signal generator to
ground. |
| 5. |
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.
|
| 6. |
Ignition ON, verify with a
scan tool the Transmission OSS parameter is between 745-825
RPM. |
|
