Test Y

PINPOINT TEST Y: THE TRANSMISSION MALFUNCTION INDICATOR IS NEVER/ALWAYS ON

Test Y1-Y4:

Normal Operation
The PCM monitors and controls the transmission functions. When a transmission concern is detected, the PCM provides a signal to the instrument cluster over the SCP communication network, circuits 914 (TN/OG) and 915 (PK/LB), and the instrument cluster illuminates the transmission indicator lamp.

Possible Causes
- PCM
- instrument cluster