Special Tools
| • | J 35616
GM-Approved Terminal Test Kit |
| • | J 38522
Variable Signal Generator |
The purpose of this test is to provide a simulated input/output speed sensor (ISS/OSS) signal to the control solenoid (w/body and TCM) valve assembly ISS/OSS input circuits.
- Disconnect the ISS/OSS wiring harness connector from the control solenoid (w/body and TCM) valve assembly.
- Using the
J 35616
, connect the
J 38522
to the affected ISS or OSS signal circuit on the control solenoid (w/body and TCM) valve assembly.
| 2.1. | Set the
J 38522
Signal to 8 volts, the Frequency to 120 and the Percent Duty Cycle to 50. |
| 2.2. | Ignition On, observe either the scan tool parameter ISS Signal or OSS Signal. |
| 2.3. | The signal parameter should display between 100-400 RPM. |
| ⇒ | If the signal display is not in this range, the control solenoid (w/body and TCM) valve assembly is not reading the input signal correctly and is faulty. |
