Test H: The Speed Control Actuator Does Not Respond To The Diagnostic Tool

PINPOINT TEST H: THE SPEED CONTROL ACTUATOR DOES NOT RESPOND TO THE DIAGNOSTIC TOOL

H1-H3:

Normal Operation
The speed control actuator communicates with the diagnostic tool through the standard corporate protocol (SCP) communication network, circuits 914 (TN/OG) and 915 (PK/LB). Check circuits 914 (TN/OG) and 915 (PK/LB) between the speed control actuator C122 and the data link connector (DLC) C251. The total resistance values must not be more than 5 ohms. If the resistance is more than 5 ohms, there is an open circuit in the SCP network, damage to the DLC C251, damage to the speed control actuator C122, or a problem in the in-line connector.

Possible Causes
- SCP circuits 914 (TN/OG) or 915 (PK/LB) open
- speed control actuator C122
- speed control actuator