Test B: The Boost Gauge Is Inoperative (GT 500 Only)

PINPOINT TEST B: THE BOOST GAUGE IS INOPERATIVE (GT 500 ONLY)

B1-B4:

Normal Operation
The boost gauge measures the amount of engine boost provided by the supercharger in pounds per square inch (PSI). The instrument cluster receives the boost gauge data from the powertrain control module (PCM) over the high speed controller area network (CAN) communication bus lines. If the boost gauge status message is invalid or missing for more than 5 seconds, the boost gauge indication is zero. If the message is invalid or missing for less than 5 seconds, the boost gauge displays the last valid data received. The missing or invalid data may make the gauge appear sluggish or unresponsive to engine boost changes.

Possible Causes
- PCM
- Instrument cluster