Std boost gauge problems

[MARK@CMBAUTOS]

Hi folks iv got a customers gt in for a little work and his std boost gauge ain't working on the dash all map sensor pipes etc are all correct
Any ideas ?
It's a mk1 gt if that makes any difference

 

[pilgrim_fgau]

fuse?

 

[weeJohn]

Have a look at page 14 of the PDF link in here Mark,

http://www.toyotagtturbo.com/wiki/EP82wiring/EP82 Starlet Wiring and Connectors.pdf

 

[dac69er]

if the car runs ok it will be the wire from the ecu/map sensor to the instruments. or the cluster itself could have a fault of course.