Boost Gauge Inoperative
- Using a voltmeter, check for 11-13 volts on Black/Yellow wire at boost sensor 4-pin connector. See Fig 1 . Boost valve connector is located at turbo boost sensor near center of firewall.
- Observe voltmeter reading. If voltmeter reads 11-13 volts, go to BOOST SENSOR OUTPUT CHECK 1 . If voltage is not between 11-13 volts, repair Black/Yellow wire between boost sensor and fuse panel.