Test L: The Safety Belt Warning Indicator Is Never/Always On

PINPOINT TEST L: THE SAFETY BELT WARNING INDICATOR IS NEVER/ALWAYS ON

Normal Operation
The safety belt switch is hardwired to the restraints control module (RCM). The RCM monitors the safety belt position through the safety belt buckle switch and communicates the safety belt status to the instrument cluster (IC) over the HS-CAN. When the safety belt is buckled, the RCM receives a ground signal and sends a message to the instrument cluster (IC) to turn off the safety belt warning indicator. When the safety belt is unbuckled, the ground to the RCM is removed and the RCM sends a message to the instrument cluster (IC) to illuminate the safety belt warning indicator.

This pinpoint test is intended to diagnose the following:
- RCM
- Instrument cluster (IC)

L1-L3:

L4: